Travelers queue up move through the north security checkpoint in the main terminal of Denver International Airport, Thursday, May 26, 2022, in Denver. Airline travelers are not only facing sticker shock this Memorial Day weekend, the kick off to the summer travel season, but they're also battling a pileup of flight cancellations. More than 1,000 flights were canceled as of Saturday afternoon, May 28, according to flight tracking website FlightAware, after 2,300 cancellations on Friday. (AP Photo/David Zalubowski, File)