Cheap flights from Denver to Washington, D.C. from $55
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Washington, D.C. departing on 9/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Frontier flights from Denver to Washington, D.C.
Our best Frontier deals on Denver to Washington, D.C. flight tickets
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How to get the cheapest flight ticket from Denver to Washington, D.C.
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Washington, D.C.?
The month of September is, on average, the cheapest month to fly to Washington, D.C. from Denver, with most prices found around $221. If you’re not able to fly to Washington, D.C. in September, then August is your next best option. Flight prices from Denver to Washington, D.C. during August average around $231.
What is the cheapest day to depart on your flight to Washington, D.C.?
On average, the least expensive day to fly to Washington, D.C. from Denver is on a Friday. momondo users have found tickets for Friday departures for as low as $324. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Denver to Washington, D.C. for around $430.
What is the cheapest time of day to depart on your flight to Washington, D.C.?
In the morning is the cheapest time of day to fly from Denver to Washington, D.C. when you can find flight prices for as low as $312. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $614. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest Denver Intl to Washington, D.C. flight route?
Fly from Denver Intl to Washington, D.C. Reagan-National for the best Denver Intl - Washington, D.C. flight prices
How far in advance should I book a flight to Washington, D.C.?
You are more likely to see cheaper flights to Washington, D.C. from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $338 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Denver for as low as $265 on momondo.
What cabin class options are available on Denver Intl to Washington, D.C. flights?
There are 4 cabin classes available to choose from on Denver Intl to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Denver to Washington, D.C. flights?
No. A direct flight is the cheapest option for a flight between Denver to Washington, D.C..
How have Denver to Washington, D.C. flight prices changed over time?
As of June 2025, prices for Denver to Washington, D.C. flights are approximately 1% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Denver Intl to Washington, D.C.?
Frontier is the most popular carrier operating from Denver Intl to Washington, D.C.
What airlines fly to Washington, D.C.?
Frontier, United Airlines and Southwest are the top three most popular airlines that fly to Washington, D.C. from Denver according to our data. Frontier is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.
How many flights depart from Denver to Washington, D.C. on average per day?
As of June 2025, 44 flights take off from Denver and land in Washington, D.C. each day. The most common flight departure time for this route is 10:00AM, with 47% of daily flights taking off at noon.
How many flights depart from Denver to Washington, D.C. on average per week?
311 flights are operational weekly from Denver to Washington, D.C. as of June 2025. The most popular departure day for this route is Fri, with 18% of flights per week taking off on this day.
When to book flights from Denver to Washington, D.C.
Cheap Denver to Washington, D.C. (DEN to WAS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Denver to Washington, D.C.
Best Price Found | $55 |
|---|---|
Fastest flight time | 3h 15m |
Direct flights | Mon, Tue, Thu, Fri, Sat and Sun |
Airports in Washington, D.C. | 3 airports |
How far is Denver Intl to Washington, D.C. by plane?
Denver Intl and Washington, D.C. are 1487.9 mi apart from one another. By plane, this route typically takes 3h 25m.
When did momondo last update prices for flights from Denver Intl Airport to Washington, D.C.?
Prices for flights from Denver Intl Airport to Washington, D.C. are refreshed on a daily basis.
How many operators does momondo search for flights from Denver Intl Airport to Washington, D.C.?
There are 5 operators available for flights from Denver Intl Airport to Washington, D.C. as of June 2025.
How old do you have to be to fly from Denver Intl Airport to Washington, D.C.?
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 to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Denver to Washington, D.C.?
momondo data reveals that the most frequently booked plane model on the route from Denver to Washington, D.C. is Boeing 737 MAX 8, representing 14.18% of all bookings. The subsequent popular models are Airbus A320neo at 12.13%, Boeing 737-900 at 11.99%, and Airbus A321neo at 10.73%.
What is the most popular airline from Denver to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Denver to Washington, D.C. is Frontier (65% of total bookings). The next most popular airlines are United Airlines (26%), Southwest (9%), and American Airlines (0%).
Best airlines flying from Denver to Washington, D.C.
Compare and see reviews for airlines that fly from Denver to Washington, D.C. with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $97 | Free Cancellation | Rating 5.9 3,293 reviews | |||
| PriceFrom $148 | Free Cancellation | Rating 8.0 7,969 reviews | |||
| PriceFrom $166 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $173 | Free Cancellation | Rating 7.4 8,852 reviews | |||
| PriceFrom $215 | Free Cancellation | Rating 8.0 4,278 reviews |
Southwest Flights From Denver to Washington, D.C.
Southwest flight deals from Denver to Washington, D.C. start from $215 round-trip. Over the 17 Southwest flights for this route in a normal week, average airfare is usually $349 round-trip - but some users have found much cheaper deals with momondo.
United Airlines Flights From Denver to Washington, D.C.
The best United Airlines deal for Denver to Washington, D.C. flight tickets found on momondo in the last 72 hours was $173, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $379 round-trip. United Airlines operates 91 flights out of Denver into Washington, D.C. in an average week, so prices vary by time and availability. 8,852 United Airlines reviews by users on momondo have scored the airline at 7.4/10.
Traveling to a place near Washington, D.C.?
Book flights to Washington, D.C. if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Denver to Washington, D.C.?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Denver to Washington, D.C.. momondo saves you time and could save you money on your trip.
Can I find flights from Denver to Washington, D.C. with flexible booking policies on momondo?
Flights from Denver to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Denver to Washington, D.C.?
Once you have performed a search for Denver to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Denver to Washington, D.C. right now. Can momondo alert me if prices change?
Price alerts on flights to Washington, D.C. from Denver are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.