More than half of flights were canceled at Washington, DC's Reagan National Airport on Monday, according to data from FlightAware, as Storm Blair brought snow and ice to a large part of the country.
The National Weather Service warned that the DC area could face between 5 and 10 inches of snow, with a winter storm warning in effect until 1 a.m. ET Tuesday.
FlightAware data showed that, as of 5 a.m. ET, 227 flights had been canceled at Reagan National Airport, equivalent to 57% of all flights scheduled there for Monday.
Nearby Baltimore/Washington International Thurgood Marshall Airport was also heavily affected. A total of 106 flights, or 38% of those scheduled Monday, were canceled, per FlightAware.
Around a quarter of Monday's flights were canceled at Washington Dulles International Airpor, the data showed.
In Cincinnati, where the National Weather Service predicts up to four inches of snow, one-third of Monday's scheduled flights were canceled, the data showed.
Heavy snowfall was also seen in Kansas City, Missouri, where local media reported 10 inches of snow Sunday night. According to FlightAware, 94% of flights were canceled there on Sunday.
Airports in Indianapolis and Kentucky also saw rates of cancellation above 20%.