With ice on the runways in Dallas and a blizzard expected in Chicago, U.S. airlines are canceling thousands of flights and erasing much of their service in the middle of the country.
Flight tracking service FlightAware has logged almost 6,000 cancellations for the day. More are expected on Wednesday.
Ice shut down Dallas-Fort Worth International Airport for two hours on Tuesday morning. One runway later re-opened. But American Airlines spokesman Tim Smith says the airline is hardly operating at Dallas because high winds make it unsafe for de-icing employees to work in the bucket trucks.
Chicago O'Hare was seeing delays of more than two hours. A United Airlines spokeswoman says about 300 departures will be canceled in Chicago starting in the afternoon, when the snow is expected to pick up.
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