Cheap flights from Washington, D.C. to Colorado from $139

The month of February is, on average, the cheapest month to fly to Colorado from Washington, D.C., with most prices found around $285. The month of January is another great option to travel to Colorado, with average flight prices from Washington, D.C. averaging around $295.

The cheapest day to depart from Washington, D.C. to Colorado is on a Wednesday when prices can be found for as low as $480. On the other hand, Sunday is the most expensive day to depart from Washington, D.C. because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $602.

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $441. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $532 per ticket.

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

You are more likely to see cheaper flights to Colorado from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $445 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Washington, D.C. for as low as $401 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. to Colorado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Delta, and Southwest are the most popular carriers operating from Washington, D.C. to Colorado

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Colorado from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 6 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

24 flights are operational daily from Washington, D.C. to Colorado as of November 2026. The most popular departure time for this route is 5:00PM, with 45% of flights per day taking off in the afternoon.

The number of flights available between Washington, D.C. and Colorado is 170 per week as of November 2026. The most frequent departure day is Sat, with 18% of weekly flights leaving on this day.