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Cheap flights from Denver to Washington, D.C. from $84

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 10/2. 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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Find the cheapest flights from Denver to Washington, D.C.

Cheap round-trip flights

Frontier Logo
6:45 am - 12:10 pmDEN-DCA
3h 25mnonstop
Frontier Logo
7:00 am - 9:08 amDCA-DEN
4h 08mnonstop
$135Frontier
Find Deal
Sun, Oct 5 - Wed, Oct 15
Frontier Logo
6:38 am - 12:04 pmDEN-DCA
3h 26mnonstop
Frontier Logo
7:00 am - 9:08 amDCA-DEN
4h 08mnonstop
$136Frontier
Find Deal
Sun, Oct 12 - Wed, Oct 15
Frontier Logo
4:30 pm - 9:59 pmDEN-DCA
3h 29mnonstop
Frontier Logo
7:00 am - 8:58 amDCA-DEN
3h 58mnonstop
$137Frontier
Find Deal
Tue, Sep 23 - Wed, Oct 1
Frontier Logo
6:38 am - 12:04 pmDEN-DCA
3h 26mnonstop
Frontier Logo
7:00 am - 9:08 amDCA-DEN
4h 08mnonstop
$138Frontier
Find Deal
Sun, Oct 12 - Wed, Oct 22
Frontier Logo
6:38 am - 12:04 pmDEN-DCA
3h 26mnonstop
Frontier Logo
7:00 am - 9:08 amDCA-DEN
4h 08mnonstop
$140Frontier
Find Deal
Sun, Oct 12 - Wed, Oct 15
United Airlines Logo
9:35 am - 2:55 pmDEN-DCA
3h 20mnonstop
United Airlines Logo
5:00 pm - 9:49 pmDCA-DEN
6h 49m1 stop
$155United Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
Southwest Logo
7:45 am - 4:15 pmDEN-DCA
6h 30m1 stop
Southwest Logo
4:40 pm - 7:50 pmDCA-DEN
5h 10m1 stop
$164Southwest
Find Deal
Sat, Nov 15 - Tue, Nov 18
American Airlines Logo
7:16 am - 4:29 pmDEN-DCA
7h 13m1 stop
American Airlines Logo
3:50 pm - 8:27 pmDCA-DEN
6h 37m1 stop
$169American Airlines
Find Deal
Sat, Oct 4 - Wed, Oct 8
Southwest Logo
9:30 am - 7:30 pmDEN-DCA
8h 00m2 stops
Southwest Logo
4:40 pm - 7:50 pmDCA-DEN
5h 10m1 stop
$170Southwest
Find Deal
Sat, Nov 15 - Tue, Nov 18
American Airlines Logo
3:57 pm - 11:55 pmDEN-DCA
5h 58m1 stop
American Airlines Logo
6:59 am - 12:15 pmDCA-DEN
7h 16m1 stop
$185American Airlines
Find Deal
Thu, Oct 2 - Tue, Oct 7

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

Our best Frontier deals on Denver to Washington, D.C. Reagan-National Airport flight tickets
Frontier
Oct 5
DEN6:45 amDenver Intl
3h 25m
DCA12:10 pmWashington, D.C. Reagan-National
Oct 15
DCA7:00 amWashington, D.C. Reagan-National
4h 08m
DEN9:08 amDenver Intl
$135
Find similar
Frontier
Oct 12
DEN6:38 amDenver Intl
3h 26m
DCA12:04 pmWashington, D.C. Reagan-National
Oct 15
DCA7:00 amWashington, D.C. Reagan-National
4h 08m
DEN9:08 amDenver Intl
$136
Find similar
Frontier
Sep 23
DEN4:30 pmDenver Intl
3h 29m
DCA9:59 pmWashington, D.C. Reagan-National
Oct 1
DCA7:00 amWashington, D.C. Reagan-National
3h 58m
DEN8:58 amDenver Intl
$137
Find similar

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

Our best Southwest deals on Denver to Washington, D.C. Reagan-National Airport flight tickets
Southwest
Nov 15
DEN7:45 amDenver Intl
6h 30m
1 stop
DCA4:15 pmWashington, D.C. Reagan-National
Nov 18
DCA4:40 pmWashington, D.C. Reagan-National
5h 10m
1 stop
DEN7:50 pmDenver Intl
$164
Find similar
Southwest
Nov 15
DEN9:30 amDenver Intl
8h 00m
2 stops
DCA7:30 pmWashington, D.C. Reagan-National
Nov 18
DCA4:40 pmWashington, D.C. Reagan-National
5h 10m
1 stop
DEN7:50 pmDenver Intl
$170
Find similar
Southwest
Oct 18
DEN2:10 pmDenver Intl
4h 40m
1 stop
DCA8:50 pmWashington, D.C. Reagan-National
Oct 25
DCA6:00 amWashington, D.C. Reagan-National
8h 30m
2 stops
DEN12:30 pmDenver Intl
$174
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Washington, D.C. Reagan-National Airport 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, momondo users made 832,500 searches. Data last updated September 11, 2025.
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

Fly to

Route

Depart

Return

Price

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sun 10/5

6:45 am-12:10 pm

Nonstop3h 25m

Washington, D.C. Reagan-National

Wed 10/15

7:00 am-9:08 am

Nonstop4h 08m

$135

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sun 10/12

6:38 am-12:04 pm

Nonstop3h 26m

Washington, D.C. Reagan-National

Wed 10/15

7:00 am-9:08 am

Nonstop4h 08m

$136

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 9/23

4:30 pm-9:59 pm

Nonstop3h 29m

Washington, D.C. Reagan-National

Wed 10/1

7:00 am-8:58 am

Nonstop3h 58m

$137

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sun 10/12

6:38 am-12:04 pm

Nonstop3h 26m

Washington, D.C. Reagan-National

Wed 10/22

7:00 am-9:08 am

Nonstop4h 08m

$138

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sun 10/12

6:38 am-12:04 pm

Nonstop3h 26m

Washington, D.C. Reagan-National

Wed 10/15

7:00 am-9:08 am

Nonstop4h 08m

$140

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 11/15

9:35 am-2:55 pm

Nonstop3h 20m

Washington, D.C. Reagan-National

Tue 11/18

5:00 pm-9:49 pm

1 stop6h 49m

$155

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 11/15

7:45 am-4:15 pm

1 stop6h 30m

Washington, D.C. Reagan-National

Tue 11/18

4:40 pm-7:50 pm

1 stop5h 10m

$164

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 10/4

7:16 am-4:29 pm

1 stop7h 13m

Washington, D.C. Reagan-National

Wed 10/8

3:50 pm-8:27 pm

1 stop6h 37m

$169

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 11/15

9:30 am-7:30 pm

2 stops8h 00m

Washington, D.C. Reagan-National

Tue 11/18

4:40 pm-7:50 pm

1 stop5h 10m

$170

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Thu 10/2

3:57 pm-11:55 pm

1 stop5h 58m

Washington, D.C. Reagan-National

Tue 10/7

6:59 am-12:15 pm

1 stop7h 16m

$185

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Denver to Washington, D.C. Reagan-National Airport

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 typical price of a round-trip flight between Denver and Washington, D.C. Reagan-National Airport?

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

The month of September is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Denver, with most prices found around $207. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $211.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from Denver to Washington, D.C. Reagan-National Airport is on a Wednesday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Wednesday will often find tickets for as low as $204. Flights from Denver to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $291. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest Denver to Washington, D.C. Reagan-National Airport flights are usually those with departure times in the morning. Our users have found flights to Washington, D.C. Reagan-National Airport in the morning for as low as $238. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is at noon when prices are around $317.

What is the cheapest Denver Intl to Washington, D.C. Reagan-National flight route?

Fly from Denver Intl to Washington, D.C. Reagan-National for the best Denver Intl - Washington, D.C. Reagan-National flight prices

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

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around $252 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from Denver for as low as $207 on momondo.

What cabin class options are available on Denver Intl to Washington, D.C. Reagan-National flights?

There are 4 cabin classes available to choose from on Denver Intl to Washington, D.C. Reagan-National flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Denver to Washington, D.C. Reagan-National Airport flight prices changed over time?

As of September 2025, prices for Denver to Washington, D.C. Reagan-National Airport flights are approximately 16% cheaper when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Washington, D.C. Reagan-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Washington, D.C. Reagan-National Airport (DEN to DCA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Washington, D.C. Reagan-National Airport

Best Price Found

$98

Fastest flight time

3h 16m

Direct flights

Every day
The best one-way flight to Washington, D.C. Reagan-National Airport from Denver in the past 72 hours is $98. The best round-trip flight deal from Denver to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $149.
The fastest flight from Denver to Washington, D.C. Reagan-National Airport takes 3h 16m
Direct flights go from Denver to Washington, D.C. Reagan-National Airport every day.
Search flight deals

  • How far is Denver Intl to Washington, D.C. Reagan-National by plane?

    The straight-line distance from Denver Intl to Washington, D.C. Reagan-National is 1488.5 mi. Typically, this will take 3h 20m by plane in normal conditions.

  • When did momondo last update prices for flights from Denver Intl Airport to Washington, D.C. Reagan-National Airport?

    Prices for flights from Denver Intl Airport to Washington, D.C. Reagan-National Airport were last updated today.

  • How many operators does momondo search for flights from Denver Intl Airport to Washington, D.C. Reagan-National Airport?

  • How old do you have to be to fly from Denver Intl Airport to Washington, D.C. Reagan-National Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Reagan-National Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. It is always advisable to seek 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. Reagan-National Airport?

  • What is the most popular airline from Denver to Washington, D.C. Reagan-National Airport?

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

Compare and see reviews for airlines that fly from Denver to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $100Free CancellationRating
5.8
3,177 reviews
Search Frontier flights
American AirlinesPriceFrom $166Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $188Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
DeltaPriceFrom $216Free CancellationRating
7.9
7,960 reviews
Search Delta flights
SouthwestPriceFrom $247Free CancellationRating
8.0
4,248 reviews
Search Southwest flights

  • Southwest Flights From Denver to Washington, D.C. Reagan-National Airport

    Southwest flies from Denver to Washington, D.C. Reagan-National Airport around 6 times per week, with 4,248 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Denver to Washington, D.C. Reagan-National Airport in the last 72 hours was $247 (round-trip), much lower than the average airfare cost of $359 for Southwest flights on this route.

  • United Airlines Flights From Denver to Washington, D.C. Reagan-National Airport

    United Airlines is also a popular choice for this route. United Airlines flight deals for Denver to Washington, D.C. Reagan-National Airport start from as low as $188 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $397. United Airlines operates 7 flights to Washington, D.C. Reagan-National Airport from Denver in an average week. Users have rated it 7.4/10 across 8,937 reviews.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
National Harbor
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Manassas
Reston
Fairfax
Gaithersburg
Glen Burnie
Springfield
Linthicum Heights

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Washington, D.C.?

Finding the right flight to Washington, D.C. from Denver is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

Can I find flights from Denver to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Denver to Washington, D.C. flights to just show those with flexible booking policies.

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?

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from Denver and alert you when they change.

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