DENVER (CBS4) – United, Delta, Frontier, Jet Blue and Southwest announced they are offering travel waivers for travelers at Denver International Airport ahead of Monday’s storm.

“If you’re traveling 11/26, you can change your flight at no cost on our mobile app, by direct messaging us here or calling Reservations at 1-800-864-8331,” United Airlines said on social media.

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Travelers flying Southwest on Monday or Tuesday can re-book their flight.

Delta customers flying on Tuesday can re-book no later than Nov. 29 and avoid fees.

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Frontier customers traveling to/from Denver or Colorado Springs on Tuesday can change their flight without fees.

Customer using Jet Blue on Monday or Tuesday in Denver can change their flights through Friday.

The National Weather Service in Boulder says widespread, heavy snow will significantly impact travel Monday night into Tuesday. They say travel could be “potentially impossible.”

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“Plan ahead. If you have travel plans, consider an alternate time to travel. If you
must travel, plan on very slow and potentially dangerous conditions. Expect that
a few road routes may be closed due to wintry conditions,” NWS officials said on Sunday.