Southwest cancels all Midway flights after 4:30 p.m.

December 20, 2012 (CHICAGO)

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ABC7 meteorologist Tracy Butler said snow will start falling near Rockford and DeKalb between noon and 3 p.m. She added Chicago city snow could begin between 5-7 p.m.

Due to low visibility in the Chicago area, airlines at O'Hare International Airport are reporting delays of 20 minutes or more for in/outbound flights. Some flights to regional destinations are delayed more than two hours. Airlines have canceled more than 150 flights primarily due to weather.

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