Storm adds uncertainty to strong holiday travel demand


              Cars line up to pick up travelers at Love Field Airport in Dallas, Wednesday, Dec. 21, 2022. (AP Photo/LM Otero)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              Cars line up to pick up travelers at Love Field Airport in Dallas, Wednesday, Dec. 21, 2022. (AP Photo/LM Otero)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              Cars line up to pick up travelers at Love Field Airport in Dallas, Wednesday, Dec. 21, 2022. (AP Photo/LM Otero)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              Cars line up to pick up travelers at Love Field Airport in Dallas, Wednesday, Dec. 21, 2022. (AP Photo/LM Otero)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              Cars line up to pick up travelers at Love Field Airport in Dallas, Wednesday, Dec. 21, 2022. (AP Photo/LM Otero)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              Cars line up to pick up travelers at Love Field Airport in Dallas, Wednesday, Dec. 21, 2022. (AP Photo/LM Otero)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              Cars line up to pick up travelers at Love Field Airport in Dallas, Wednesday, Dec. 21, 2022. (AP Photo/LM Otero)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              Cars line up to pick up travelers at Love Field Airport in Dallas, Wednesday, Dec. 21, 2022. (AP Photo/LM Otero)
            
              A travel moves through 30th Street Station in Philadelphia, Wednesday, Dec. 21, 2022. (AP Photo/Matt Rourke)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers walk through the snow into Terminal 1 Wednesday, Dec. 21, 2022 at the Minneapolis-Saint Paul International Airport in Minneapolis.  (Alex Kormann /Star Tribune via AP)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks and wait in line to check luggage in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers check in for their flights at kiosks in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Travelers wait in line to go through security in Terminal 1 at Minneapolis St. Paul Airport, Wednesday, Dec. 21, 2022, in Minneapolis. (AP Photo/Abbie Parr)
            
              Passengers arriving at Chicago's Midway Airport wait for their luggage just days before a major winter storm Tuesday, Dec. 20, 2022, in Chicago. (AP Photo/Charles Rex Arbogast)
            
              Southwest Airlines ticketing agent Karen, helps a departing family at Chicago's Midway Airport just days before a major winter storm Tuesday, Dec. 20, 2022, in Chicago. (AP Photo/Charles Rex Arbogast)
            
              Wimberly Hoogendoorn from Houston, Texas, gathers her luggage at Chicago's Midway Airport for a family holiday visit just days before a major winter storm Tuesday, Dec. 20, 2022, in Chicago. (AP Photo/Charles Rex Arbogast)
            
              A traveler walks in Terminal 3 at O'Hare International Airport in Chicago, Monday, Dec. 19, 2022. (AP Photo/Nam Y. Huh)
            
              Rome DeGuzman sits on the floor of a terminal next to his two sons after missing a morning flight to Hawaii as travelers wait in line outside the building to check in at the Los Angeles International Airport in Los Angeles, Monday, Dec. 19, 2022. Forecasters are warning of treacherous holiday travel and life-threatening cold for big parts of the nation. (AP Photo/Jae C. Hong)
            
              Travelers are dropped off at the Los Angeles International Airport in Los Angeles, Monday, Dec. 19, 2022. Forecasters are warning of treacherous holiday travel and life-threatening cold for big parts of the nation. (AP Photo/Jae C. Hong)
            
              People wait in line to check in at Los Angeles International Airport in Los Angeles, Monday, Dec. 19, 2022. (AP Photo/Jae C. Hong)
            
              A TSA worker checks the identification of an airline passenger at O'Hare International airport in Chicago, Monday, Dec. 19, 2022. (AP Photo/Nam Y. Huh)
            
              Two people hug outside a terminal as travelers wait in line to check in at Los Angeles International Airport in Los Angeles, Monday, Dec. 19, 2022. (AP Photo/Jae C. Hong)