WAS - DEN

£68 Find Cheap Flights from Washington, D.C. to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Denver departing on 6/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Denver, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Washington, D.C. to Denver (WAS-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Washington, D.C. to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Washington, D.C. to Denver

Sat, 6 Dec - Sat, 13 Dec
Southwest Logo
15:55 - 17:50IAD-DEN
3h 55mdirect
Southwest Logo
17:05 - 22:15DEN-IAD
3h 10mdirect
£135Southwest
Find Deal
Wed, 3 Dec - Mon, 8 Dec
United Airlines Logo
22:10 - 00:15IAD-DEN
4h 05mdirect
United Airlines Logo
23:59 - 05:16DEN-IAD
3h 17mdirect
£151United Airlines
Find Deal
Sat, 6 Dec - Tue, 9 Dec
Delta Logo
06:00 - 10:18IAD-DEN
6h 18m1 stop
Delta Logo
16:15 - 00:02DEN-IAD
5h 47m1 stop
£166Delta
Find Deal
Sat, 6 Dec - Fri, 12 Dec
Delta Logo
16:15 - 20:30DCA-DEN
6h 15m1 stop
Delta Logo
00:50 - 09:10DEN-DCA
6h 20m1 stop
£166Delta
Find Deal
Sat, 6 Dec - Sat, 13 Dec
Southwest Logo
05:00 - 13:55IAD-DEN
10h 55m1 stop
Southwest Logo
17:05 - 22:15DEN-IAD
3h 10mdirect
£168Southwest
Find Deal
Tue, 17 Feb - Sun, 22 Feb
United Airlines Logo
22:25 - 00:30IAD-DEN
4h 05mdirect
United Airlines Logo
23:59 - 05:18DEN-IAD
3h 19mdirect
£170United Airlines
Find Deal
Sun, 1 Feb - Thu, 5 Feb
Alaska Airlines Logo
17:09 - 10:53DCA-DEN
19h 44m1 stop
Alaska Airlines Logo
07:00 - 21:59DEN-DCA
12h 59m1 stop
£181Alaska Airlines
Find Deal
Thu, 4 Dec - Sun, 7 Dec
JetBlue Logo
15:40 - 22:59DCA-DEN
9h 19m1 stop
JetBlue Logo
23:59 - 10:05DEN-DCA
8h 06m1 stop
£197JetBlue
Find Deal
Sun, 7 Dec - Sun, 7 Dec
JetBlue Logo
06:00 - 11:05DCA-DEN
7h 05m1 stop
JetBlue Logo
23:59 - 11:45DEN-DCA
9h 46m1 stop
£204JetBlue
Find Deal
Fri, 16 Jan - Tue, 20 Jan
Alaska Airlines Logo
18:56 - 16:13DCA-DEN
23h 17m2 stops
Alaska Airlines Logo
11:49 - 16:01DEN-DCA
26h 12m1 stop
£207Alaska Airlines
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts
Frontier's Economy Bundle includes a carry-on and seat.
DCA's metro access offers quick downtown connections.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
United Airlines
Cheapest • from £135 (return)
Frontier
Best reviews • 5.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
DCA-DEN
Cheapest • 28% average savings
IAD-DEN
Most popular
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 14% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£135
Typical prices: £237-£416
Southwest
Sat 6/12Sat 13/12
IAD - DEN • Direct
Cheapest one-way flight
£68
Typical prices: £137-£288
United Airlines
Sat 6/12
IAD - DEN • Direct
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Denver flights

Get data-powered insights and trends into flights from Washington, D.C. to Denver to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Washington, D.C. to Denver?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Denver departing in February.

What is the cheapest Washington, D.C. to Denver flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Washington, D.C. to Denver costs £285 on the route between Washington, D.C. Reagan-National Airport (DCA) and Denver (DEN). Over the past month, this route was, on average, 28% cheaper than other Washington, D.C.-Denver routes. The most popular route is between Washington, D.C. Dulles Intl Airport (IAD) and Denver (DEN).

What is the cheapest month to fly from Washington, D.C. to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Denver is August, where tickets cost £185 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is £262 and £244 respectively.

How far in advance should I book a flight from Washington, D.C. to Denver?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. to Denver, you should book around 3 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Expert advice

Expert advice for your flight from Washington, D.C. to Denver

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Southwest

Southwest offers free carry-on and personal item, but checked bags now incur fees.


Southwest's cancellation policy allows changes up to 10 minutes before departure with travel credit or refund.

Read more about Southwestby Blane Bachelor
United Airlines

United's Economy Plus offers up to six inches more legroom, enhancing comfort on medium-haul flights.


United provides Wi-Fi on most flights; check coverage map for quality before purchasing.

Frontier

Frontier's Economy Bundle includes a carry-on and seat choice, ideal for budget-conscious travelers.


Choose the Premium Bundle for extra legroom and priority boarding, just $20 more than Economy.

Read more about Frontierby Stefanie Waldek
Airports
DCA

DCA's metro access makes it easy to reach from downtown D.C. in under 30 minutes, perfect for quick trips and avoiding traffic.

Read more about DCAby Ramsey Qubein
IAD

Dulles offers a convenient Silver Line Metro connection to downtown D.C., taking about 50 minutes. Ideal for avoiding traffic and high taxi fares.

Read more about IADby Stefanie Waldek
DEN

Use the RTD A line train for a cost-effective 40-minute ride from DEN to downtown Denver, with easy access to city attractions.

Read more about DENby Harriet Baskas
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specialising in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favourite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, Frontier and IAD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on DCA

Ramsey Qubein

Ramsey Qubein

An avid traveller and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg, among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Harriet Baskas

Harriet Baskas

Expert on DEN

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, The Points Guy, and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Good to know - Cheap tickets from Washington, D.C. to Denver

Low seasonSeptember
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly and prices are also 7% lower on average.

When to book flights from Washington, D.C. to Denver

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Denver

  • What facilities does Dulles International Airport have for children and families?

    In addition to secure nursing rooms that are located in each Terminal and contain changing tables and rocking chairs, Dulles International Airport has a "Funway" children’s play area that is near Gate B70. This play zone contains interactive equipment, as well as a system with over 100 different games for all ages.

  • What is there to do while waiting for my flight at Baltimore/Washington International Thurgood Marshall Airport?

    If you enjoy working out, consider purchasing a $25 daily pass for the Technogym that is located in Concourse D of Baltimore/Washington International Thurgood Marshall Airport. To clear your head and enjoy some peace and quiet, go to the Meditation Room, which is found between Concourses D and E.

  • Is smoking prohibited at Denver International Airport?

    Although smoking is strictly prohibited inside of all terminals in Denver International Airport, there are some areas where you can have a cigarette outside of the Arrivals area. Before smoking, make sure that you are at least 20 ft away from each door, and look to see if there are any airport signs declaring it a smoke-free zone.

  • Where can I buy food at Denver International Airport?

    Boulder Beer Tap House can be found in the Jeppesen Terminal of Denver International Airport and serves an American-style menu, while there is a Caribou Coffee in each Terminal that specializes in breakfast and sweet treats. Denver Chophouse is a popular choice near the A Gates that has many healthy vegetarian and gluten-free options.

  • How can I get information at the Denver International Airport?

    While at Denver International Airport (DEN), you can seek information and assistance from an Ambassador Volunteer. Recognizing one is easy since they all adorn distinct blue plaid vests. Alternatively, you can seek information from one of the Airport Information Booths available on the Landside of the Jeppesen Terminal and Airside in the Center Cores of Gates A, B, and C.

  • Can I rent a car at Denver Airport (DEN)?

    You can rent a car at DEN, given that this airport has onsite locations for up to twelve car rental agencies, including Budget, Dollar, Enterprise, Payless, Thrifty, and SIXT. Each agency provides shuttle services from Jeppesen Terminal. The shuttles pick up passengers from Jeppesen Terminal Level 5, Island 4, outside doors 505-513 and 504-512.

  • Does Denver Airport have a prayer room?

    DEN has an Interfaith Chapel with an Islamic Prayer Hall as well as a Christian Prayer room. It’s in the Jeppesen Terminal on the East Side of Level 6. Since it is open 24 hours a day, you can visit no matter how late you land at the airport.

  • What are some of the attractions worth checking out at Baltimore/Washington International Airport?

    As you wait for your flight at BWI, you can learn about the exciting life of the first African-American Supreme Court Judge, Thurgood Marshall, at the tribute named after him near the Observation Gallery. Alternatively, you can check out the Benson-Hammond House, a Greek revival-style house at the edge of the airport property listed on the National Register of Historic Places.

  • Does Baltimore/Washington International Airport have a children’s play area?

    BWI has not one but two children’s play areas where you can let your children burn off their energy as you wait for your flight. One is near Gate D11, while the other is by the Observation Gallery just before the B/C security checkpoint.

  • Which airlines offering flights from Washington, D.C., to Denver are eco-friendly?

    Among the airlines that serve flights from Washington D.C. to Denver, Alaska Airlines, JetBlue, and Delta lead in eco-friendliness. This is because they boast low emission rates, efficient planes, and working waste recycling programs.

  • What is the cheapest flight from Washington, D.C. to Denver?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Denver was £68 for a one-way ticket and £135 for a return.

  • Which airlines offer Wi-Fi service onboard planes from Washington, D.C. to Denver?

    Alaska Airlines, and Hawaiian Airlines offer inflight Wi-Fi service on the Washington, D.C. to Denver flight route.

  • Which aircraft models fly most regularly from Washington, D.C. to Denver?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Washington, D.C. to Denver flight route.

  • On which days can I fly direct from Washington, D.C. to Denver?

    There are direct flights from Washington, D.C. to Denver on a daily basis.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Denver with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. to Denver

  • Looking for a cheap flight from Denver to Washington, D.C.? 25% of our users found flights on this route for £77 or less one-way.
  • When you are browsing through flights from Washington to Denver, first make sure to decide which airport you would like to depart from. While Baltimore/Washington International Thurgood Marshall Airport (BWI) is a convenient choice for those leaving from Maryland, Ronald Reagan Washington National Airport (DCA) and Dulles International Airport (IAD) are closer to downtown Washington, D.C.
  • For those who want to book nonstop flights from Washington to Denver, consider flying with Southwest Airlines, as they allow customers to check two suitcases for free. If you would prefer a more budget-friendly company, Spirit Airlines also operates flights between these two cities.
  • If you have some time to kill before you start boarding your plane, head to the Observation Area at Ronald Reagan Washington National Airport. Located on the Departures level between Terminals B and C, this area provides travelers with a direct view of the airport’s primary tarmac.
  • Need to take care of some last-minute work after your flight has landed? Drop by the business center that is near the B Gates of Denver International Airport (DEN). This center has copying machines, fax services, shipping supplies, and access to high-speed Internet, as well as public telephones.
  • To unwind after an intense day of travel, stop by A Massage in Denver International Airport for some quick relaxing service. Located near both the A Gates and B Gates, this massage parlor offers services at a variety of price points and durations, including express foot massages and full back massages.
  • If you’re flying from Dulles International Airport (IAD) with your pet, you can let it relieve itself, quench its thirst, and even play a bit at one of the airport’s pet relief areas as you wait for your flight. Landside, there’s one pet relief area near Door 16, another near Door 1, and a final one near the Baggage Claim in Arrivals Level. Airside, there’s one near Gate A32 and another by Gate D1.
  • In case you want to arrive at Ronald Reagan International Airport (DCA) with your car and leave it there till you return, you can do so without hassle given that at DCA’s Economy Lot, long-term parking is available. The parking spaces at this lot are usually in high demand. To guarantee your space and price, it’s in your best interest to reserve your parking spot.
  • If you’re an active USA military serviceman or a family member of one, you can relax at your preferred airport’s USO lounge. At DCA, the lounge is in Terminal A, Concourse Level, across from Lost and Found, while at IAD, the USO Lounge is on the Arrivals Level of the Main Terminal, opposite Baggage Claim 11. At Baltimore/Washington International Airport (BWI), it is on the Lower Level of the International Pier next to Baggage Claim 4.

Prefer to fly direct from Washington, D.C. to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. to Denver Intl.
Find which airlines fly direct from Washington, D.C. to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. to Denver Intl

Monday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Tuesday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Wednesday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Thursday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Friday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Saturday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Sunday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

See more direct flights

Direct returns

Denver Intl to Washington, D.C.

Monday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Tuesday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Wednesday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Thursday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Friday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Saturday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

Sunday

Frontier, Southwest, United Airlines

Frontier, Southwest, +1 more

See more direct flights

Reviews of the top airline flying from Washington, D.C. to Denver

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
5.8
FrontierOverall score based on 3115 reviews
6.0Boarding
5.5Comfort
4.4Entertainment
6.7Crew
4.6Food
Airline reviews

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

10.0 ExcellentGreg, Oct 2025PAE - DEN
Read more Frontier reviews

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

My tickets got canceled on me by your site and I didn't have a flight. Then you kept sending me emails on the status of q flight I didn't have tickets for.

Flight was late. Missed connecting in Denver. My new flight is more than 24 hours later and I have no room, vouchers, or compensation, and might also be bumped from the one tomorrow.

Everything you need to know for your flight from Washington, D.C. to Denver

Information on your arrival and departure airports

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