A massive winter storm canceled more than 11,400 flights on Sunday as the system swept from the southern Rocky Mountains to New England, threatening nearly 180 million people and triggering widespread disruptions at the nation’s busiest airports. The worst impacts hit the Northeast, where major hubs including LaGuardia, Philadelphia, and Washington National were forced to ground aircraft. By Sunday afternoon, some airports were closed entirely, with cancellation rates exceeding 90 percent at major terminals.
The disruptions marked the highest cancellation event since the pandemic, according to aviation analytics firm Cirium. Recovery could take days or longer, with cascading delays affecting travelers far beyond the storm’s direct path, according to a Dartmouth professor specializing in commercial aviation.
Impact Across the National Air Network
The damage to the nation’s air transportation network was immediate and far-reaching. American Airlines canceled over 1,790 flights on Sunday, roughly 55 percent of the carrier’s scheduled departures. Delta Air Lines reported more than 1,470 cancellations, while Southwest Airlines reported over 1,340. United Airlines had about 1,016 canceled flights, and JetBlue reported more than 590 cancellations — accounting for roughly 72 percent of its daily schedule.
Disruptions at major airport hubs reached extreme levels. In Philadelphia, where 94 percent of 326 scheduled flights were canceled, the airport became a hub of stranded passengers. At LaGuardia, 91 percent of 436 flights were grounded. John F. Kennedy International Airport canceled 466 flights, about 80 percent of its daily operations. Ronald Reagan Washington National Airport canceled all departing flights for the day — approximately 421 flights — as operations halted entirely.
The Scope of the Storm
The winter system’s path spanned vast distances and affected millions. The National Weather Service reported that the storm threatened nearly 180 million people — more than half the U.S. population — in a stretch from the southern Rocky Mountains to New England. As it swept through the South, the system moved into the Northeast on Sunday, where it was expected to deposit between 1 and 2 feet of snow from Washington through New York and Boston.
The cancellations represented the highest disruption event in commercial aviation since the pandemic, according to Cirium, an aviation analytics firm.
Expert Perspective on Recovery
Vikrant Vaze, a Dartmouth professor specializing in commercial aviation logistics, cautioned that recovery from the disruptions would extend well beyond Sunday. “Because there are so many different airlines involved, I think it’s going to come down heavily to the individual airline’s network structure, the extent of hit that each of them has had, and just the intrinsic capacity of the airlines to handle these massive disruptions,” Vaze said.
The cascading effects of the disruptions would reach far beyond passengers directly stranded by the weather. “Even for travelers who aren’t in areas that were directly affected by weather, cascading delays could still affect their travel plans,” Vaze said.
Passenger Options and Stories
Passengers whose flights were canceled could pursue several paths. Most airlines rebooked passengers on later flights at no additional charge, though seat availability varied. Those who preferred a full refund had legal protections: federal law requires airlines to refund canceled passengers regardless of whether their tickets were purchased as refundable or non-refundable, including refunds of unused bag fees, seat upgrades, and other extras. Some major carriers also offered rebooking on partner or competing airlines, though airlines are not legally required to do so, and availability varied significantly.
For some travelers, the disruption brought unexpected benefit. Allan Lengel, a 71-year-old from Detroit, had planned to return Monday to Michigan from Fort Lauderdale, where the temperature had been in the 80s. After Delta suggested he change his travel date due to weather impacts, Lengel modified his reservation to Wednesday. “Can’t say I’m disappointed. Frankly, I had been thinking of returning later because of frigid weather,” Lengel said, referring to the conditions he faced back home.