Frontier is having a 3-day airfare sale from Denver to over 50 cities. Purchase tickets by Wednesday, May 13th. Ten day advance purchase required and complete travel by November 4, 2009. Off-peak travel days: For US, Tuesday, Wednesday and Saturday; For Costa Rica, Monday through Thursday.

Here are some of the cities on sale for one-way economy class tickets from Denver:

  • Albuquerque $39
  • Austin $69
  • Chicago Midway $89
  • Indianapolis $54
  • Las Vegas $69
  • Nashville $79
  • Phoenix $59
  • Portland $69
  • Salt Lake City $49
  • Seattle $69
  • Tucson $59
  • San Jose, Costa Rica $139
All products and services mentioned on Airfarewatchdog are independently selected by our team of expert travelers. If you buy something through our links, we may earn an affiliate commission.

More Stories You'll Love