More than 4K Chicago flights cancelled since Tuesday
More than 4,000 flights have been canceled at Chicago's two international airports amid a deep freeze that brought record cold temperatures to Illinois.
Flight tracking website, FlightAware, says close to 3,300 flights in and out of O'Hare Airport and more than 850 at Midway Airport were canceled between Tuesday morning and Thursday afternoon. That's more than half of the scheduled flights for Wednesday and Thursday.
Joseph Schwieterman is a transportation professor at DePaul University in Chicago. Schwieterman says operations should be back to normal by midday Saturday unless snow forecast for Thursday night complicates matters further.