Huntsville International Airport remains open as a winter storm moves through north Alabama, though numerous flights have been canceled or delayed.

Up to 5 inches of snow fell in parts of the state overnight Thursday and into Friday morning, AL.com reported.

The widespread winter storm is disrupting airlines across much of the Southeast, with over 2,400 delays reported late Friday morning, according to FlightAware. All flights inbound to Atlanta’s Hartsfield-Jackson International Airport – the world’s busiest — were being held at their origin through Friday afternoon.

At HSV, runways and ramps were pre-treated before the storm, and staff are working to keep roadways and parking lots cleared for vehicle and pedestrian traffic, a spokeswoman said in an emailed statement.

As of late Friday morning, at least 12 scheduled departures from Huntsville had been canceled, four were delayed and 21 had either departed or were on schedule, according to the airport’s website. Eleven scheduled arrivals had been canceled, three had been delayed and 21 were set to arrive as planned.

The airport is “encouraging our passengers to stay in touch with their airline for information about flight delays and cancellations by downloading their airline app and opting in for email correspondence from their airline,” Public Relations Director Mary Swanstrom said.