OMAHA, Neb. (AP) — The winter storm has forced airlines to cancel some flights in Nebraska and Iowa, but the airports are operating normally despite the snow.

The main problem area Sunday for airports in Omaha, Lincoln and Des Moines was flights headed to and from Chicago. Most of the cancellations involved one of Chicago’s two major airports.

Eppley Airfield spokesman Tim Schmitt says about 20 flights to and from Omaha were cancelled because of the storm. But the airport had two runways clear and planes were landing without problems.

Lincoln airport officials said there had only been a couple cancellations Sunday.

Des Moines International Airport spokesman Andrew Wall says a few flights were cancelled Sunday, but those were mostly the ones that go back and forth to Chicago all day.