Severe weather is affecting itineraries in Denver, Minneapolis and elsewhere

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More than 1,100 flights in and out of U.S. airports have been canceled Wednesday.

Photo: Lola Gomez/Associated Press

Severe winter storms are hitting the western part of the U.S. and heading eastward, causing power outages and many airline cancellations.

More than 1,100 flights in and out of U.S. airports have been canceled Wednesday, according to data from flight-tracking site FlightAware. Southwest Airlines Co. , Delta Air Lines Inc. and SkyWest Inc. have all cancelled more than 200 flights each. So far, Denver International and Minneapolis/St. Paul International are the most affected airports.

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