CHICAGO (AP) — Airlines have canceled more than 425 flights at Chicago airports as a snow storm sweeps across the region.

The Chicago Department of Aviation said Thursday afternoon that more than 325 flights were canceled at O’Hare International Airport and delays to and from the East Coast averaged 20 minutes. Southwest Airlines has canceled all flights in and out of Midway International Airport, totaling more than 100 flights or 25 percent of the airport’s flights.

The National Weather Service in northern Illinois predicts between 6 and 8 inches of snow in Chicago and Joliet and 4 to 6 inches in Rockford, Dixon, LaSalle and Pontiac. Between 2 and 5 inches of snow are forecast in central Illinois.

Ice and snow covered roads were reported around Freeport, the Quad Cities, Bloomington and Jacksonville.

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