CHICAGO — The Federal Aviation Administration has halted all flights in and out of Chicago's O'Hare Airport — one of the nation's busiest — due to a sprawling winter storm.
The alert on the agency's website said the stop would last at least through 9 p.m. CST.
Hundreds of flights already were canceled Friday at the airport, as the winter storm hit the city during the evening commute, creating a sloppy rush hour.
The airport tweeted that more than 690 flights had been canceled.
Earlier in the day, a plane slid off an icy taxiway in Kansas City.
The National Weather Service says the winter storm will create hazardous travel conditions from the Plains into the Northeast through the weekend.