The latest Two-Day Sale on Frontier Airlines is valid for spring travel between April 14 and May 20, 2015.  Travel for this sale is valid Tuesdays, Wednesdays, and Saturdays, however, some routes are not flown on a daily basis. Some routes are also seasonal so be sure to check out our fare details for more information. This sale ends at 11:59pm Eastern Time on March 25, 2015.

Sample fares include:

Austin to Las Vegas $138 round-trip, nonstop

Bismark to Denver $58 round-trip, nonstop

Washington D.C. to Chicago $58 round-trip, nonstop

Austin to Chicago $58 round-trip, nonstop

Phoenix to San Francisco $98 round-trip, nonstop

Cincinnati to Fort Myers $58 round-trip, nonstop

Charlotte to Trenton $57 round-trip, nonstop

Denver to Salt Lake City $58 round-trip, nonstop

Detroit to Washington D.C. $58 round-trip, nonstop

Raleigh to Chicago $78 round-trip, nonstop

Atlanta to New Orleans $78 round-trip, nonstop

Minneapolis to Washington D.C. $98 round-trip, nonstop

Chicago to San Francisco $158 round-trip, nonstop

Cleveland to Las Vegas $158 round-trip, nonstop

New York to Denver $158 round-trip, nonstop

Frontier image via Shutterstock