Cheap flights from Denver from $41

Our data suggests that currently, the cheapest flights from Denver are being offered by Frontier, Allegiant Air, and Air Canada. For example, Frontier flights from Denver to Tulsa, start at $30, Allegiant Air flights from Denver to Idaho Falls cost around $40, and Air Canada flights from Denver to Tokyo Narita Airport are around $46.

Currently, the cheapest flight from Denver found by our users is for $29 to San Antonio. Prices will vary according to several factors such as the departure date and time, but on average you can expect to pay around $370 to travel from Denver to San Antonio.

Los Angeles, Chicago and San Francisco are currently the destinations served most frequently from Denver, with 75, 42 and 41 flights per day on average, respectively.

Airlines including American Airlines, United Airlines and Lufthansa frequently fly from Denver. You can view other airlines by performing a quick search in the form above.

If you are looking for a cheap first class flight, consider flights to Gunnison, for which the starting price of a first class seat can be as low as $349.

Prices for flights from Denver Intl Airport are updated daily.

There are 67 operators available for flights from Denver Intl Airport as of January 2026.

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport.

The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.