Travelers self-check at Delta Airlines counter at Los Angeles International Airport in Los Angeles, Wednesday, Nov. 27, 2024. (AP Photo/Damian Dovarganes)

As traffic passes by in the foreground, a United Airlines jetliner turns on the tarmac to leave the A Concourse and head to a runway at Denver International Airport Tuesday, Nov. 26, 2024, in Denver. (AP Photo/David Zalubowski)