Cirium: Sunday Snowstorm Cancellations Hit 34.7%

‍LONDON — Aviation analytics company Cirium's latest data puts U.S. flight cancellations at 34.68% on Sunday morning as Winter Storm Fern continues to disrupt hubs from Charlotte to Washington.

We don't usually cover lesser weather-related flight disruptions, but this storm is driving the biggest U.S. cancellation spike since the pandemic, with the East Coast and American (AA)/JetBlue (B6) networks taking the sharpest hit.

Flight Disruptions in Numbers

Cirium’s 9:00 a.m. ET update on Sunday, Jan. 25, 2026, tracked widespread disruption across U.S. domestic and international schedules, with 8,231 cancellations out of 23,735 scheduled departures (34.68%). International arrivals into the U.S. also took a hit, with 720 cancellations out of 2,283 scheduled flights (31.54%).

Impacts concentrated across the Mid-Atlantic and Northeast and feeding into nationwide connections as the Winter Storm Fern pressured airfield/ATC flow and airline recovery capacity, triggering preemptive cancellations that ripple through hub banks.

Early Sunday figures showed some of the most severe cancellation rates at PHL (94.03%), DCA (91.02%), LGA (83.44%), EWR (81.69%), and CLT (81.68%), while large hubs like ATL (44.89%) and DFW (44.88%) also posted heavy disruption.

By airline for Sunday, Jan. 25, Cirium’s snapshot showed the steepest cancellations among major carriers at JetBlue (72.02%) and American (55.63%), with elevated disruption for Delta (43.38%) and United (37.71%).

Cirium’s forward look for Monday, Jan. 26, suggested a sharp normalization trend, with single-digit cancellation rates for most majors in the early schedule.