Southwest Airlines and American Airlines canceled dozens of flights Monday in north Texas, which is expected to get cold, wet weather most of the week, including a chance of freezing rain.

About 30% of all flights at Dallas Love Field Airport, home to Southwest, were canceled by early afternoon, according to tracking service FlightAware. At nearby Dallas Fort Worth International Airport, which is dominated by American, nearly 15% of flights had been scrubbed.

Dozens more flights were canceled in Denver and in Austin, Texas. Nearly 800 flights had been canceled nationwide and more than 2,000 others delayed.

SOUTHWEST AIRLINES FLIGHT DIVERTED TO MILWAUKEE DUE TO 'POTENTIAL MECHANICAL ISSUE' AMID CANCELLATION CHAOS

FILE - In this file photo taken May 16, 2008, Southwest Airlines jets are seen parked at their gates at Baltimore Washington International Airport in Baltimore. United and Continental will help Southwest Airlines Co. expand in the New York market to help clear a path to their own combination, which would create the world's biggest airline. United and Continental said Friday, Aug. 27, 2010, they would lease takeoff and landing slots at Newark (N.J.) Liberty International Airport to Southwest beginning next March. (AP Photo/Charles Dharapak, file)

Southwest and American Airlines have cancelled dozens of northern Texas-bound flights, anticipating wintry conditions for most of the week. (AP Photo/Charles Dharapak, file)

Southwest scrubbed more than 330 flights, or about 8% of its entire schedule, while American had dropped nearly 180 flights, 5% of its schedule, according to FlightAware.

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The National Weather Service issued the winter storm warning for parts of north Texas starting on Monday afternoon.

High temperatures are expected to stay in the 30s until Thursday.

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Beyond Texas, forecasters said ice could accumulate in neighboring Oklahoma and Arkansas and stretch east into the Deep South and Midwest this week.