ID=5781515(WBIR) Frontier Airlines' non-stop flights from Knoxville to Chicago-Midway Airport start Tuesday.

The low-cost carrier announced the new flight in February. Chicago is part of Frontier's seasonal service for the area and will continue that flight through Sept. 30, 2014.

The airline also offers non-stop flights to Denver from McGhee Tyson Airport during the summer months but stops in the winter because of the low demand, according to Frontier's website.