Dec. 29 (UPI) -- A winter storm is hitting the Midwest with strong winds, snow, ice and canceled flights expected.

A winter rainstorm is happening in the northeast and the south. In Massachusetts and Maine, that rain could turn to freezing rain.

As of 3 p.m. EST Monday, about 1,231 flights had been canceled in the United States, and more than 23,393 others were delayed, according to FlightAware.

Delta Air Lines showed the highest number of affected flights, with 3% (128 flights) canceled, and 15% (507) flights delayed.

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