More than 1,000 flights were canceled at Chicago's O'Hare airport Sunday as a winter storm swept through the Midwest on its way east, threatening to bring more snow to parts of Ohio, NBC News reported.
The Chicago Department of Aviation said on its website just after midnight Sunday that 955 flights were canceled — about half arrivals and half departures.
The smaller Midway airport announced earlier Saturday afternoon that all Southwest flights would be canceled into Sunday morning due to the winter storm.
Chicago could see a total of 7 to 12 inches of snow, the National Weather Service said. The region was under a winter storm warning through Sunday night.