A Delta Air Lines Connection airplane arrives at a gate at Hartsfield-Jackson Atlanta International Airport (ATL) in Atlanta, Georgia, U.S., on Monday, Dec. 27, 2021. Flight cancellations that disrupted U.S. travel over the Christmas weekend stretched into Monday, with winter storms further pressuring carriers that were already short-staffed because of spreading Covid-19 cases. Photographer: Elijah Nouvelage/Bloomberg