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DENVER — Dozens of flights to and from Denver International Airport were delayed or canceled because of the winter storm hitting Colorado on Wednesday.

At 3 p.m., the airport was experiencing average departure delays of about 30 minutes, according to FlightAware.

Southwest, Delta, United, Lufthansa, Alaska Airlines and several smaller carriers were reporting delays for flights departing Wednesday afternoon and evening.

Frontier and United have canceled multiple flights departing from Denver on Wednesday afternoon and evening.

RELATED: Flight status at DIA

On Wednesday morning, Frontier Airlines proactively canceled nearly two dozen flights for Wednesday and Thursday.

Other airlines, including United, GoJet, SkyWest and Virgin American, began to cancel flights as the storm neared.

The cancellations are expected to increase as the snow moves into the area.

Airport officials said some airlines, including United, Delta and Southwest, are offering change-fee waivers.

As for arrivals, United, Southwest, Frontier, Air Canada, Lufthansa, American, Qantas, British Airways and several other carriers are anticipating delays.

United has canceled several flights scheduled to arrive in Denver on Wednesday afternoon and evening.