"Massive Winter Storm Causes Over 4,000 Flight Cancellations Across U.S."

Over 1,600 flights were canceled in the United States due to a massive winter storm affecting 12 states, with delays and cancellations expected to continue. Airlines like Delta and Southwest are anticipating operational challenges, while the FAA warned of potential flight delays due to weather conditions. Southwest Airlines led the list of cancellations, followed by SkyWest and United, with some cancellations extending to Saturday as airlines await regulatory approval to resume operating Boeing's 737 MAX 9 jets.