Cheap flights from Colorado to Washington, D.C. from $156

In general, January is the cheapest month to fly from Colorado to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $368. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $389.

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $545. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Colorado to Washington, D.C. Dulles Intl Airport for around $752.

Flying to Washington, D.C. Dulles Intl Airport from Colorado in the morning is the least expensive time of day to depart. momondo users have found prices as low as $595 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $904 on average. Flights to Washington, D.C. Dulles Intl Airport from Colorado in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Hayden Yampa Valley to Washington, D.C. Dulles Intl for the best Colorado - Washington, D.C. Dulles Intl flight prices

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $464 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Colorado for as low as $352 on momondo.

There are 4 cabin classes available to choose from on Colorado to Washington, D.C. Dulles Intl Airport 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 Alaska Airlines are the most popular carriers operating from Colorado to Washington, D.C. Dulles Intl

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Colorado according to our data. United Airlines is the first choice among our users, with 85% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

As of November 2026, 19 flights take off from Colorado and land in Washington, D.C. Dulles Intl Airport each day. The most common flight departure time for this route is 7:00AM, with 43% of daily flights taking off in the afternoon.

As of November 2026, 133 flights take off from Colorado and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Sun, with 18% of weekly flights taking off on this day.