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The bone-chilling cold sweeping across much of the U.S. seems to be having a minimal effect on flights out of Salt Lake City.

"Salt Lake International Airport isn't seeing major impacts from the winter weather," said spokeswoman Barbara Gann. She cautioned that there will be isolated cases of people waiting for a flight, so passengers should check with their airline regarding their flight status, particularly if they are flying to Chicago or farther east.

As of about noon Monday, the delays at the airport were generally no more than 15 minutes, according to the Federal Aviation Administration.

Frigid, dense air swirled across much of the country on Monday, with wind chill warnings stretching from Montana to Alabama. For a big chunk of the Midwest, the subzero temperatures moved in behind another winter wallop: more than a foot of snow and high winds that made traveling treacherous.

More than 3,000 flights across the airline industry were cancelled Monday, according to JetBlue, which accounts for roughly 10 percent of them. The company reduced its operations at John F. Kennedy International Airport, LaGuardia Airport, Newark Liberty International Airport and Logan International Airport in Boston through 10 a.m. Tuesday.

It hasn't been this cold for almost two decades in many parts of the country. The National Weather Service said the temperature sank to 16 degrees below zero at Chicago's O'Hare International Airport, two degrees lower than the record for Jan. 6. Weekend snowfall at the airport totaled more than 11 inches — the most since a February 2011 storm shut down the city's famed Lake Shore Drive.

The Associated Press contributed to this story.

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