More than 600 flights have been cancelled at Chicago’s airports on Monday, as heavy snow blankets the city.
As of 6:20 a.m., 412 flights had been cancelled at O’Hare International Airport, according to the Chicago Department of Aviation. Delays were averaging 16 minutes.
At Midway International Airport, 195 flights had been cancelled as of 6:20 a.m., and delays were averaging less than 15 minutes.
Snow began falling late Sunday night, and is expected to continue through the morning. According to the National Weather Service, heavy snow should end by about 11 a.m. for Chicago, although occasional light snow will be seen after that.
A winter weather advisory is in effect until 6 p.m., with 3 to 6 inches of accumulation likely for Chicago. The northern suburbs could get up to 8 inches, and areas south of the city could get 1 to 3 inches.
This article originally appeared on CBS News.