DEN - DCA

$74 Find Cheap Flights from Denver to Reagan Washington National Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Reagan-National departing on 5/8. 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 Washington, D.C. Reagan-National Airport

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

Cheapest round-trip
$131
Overall average: $268
Frontier
Thu 4/23Mon 4/27
DEN - DCA • Non-stop
Cheapest one-way
$74
Typical prices: $117-$271
Frontier
Fri 5/8
DEN - DCA • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Use the West Security Checkpoint at DEN for speed.
DCA is easily accessible via the metro line.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with Frontier and United Airlines. Average duration is 3h 24m
Direct flights
Direct flights
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Direct flights
Direct flights
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When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
Good to know
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Reagan-National!
Flight Deals
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Flight Deals

Cheap Flights from Denver to Reagan-National (DEN-DCA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Reagan-National 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 round-trip flight deals from Denver to Reagan-National

Thu, Apr 23 - Mon, Apr 27
Frontier Logo
7:35 am - 1:00 pm
DEN
-
DCA
3h 25mnonstop
Frontier Logo
6:00 pm - 8:11 pm
DCA
-
DEN
4h 11mnonstop
$131Frontier
Thu, Apr 16 - Fri, Apr 17
Frontier Logo
7:35 am - 1:00 pm
DEN
-
DCA
3h 25mnonstop
Frontier Logo
1:59 pm - 4:04 pm
DCA
-
DEN
4h 05mnonstop
$132Frontier
Sun, May 10 - Wed, May 13
Frontier Logo
11:34 am - 4:59 pm
DEN
-
DCA
3h 25mnonstop
Frontier Logo
6:00 pm - 8:11 pm
DCA
-
DEN
4h 11mnonstop
$133Frontier
Wed, Apr 22 - Sun, Apr 26
Frontier Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
8:00 am - 10:12 am
DCA
-
DEN
4h 12mnonstop
$136Frontier
Sat, Apr 11 - Tue, Apr 14
Frontier Logo
6:40 am - 12:02 pm
DEN
-
DCA
3h 22mnonstop
Frontier Logo
8:00 am - 10:12 am
DCA
-
DEN
4h 12mnonstop
$139Frontier
Tue, Mar 31 - Fri, Apr 3
Frontier Logo
4:38 pm - 9:59 pm
DEN
-
DCA
3h 21mnonstop
Frontier Logo
6:00 pm - 8:11 pm
DCA
-
DEN
4h 11mnonstop
$142Frontier
Tue, Mar 31 - Mon, Apr 6
Frontier Logo
4:38 pm - 9:59 pm
DEN
-
DCA
3h 21mnonstop
Frontier Logo
1:00 pm - 3:05 pm
DCA
-
DEN
4h 05mnonstop
$143Frontier
Wed, Apr 22 - Sun, Apr 26
Frontier Logo
11:34 am - 4:59 pm
DEN
-
DCA
3h 25mnonstop
Frontier Logo
8:00 am - 10:12 am
DCA
-
DEN
4h 12mnonstop
$145Frontier
Fri, May 1 - Sun, May 3
Frontier Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
8:00 am - 10:12 am
DCA
-
DEN
4h 12mnonstop
$146Frontier
Wed, Apr 8 - Mon, Apr 13
Frontier Logo
6:40 am - 12:02 pm
DEN
-
DCA
3h 22mnonstop
Frontier Logo
1:00 pm - 3:05 pm
DCA
-
DEN
4h 05mnonstop
$147Frontier
Booking Insights

KAYAK's insights & trends for Denver to Reagan-National flights

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

What’s the cheapest day of the week to fly from Denver to Reagan Washington National Airport?

The average price of all round-trip flights from Denver to Washington, D.C. Reagan-National Airport clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Reagan Washington National Airport on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Denver to Reagan Washington National Airport. For your return ticket, we recommend flying on a Saturday and avoiding Thursdays for the best deals.

What is the cheapest month to fly from Denver to Washington, D.C. Reagan-National Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Washington, D.C. Reagan-National Airport, 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 Denver to Washington, D.C. Reagan-National Airport is February, where tickets cost $181 (return) on average. On the other hand, the most expensive months are November and December, where the average cost of round-trip tickets is $334 and $304 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Washington, D.C. Reagan-National Airport, 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 Denver to Washington, D.C. Reagan-National Airport, you should book around 2 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Expert advice

Expert advice for your flight from Denver to Reagan-National

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on DCA

An avid traveler 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.

Harriet Baskas

Harriet Baskas

Expert on DEN

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, USA TODAY, 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.

Good to know

Low seasonJanuary
Cheapest flight$74
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Denver to Reagan Washington National Airport

When to book flights from Denver to Reagan-National

Are your dates flexible? Find out the best times to travel from Denver to Reagan-National based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 Denver to Reagan Washington National Airport flights

  • Are there pet relief stations at DEN?

    Yes. DEN provides animal relief stations that feature artificial turf, a sink, soap, doggy waist bags, trash cans, and a drainage system. These stations can be found on the A, C, and C Concourses right in the center, near the US mail. The relief station in the Jeppesen Terminal is on the west side, just outside door 200.

  • Does DEN have a military lounge?

    Yes. If you are an active-duty or retired member of the US military, or a family member, you can take advantage of the USO military lounge free of charge at the Denver International Airport. This lounge is located on Level 4 of Concourse A, airside. Benefits of relaxing in this lounge include soda, snacks, coffee, water, comfy seating, games, Wi-Fi, and flight time boards.

  • If I want to stay near DEN the night before my flight to Washington, where can I find a hotel?

    The Westin Denver International Airport hotel is connected to the Jeppesen Terminal at the Denver International Airport. You can also get free shuttle service to your terminal if your plane is not leaving from the Jeppesen Terminal. Other amenities of this refined, comfortable hotel include a pool, a bar, a fitness center, a restaurant, room service, and much more.

  • Does DCA provide facilities for nursing moms?

    Yes. There are two private, comfortable, quiet nursing rooms in DCA where traveling moms can get out of the hustle and bustle of the terminals in order to breastfeed in private or pump. Each nursing room features rocking chairs, changing tables, and power outlets. You can find these rooms in Terminal A, just before this security checkpoint and in the National Hall, landside.

  • What is the cheapest flight from Denver to Washington, D.C. Reagan-National Airport?

    In the last 3 days, the lowest price for a flight from Denver to Washington, D.C. Reagan-National Airport was $74 for a one-way ticket and $131 for a round-trip.

  • Do I need a passport to fly between Denver and Reagan Washington National Airport?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Denver to Reagan Washington National Airport?

    When flying out of Denver you will be using Denver Intl. You will be landing at Reagan Washington National Airport, also known as Washington, D.C. Reagan-National.

  • Which airlines offer Wi-Fi service onboard planes from Denver to Reagan Washington National Airport?

    JetBlue, American Airlines, and Alaska Airlines offer inflight Wi-Fi service on the Denver to Reagan Washington National Airport flight route.

  • Which aircraft models fly most regularly from Denver to Reagan Washington National Airport?

    The Airbus A320neo is the aircraft model that flies most regularly on the Denver to Reagan Washington National Airport flight route.

  • Which airline alliances offer flights from Denver to Reagan Washington National Airport?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Denver and Reagan Washington National Airport, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Denver to Reagan Washington National Airport?

    There are nonstop flights from Denver to Reagan Washington National Airport on a daily basis.

  • Which is the best airline for flights from Denver to Washington, D.C., Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Denver to Washington, D.C. are Southwest and Delta. With an average price for the route of $334 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $337 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Denver to Reagan Washington National Airport?

    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 Denver to Reagan Washington National Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Reagan Washington National Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reagan Washington National Airport from Denver 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 Denver to Reagan Washington National Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reagan Washington National Airport with an airline and back to Denver with another airline. Booking your flights between Denver and DCA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Reagan Washington National Airport?

    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 Reagan Washington National Airport from Denver 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 Denver to Washington, D.C. Reagan-National Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $114 or less one-way and $186 or less round-trip.
  • Located on the eastern side of Denver, the Denver International Airport (DEN) is a hub for United Airlines, Southwest, Frontier, and many other smaller and regional airlines. The Ronald Reagan Washington National Airport (DCA) is located just outside Washington DC, in Virginia. This airport serves as a hub for American Airlines.
  • United Airlines and Frontier are among the carriers that operate non-stop flights between DEN and DCA. Delta, United Airlines, and American Airlines operate one-stop flights between DEN and DCA. Layover cities include Detroit (DTW), New York (LGA), New York (EWR), Chicago (ORD), and Houston (IAH).
  • If you need to pass the time at the Denver International Airport as you wait for your flight to Washington, stroll around the airport to enjoy the many artworks on display, including sculptures, murals, paintings, and exterior landscapes. DEN features pieces of its permanent collection as well as rotating exhibitions. The mural in the Jeppesen Terminal on level 5 is particularly striking.
  • There is an Interfaith Chapel located in DCA on Concourse B at the south end, across from the Delta Airlines gates and behind the Dunkin' Donuts. You can use this quiet space as a place of reflection, prayer, or meditation. There are also scheduled Protestant and Catholic services led by the clergy, as well as Jewish and Islamic prayer times that are not led by any clergy.
  • When you land at DCA, consider going to the Observation Area to relax and watch the planes land and take off. In Terminal B and Terminal C, the Observation Areas are on terraces. The Observation Area in Terminal A provides rocking chairs where you can sit to enjoy watching the airplanes.

Prefer to fly direct from Denver to Reagan Washington National Airport?

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

Direct departures

Denver Intl to Washington, D.C. Reagan-National

Monday

Frontier,United Airlines

Frontier,United Airlines

Tuesday

Frontier,United Airlines

Frontier,United Airlines

Wednesday

Frontier,United Airlines

Frontier,United Airlines

Thursday

Frontier,United Airlines

Frontier,United Airlines

Friday

Frontier,United Airlines

Frontier,United Airlines

Saturday

Frontier,United Airlines

Frontier,United Airlines

Sunday

Frontier,United Airlines

Frontier,United Airlines

See more direct flights

Direct returns

Washington, D.C. Reagan-National to Denver Intl

Monday

Frontier,United Airlines

Frontier,United Airlines

Tuesday

Frontier,United Airlines

Frontier,United Airlines

Wednesday

Frontier,United Airlines

Frontier,United Airlines

Thursday

Frontier,United Airlines

Frontier,United Airlines

Friday

Frontier,United Airlines

Frontier,United Airlines

Saturday

Frontier,United Airlines

Frontier,United Airlines

Sunday

Frontier,United Airlines

Frontier,United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Denver to Reagan-National

 
See real verified KAYAK customer reviews for airlines flying from Denver to Washington, D.C.. 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 Denver to Reagan-National? 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.
8.0
SouthwestOverall score based on 4319 reviews
8.1Boarding
7.5Entertainment
7.0Food
8.0Comfort
8.6Crew
Airline reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

4.0 OkayKenny, Mar 2026
TPA - BWI
Read more Southwest reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

The flight was flying with 30% capacity. The flight my seat from preferred seating to back of the seat. Even though i can understand that this was to balance the flight weight. The flight attendance decided to do the serving near my seat and in the middle , their noices woke me up from sleep , when i realized that the service has ended and when they were going back asked for a coffee, for which they answered they have completed teh service in my location. That really upset me as they woke me up and also rejected the coffee i asked. I ended up landing with a headache, thanks to the crew that screwed up my travel

Delayed. Hot. Passenger next to me was so large I couldn’t move.

Same experience as the flight from Norfolk to Atlanta where people are boarded in zones that don't make sense. People behind you on the plane will get on before you and they take the luggage space on your row.

The boarding process doesn't make sense since some people that will sit behind your rows are boarded before you and then they take up the luggage space above your head. I then have to wait for people to get off the plane before I can go back to get my luggage.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Terrible. They wouldn't allow me on my flight on the 14th..

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Never going to fly your airline again if it can be avoided.

Not to have gotten delayed by 2+ hours for the fourth straight American flight. They're the worst.

Other than nearly three hour delay for maintenance issues, everything went smooth

Snow delayed boarding several times, which I understand happens. Issue I had was that after we did board, pilot told us we were going to roll out to be de-iced, then on our way. We were de-iced once, taxied to the tarmac and then stopped. Sat for another 30 minutes or so, the another de-icing. Then we rolled out to a parking spot, only to sit for another hour due to a traffic stop in DCA, which I'm confident they knew would happen before we boarded. Pilot gave no updates other than we had to hold, attendants did speak to the crew, but when asked, said the pilot would be updating us. We on the ground in the plane waiting for over 2 hours. They did communicate that bathrooms would be open, but no other news until we left. Would have been better to be up front about status.

Flight was delayed. Not much information on when the flight would take off. Eventually we were told it was maintenance. App was not giving updates.

Flight was on time and there was an empty seat next to me. That makes for a good flight!

Maintenance took a very long time and then we were in a holding pattern. While a one-off maintenance issue is standard, there were delays on both of my flights for this trip based on maintenance issues with the planes, which delayed both flights over 45 minutes. Thankfully, I didn't have any connections but it wasn't an experience that would make me pick AA if I have other options.

Everything was good. Flight was very full so crew was busy. After we boarded and plane pulled away from the gate, we were delayed about 40 minutes- sitting on the runway - due to weather en route or at the destination. While weather is not the fault of the airline- it’s terrible to sit on a plane and not moving.

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

I got sick nothing contagious but distressing enough and the care I received on the flight was astounding.

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

Everything you need to know for your flight from Denver to Reagan-National

Information on your arrival and departure airports