Ending today, Frontier Airlines offers select 1-way fares on select routes with prices starting at $34.49. (Click on "Frontier Airlines in the top line to see this sale.) That's the lowest price we could find for select routes by $33. This price is valid on flights departing from Omaha, NE, (OMA) with arrival in Denver, CO, (DEN) on December 9; prices vary depending on the departure cities and dates chosen. Book this travel deal today for travel on select dates from October 28 through December 17. Click here to see more routes.