United Airlines has been fined nearly three million dollars for holding passengers on tarmacs longer than the feds allow.

FOX's Jared Halpern has more from Washington:

Five United Airlines flights sat on the tarmac at Chicago's O'Hare Airport for more than three hours in 2013 and another at Houston's Hobby Airport last year.

Those delays will cost the carrier $750,000 in fines from the U.S. Transportation Department.

Federal rules say aircraft with more than 30 passenger seats can't sit on a tarmac for longer than three hours. The DOT blames United for poor gate management during severe winter weather.

The airline is also fined another $2-million by the Feds for violating the Air Carrier Access Act, requiring prompt and adequate assistance for passengers with disabilities.

In Washington, Jared Halpern, FOX News.