Cheap flights from Denver to District of Columbia from $120

In general, February is the cheapest month to fly from Denver to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $238. If you don’t want to visit District of Columbia in February, then you should wait until January to fly from Denver, when ticket prices are also cheap, with an average price of $254.

The cheapest day to depart on your flight to District of Columbia is on a Thursday when prices can be found for as low as $374. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Denver because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $588.

Flying to District of Columbia from Denver in the morning is the least expensive time of day to depart. momondo users have found prices as low as $412 when looking at flights departing in the morning. Flights to District of Columbia are more costly in the evening, with an average ticket price of $798. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to District of Columbia from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $437 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Denver for as low as $357 on momondo.

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

Frontier is the most popular carrier operating from Denver Intl to District of Columbia

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to District of Columbia from Denver according to our data. Frontier is the first choice among our users, with 43% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 6 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

The number of flights available between Denver and District of Columbia is 16 per day as of September 2026. The most frequent departure time is 8:00AM, with 51% of daily flights leaving at noon.

As of September 2026, 113 flights take off from Denver and land in District of Columbia each week. The most common flight departure day for this route is Mon, with 26% of weekly flights taking off on this day.