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Reagan-National

$84+ Cheap flights from Denver (DEN) to Reagan-National (DCA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DCA
mar. 5 — mar. 121
jue. 3/5
jue. 3/12
1 adult, Economy
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Find cheap flights from Denver to Reagan-National with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Denver Intl to Washington, D.C. Reagan-National are usually found in February or September, booked 75 days in advance, depart on a Wednesday or Saturday and return on a Saturday

Cheap flight deals from Denver to Reagan-National

Cheapest flights from Denver to Reagan-National
Explore the most affordable flight options available from Denver to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 3, 2026.

This Super.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/104:38 pm
DEN
-
DCA
Nonstop3h 21m
Frontier
vie. 3/138:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Deal found 2/2$110
This Cheapflightsfares deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/114:38 pm
DEN
-
DCA
Nonstop3h 21m
Frontier
vie. 3/132:00 pm
DCA
-
DEN
Nonstop4h 22m
Frontier
Deal found 2/3$111
This Frontier deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/127:35 am
DEN
-
DCA
Nonstop3h 27m
Frontier
mar. 3/178:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Deal found 1/31$113
This Super.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/244:38 pm
DEN
-
DCA
Nonstop3h 21m
Frontier
jue. 2/266:00 pm
DCA
-
DEN
Nonstop4h 16m
Frontier
Deal found 2/3$115
This Trip.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/217:33 am
DEN
-
DCA
Nonstop3h 27m
Frontier
mié. 2/252:00 pm
DCA
-
DEN
Nonstop4h 22m
Frontier
Deal found 2/3$116
This Cheapflightsfares deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/127:35 am
DEN
-
DCA
Nonstop3h 27m
Frontier
lun. 3/162:00 pm
DCA
-
DEN
Nonstop4h 22m
Frontier
Deal found 2/2$117
This Cheapflightsfares deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/197:48 am
DEN
-
DCA
Nonstop3h 27m
Frontier
vie. 2/206:00 pm
DCA
-
DEN
Nonstop4h 16m
Frontier
Deal found 2/3$122
This Super.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/257:48 am
DEN
-
DCA
Nonstop3h 27m
Frontier
vie. 2/276:00 pm
DCA
-
DEN
Nonstop4h 16m
Frontier
Deal found 2/2$125
This Super.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/237:33 am
DEN
-
DCA
Nonstop3h 27m
Frontier
sáb. 2/286:00 pm
DCA
-
DEN
Nonstop4h 16m
Frontier
Deal found 2/1$126
This Cheapflightsfares deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/227:48 am
DEN
-
DCA
Nonstop3h 27m
Frontier
sáb. 2/288:00 am
DCA
-
DEN
Nonstop4h 22m
Frontier
Deal found 2/1$127
This Frontier deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/316:40 am
DEN
-
DCA
Nonstop3h 24m
Frontier
vie. 4/31:00 pm
DCA
-
DEN
Nonstop4h 05m
Frontier
Deal found 2/1$128

Find flight deals from Denver to Reagan-National

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Reagan-National (DCA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated febrero 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$110
(Super.com)

One-way from

$84
(Cheapflightsfares)

Popular in

November

Cheapest in

February

Average price

$198

Good round-trip deal

$156 or less

Good one-way deal

$119 or less
Provider with most accurate pricing for Denver Intl-Washington, D.C. Reagan-National flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Washington, D.C. Reagan-National flights.
Search Deals
From Denver Intl to Washington, D.C. Reagan-National
Search Deals
One-way flight from Denver Intl to Washington, D.C. Reagan-National
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Denver Intl to Washington, D.C. Reagan-National.
Search Deals
Price to beat on a one-way flight from Denver Intl to Washington, D.C. Reagan-National.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver to Reagan-National that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 3, 2026.
Use the filters below to find and compare flights from Denver to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Denver

Fly to

Reagan-National

Route

Depart

Return

Price

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

jue. 3/5

2:45 pm-10:33 pm

1 stop5h 48m

Washington, D.C. Reagan-National

dom. 3/8

6:14 am-11:25 am

1 stop7h 11m

$237

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

mar. 3/31

11:55 pm-10:20 am

1 stop8h 25m

Washington, D.C. Reagan-National

sáb. 4/4

6:00 am-9:43 am

1 stop5h 43m

$257

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

mié. 4/8

3:02 pm-10:51 pm

1 stop5h 49m

Washington, D.C. Reagan-National

lun. 4/13

7:30 pm-12:33 am

1 stop7h 03m

$257

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

jue. 4/2

4:00 pm-11:55 pm

1 stop5h 55m

Washington, D.C. Reagan-National

lun. 4/6

7:20 pm-12:25 am

1 stop7h 05m

$277

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

jue. 2/19

2:42 pm-11:28 pm

1 stop6h 46m

Washington, D.C. Reagan-National

sáb. 2/21

6:00 pm-12:23 am

1 stop8h 23m

$297

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

jue. 3/12

12:55 am-9:10 am

1 stop6h 15m

Washington, D.C. Reagan-National

mié. 3/18

7:43 pm-12:09 am

1 stop6h 26m

$298

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

jue. 3/12

12:55 am-9:10 am

1 stop6h 15m

Washington, D.C. Reagan-National

mar. 3/17

6:05 am-10:32 am

1 stop6h 27m

$298

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

mié. 6/3

10:34 pm-10:38 am

1 stop10h 04m

Washington, D.C. Reagan-National

lun. 6/8

1:25 pm-9:39 pm

1 stop10h 14m

$300

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

mié. 6/3

10:34 pm-10:38 am

1 stop10h 04m

Washington, D.C. Reagan-National

mar. 6/9

2:59 pm-9:39 pm

1 stop8h 40m

$300

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

mar. 3/10

7:50 am-4:20 pm

2 stops6h 30m

Washington, D.C. Reagan-National

jue. 3/12

6:10 am-11:20 am

1 stop7h 10m

$302

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 21 results
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Compare providers for flights from Denver to Reagan-National

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Denver to Reagan-National in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Denver-Washington, D.C. Reagan-National Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Washington, D.C. Reagan-National Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Washington, D.C. Reagan-National Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Denver-Washington, D.C. Reagan-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Denver to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Washington, D.C. Reagan-National Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Denver to Reagan-National. Price data was last updated on January 30, 2026.

The best time to book flights from Denver to Washington, D.C. Reagan-National Airport is 75 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from Denver to Washington, D.C. Reagan-National Airport (average of $76). Flying from Denver to Washington, D.C. Reagan-National Airport in May is currently the most expensive (average of $142). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to DCA?

Find hourly flight availability from Denver to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 3, 2026.

When flying from Denver to Washington, D.C. Reagan-National Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Denver to Washington, D.C. Reagan-National Airport?

The best insider tips for Denver to Washington, D.C. Reagan-National Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Denver to Washington, D.C. Reagan-National Airport trip
Our travel experts
Emily Zemler

Emily Zemler

Expert on DCA and DEN

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Reviews of airlines servicing Reagan-National

Get insights into the airlines that provide service to Reagan-National. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Reagan-National. Reviews last updated febrero 3, 2026.
Read through reviews of airlines operating flights from Denver to Washington, D.C. Reagan-National Airport, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,138 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,236 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,216 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,051 reviews
Southwest
8.0
Very good
4,272 reviews

Overall

8.0

Food

7.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Denver to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Denver to Washington, D.C. Reagan-National?

    Denver Intl (DEN), located 18.5 mi from the city center, is the airport you fly out of when you book flights from Denver to Washington, D.C. Reagan-National. 5 airlines have flights from Denver Intl to Washington, D.C. Reagan-National on a regular basis. Booking flights from Denver Intl to Washington, D.C. Reagan-National should not be difficult; the airport handles an average of 5 outbound flights to Washington, D.C. Reagan-National per day.

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

    There are many flights that can get you from Denver to Washington, D.C. Reagan-National Airport in 5h 48m. Fly via Delta or Southwest to get the fastest option. Airlines will cover a distance of 1471 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Denver to Washington, D.C. Reagan-National Airport round-trip?

    Frontier, at $97, was found to be the cheapest airline from Denver to Washington, D.C. Reagan-National Airport.Alternate airlines to your destination round-trip include Delta and United Airlines. These flights start at 61% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Denver to Washington, D.C. Reagan-National Airport one-way?

    The cheapest airlines for a one-way flight from Denver to Washington, D.C. Reagan-National Airport are Frontier ($56), Southwest ($98), and American Airlines ($98).

  • What are the most reliable airlines from Denver to Washington, D.C. Reagan-National Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to Washington, D.C. Reagan-National Airport on time: Air Canada (90%), United Airlines (89%), Frontier (78%).

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

    Looking at all options, your cheapest flight can be booked for $44. While the most popular route (Denver Intl - Washington, D.C. Reagan-National) can be booked for $92 on average, our data indicates $230 when flying from Denver to Washington, D.C. Reagan-National Airport.

  • Can I find deals for flights from Denver to Reagan-National that include hotel bookings?

    Yes. In addition to deals on Denver to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Reagan-National?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Reagan-National.

  • Can I find deals for business class flights from Denver to Reagan-National?

    Yes. Cheapflights offers flight deals from Denver to Reagan-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, February is the cheapest month in which you can book a flight from Denver to Washington, D.C. Reagan-National Airport (average of $76). Flying from Denver to Washington, D.C. Reagan-National Airport in May is currently the most expensive (average of $142). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Upper Marlboro
Manassas
Largo
Bowie
McLean
Clinton

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Denver to Reagan-National

Discover the top 5 airlines that operate flights from Denver to Reagan-National. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$97Average$236FlexibilityNo cancel feeOn-time62%
DeltaCheapest$144Average$337FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$165Average$383FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$196Average$266FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$207Average$343FlexibilityNo cancel feeOn-time63%

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