Cheap flights from District of Columbia to Denver from $122

The cheapest month to fly to Denver from District of Columbia is in January. Flight prices, which tend to average around $251, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in January, then you should wait until February to fly from District of Columbia, when ticket prices are also cheap, with an average price of $259.

The cheapest day to depart on your flight to Denver is on a Saturday when prices can be found for as low as $371. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $465.

The cheapest time of day to fly to Denver is at noon when flights can be purchased for as low as $343. Flights in the evening are often more expensive with an average ticket price of $443.

Fly from Washington, D.C. Reagan-National to Denver Intl for the best District of Columbia - Denver Intl flight prices

You are more likely to see cheaper flights to Denver from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $427 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from District of Columbia for as low as $375 on momondo.

There are 4 cabin classes available to choose from on District of Columbia to Denver flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest, United Airlines, and Alaska Airlines are the most popular carriers operating from District of Columbia to Denver Intl

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Denver from District of Columbia according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 6 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

The number of flights available between District of Columbia and Denver is 25 per day as of September 2026. The most frequent departure time is 4:00PM, with 50% of daily flights leaving in the afternoon.

The number of flights available between District of Columbia and Denver is 179 per week as of September 2026. The most frequent departure day is Thu, with 20% of weekly flights leaving on this day.