Storms and icy weather caused hundreds of flight cancellations across the central U.S., snarling travel for thousands of passengers at airline hubs in Chicago, Dallas and Houston.

The tally of scrubbed U.S. flights stood at 900 at 10 a.m. New York time, industry data tracker FlightAware.com reported, with the prospect of rising later in the day. Monday’s forecast at Chicago’s O’Hare International Airport, a base for United Airlines and American Airlines, called for ice pellets, freezing rain and rain.

Cancellations topped 250 at O’Hare and 200 at Dallas-Fort Worth, the busiest outpost for American Airlines Group Inc.’s American, according to FlightAware. Also affected was Bush Intercontinental in Houston, a hub for United Continental Holdings Inc.’s United, and Chicago’s Midway, where Southwest Airlines Co. is the largest carrier.

Monday’s travel disruptions compounded the woe for U.S. fliers who suffered through almost 6,500 delays and more than 1,600 cancellations on Sunday, based on FlightAware data. Trade group Airlines for America had predicted the day would be the third-busiest of the Christmas-holiday season, behind Jan. 3 and Dec. 18.

Southwest and American both reported about 4 percent of Monday’s flights had been canceled, according to FlightAware, but the impact was greater for American. The total excluded trips scrapped by American’s regional partners such as subsidiary Envoy Air, which eliminated 12 percent of its daily schedule.

This article was written by Michael Sasso from Bloomberg and was legally licensed through the NewsCred publisher network.

Photo Credit: A screen displays flight status information at O'Hare International Airport, Saturday, Nov. 21, 2015, in Chicago. Associated Press