Frontier Airlines will end service to Grand Rapids airport in Michigan on 8 September, nixing its daily flight to Denver in Colorado roughly one month after Southwest Airlines begins flying on the same route.
Frontier, a subsidiary of Indianapolis, Indiana-based Republic Airways Holdings, only serves Grand Rapids with one daily flight from Denver.
The Denver-based airline launched the flight in mid-2010.
In 2012 the airline discontinued flights between Grand Rapids and Milwaukee in Wisconsin and Washington National Airport.
Frontier tells Flightglobal that the airline evaluated the performance of the service and determined that it could better use the aircraft on other routes.
In February, Southwest Airlines announced that it would begin flying once daily non-stop from Grand Rapids to Denver, starting 11 August.
United Airlines also flies non-stop between Grand Rapids and Denver.
In addition to its Denver flight, Southwest will begin service on 11 August from Grand Rapids to Orlando in Florida, Saint Louis in Missouri and Baltimore/Washington International in Maryland.
The expansion comes as Southwest takes over all service at Grand Rapids from its subsidiary AirTran Airways. The last AirTran flight at the airport will be 10 August.
AirTran currently flies nonstop from Grand Rapids to Baltimore/Washington and Orlando, Fort Myers and Tampa in Florida.