WICHITA, Kan. — Frontier Airlines plans to return to Wichita and offer new service to Denver. Related Articles Colorado Springs Airport cancels commercial flights after rooftop fire The airline will offer once-daily flights on Tuesday, Thursday and Sunday, beginning Aug. 30. The flights will use an Airbus A320 narrow-body aircraft, which carries about 180 passengers. Frontier previously offered service to Denver from Wichita, but left the city in 2012. Flights will depart Wichita at 6 p.m.