Frontier adds four new routes at Denver

Frontier used social media to build hype around its latest round of expansion at it's main hub in Denver (DEN).  The airline is adding four new routes from DEN.  Frontier let flyers guess the routes on their Facebook page before making a formal announcement on Monday.

To celebrate its 20th anniversary this summer, Frontier Airlines today announced that it is launching six new routes. Beginning May 16, 2014, Frontier will offer nonstop service from its primary hub in Denver, Colo. to Bakersfield, Calif. (BFL). Beginning June 12, 2014, Frontier will offer year-round nonstop service from Denver to Missoula, Mont. (MSO), Idaho Falls, Idaho (IDA), and Sioux City, Iowa (SUX), and seasonal service from Chicago-Midway, Ill. (MDW) to both Knoxville, Tenn. (TYS) and Harrisburg, Pa. (MDT).

The incredible introductory fares at the prices listed below are available at through Feb. 26, 2014. Visit for new ultra-low fares on other existing flights.