More than 1,000 flights in the US Midwest have been cancelled as a storm dumped up to 12 inches of snow across the region.

Chicago’s O’Hare airport saw six inches of snow by mid-afternoon yesterday and heavier accumulation was reported in Minnesota and Iowa.

Chicago airports have seen 1,100 flights cancelled, creating delays elsewhere in the country.

Washington DC is expected to see three to eight inches of snow, weather officials said.

Airlines along the storm’s projected path have already shut down about 450 flights for today, most of them at Washington DC area airports, the BBC reported.

The storm, which began in Montana before moving east, follows a series of heavy winter snowstorms that have dropped double-digit snowfalls in the Midwest.