Frontier Sale for travel through mid-January

Frontier's Whale of a Sale is good for Tuesday-Wednesday travel from August 10 through January 15. Fares require a 14-day advance purchase, and all bookings must be made by 9:59 pm MDT, July 14.

Fares include:

Albuquerque to Colorado Springs $148 round-trip

Aspen to St Louis $158 round-trip

Boise to Grand Junction $158 round-trip

Denver to Portland $118 round-trip

Los Angeles to Rapid City $178 round-trip

Rapid City to Tuscon $158 round-trip

Chicago to Durango $178 round-trip

Kansas City to San Diego $178 round-trip