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Cheap flights from Denver to Washington, D.C. from $151

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 12/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:25 am - 12:49 pm
DEN
-
DCA
3h 24mnonstop
Frontier Logo
7:00 am - 9:04 am
DCA
-
DEN
4h 04mnonstop
$237Frontier
Wed, Nov 4 - Wed, Nov 11
Frontier Logo
7:25 am - 12:49 pm
DEN
-
DCA
3h 24mnonstop
Frontier Logo
7:00 am - 9:04 am
DCA
-
DEN
4h 04mnonstop
$237Frontier
Sat, Nov 7 - Sun, Nov 8
Multiple Airlines Logo
11:37 pm - 7:58 am
DEN
-
DCA
6h 21m
1 stop
Multiple Airlines Logo
7:00 am - 9:01 am
DCA
-
DEN
4h 01mnonstop
$240Multiple Airlines
Sat, Sep 5 - Tue, Sep 8
Multiple Airlines Logo
11:37 pm - 7:58 am
DEN
-
DCA
6h 21m
1 stop
Multiple Airlines Logo
1:59 pm - 3:53 pm
DCA
-
DEN
3h 54mnonstop
$240Multiple Airlines
Sat, Aug 22 - Sun, Aug 23
United Airlines Logo
9:35 am - 3:03 pm
DEN
-
DCA
3h 28mnonstop
United Airlines Logo
4:20 pm - 6:22 pm
DCA
-
DEN
4h 02mnonstop
$319United Airlines
Fri, Sep 11 - Sun, Sep 13
United Airlines Logo
9:35 am - 3:06 pm
DEN
-
DCA
3h 31mnonstop
United Airlines Logo
4:20 pm - 6:22 pm
DCA
-
DEN
4h 02mnonstop
$319United Airlines
Wed, Aug 26 - Wed, Sep 2
Southwest Logo
7:15 am - 2:05 pm
DEN
-
DCA
4h 50m
1 stop
Southwest Logo
12:30 pm - 3:30 pm
DCA
-
DEN
5h 00m
1 stop
$324Southwest
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
7:15 am - 2:05 pm
DEN
-
DCA
4h 50m
1 stop
Southwest Logo
4:50 pm - 7:50 pm
DCA
-
DEN
5h 00m
1 stop
$324Southwest
Sat, Sep 26 - Wed, Sep 30
American Airlines Logo
2:17 pm - 11:59 pm
DEN
-
DCA
7h 42m
1 stop
American Airlines Logo
5:00 am - 10:06 am
DCA
-
DEN
7h 06m
1 stop
$333American Airlines
Thu, Nov 5 - Mon, Nov 9
American Airlines Logo
12:50 pm - 9:13 pm
DEN
-
DCA
6h 23m
1 stop
American Airlines Logo
5:00 am - 10:11 am
DCA
-
DEN
7h 11m
1 stop
$333American Airlines
Thu, Sep 3 - Mon, Sep 7

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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
Nov 4
DEN7:25 amDenver Intl
3h 24m
DCA12:49 pmWashington, D.C. Reagan-National
Nov 11
DCA7:00 amWashington, D.C. Reagan-National
4h 04m
DEN9:04 amDenver Intl
$237
Frontier
Aug 29
DEN7:30 amDenver Intl
3h 21m
DCA12:51 pmWashington, D.C. Reagan-National
Sep 4
DCA1:59 pmWashington, D.C. Reagan-National
3h 54m
DEN3:53 pmDenver Intl
$238
Frontier
Sep 18
DEN7:25 amDenver Intl
3h 24m
DCA12:49 pmWashington, D.C. Reagan-National
Sep 20
DCA7:00 amWashington, D.C. Reagan-National
4h 03m
DEN9:03 amDenver Intl
$246

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

Our best JetBlue deals on Denver to Washington, D.C. Reagan-National Airport flight tickets
JetBlue
Nov 22
DEN11:59 pmDenver Intl
10h 11m
1 stop
DCA12:10 pmWashington, D.C. Reagan-National
Dec 1
DCA2:50 pmWashington, D.C. Reagan-National
9h 37m
1 stop
DEN10:27 pmDenver Intl
$242
JetBlue
Aug 24
DEN9:54 amDenver Intl
9h 56m
1 stop
DCA9:50 pmWashington, D.C. Reagan-National
Aug 27
DCA2:25 pmWashington, D.C. Reagan-National
10h 17m
1 stop
DEN10:42 pmDenver Intl
$247
JetBlue
Aug 28
DEN11:37 pmDenver Intl
10h 24m
1 stop
DCA12:01 pmWashington, D.C. Reagan-National
Aug 31
DCA4:45 pmWashington, D.C. Reagan-National
7h 57m
1 stop
DEN10:42 pmDenver Intl
$257

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 July 28, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 11/4

7:25 am-12:49 pm

Nonstop3h 24m

Washington, D.C. Reagan-National

Wed 11/11

7:00 am-9:04 am

Nonstop4h 04m

$237

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 11/7

7:25 am-12:49 pm

Nonstop3h 24m

Washington, D.C. Reagan-National

Sun 11/8

7:00 am-9:04 am

Nonstop4h 04m

$237

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 9/5

11:37 pm-7:58 am

1 stop6h 21m

Washington, D.C. Reagan-National

Tue 9/8

7:00 am-9:01 am

Nonstop4h 01m

$240

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 8/22

11:37 pm-7:58 am

1 stop6h 21m

Washington, D.C. Reagan-National

Sun 8/23

1:59 pm-3:53 pm

Nonstop3h 54m

$240

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 9/11

9:35 am-3:03 pm

Nonstop3h 28m

Washington, D.C. Reagan-National

Sun 9/13

4:20 pm-6:22 pm

Nonstop4h 02m

$319

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 8/26

9:35 am-3:06 pm

Nonstop3h 31m

Washington, D.C. Reagan-National

Wed 9/2

4:20 pm-6:22 pm

Nonstop4h 02m

$319

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 8/22

7:15 am-2:05 pm

1 stop4h 50m

Washington, D.C. Reagan-National

Sat 8/29

12:30 pm-3:30 pm

1 stop5h 00m

$324

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 9/26

7:15 am-2:05 pm

1 stop4h 50m

Washington, D.C. Reagan-National

Wed 9/30

4:50 pm-7:50 pm

1 stop5h 00m

$324

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Thu 11/5

2:17 pm-11:59 pm

1 stop7h 42m

Washington, D.C. Reagan-National

Mon 11/9

5:00 am-10:06 am

1 stop7h 06m

$333

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Thu 9/3

12:50 pm-9:13 pm

1 stop6h 23m

Washington, D.C. Reagan-National

Mon 9/7

5:00 am-10:11 am

1 stop7h 11m

$333

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?

Prices are currently typical for flights on this route.

Typical prices usually range from $185 to $375.
The lowest price recently found on this route was $237.

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

The month of February is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Denver, with most prices found around $185. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $198.

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 Saturday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Saturday will often find tickets for as low as $272. Flights from Denver to Washington, D.C. Reagan-National Airport on a Monday will generally be more expensive and average around $364. 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 at noon. Our users have found flights to Washington, D.C. Reagan-National Airport at noon for as low as $167. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the morning when prices are around $304.

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 from Denver 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 $303 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 $248 on momondo.

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

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

Can stopping save me money on Denver to Washington, D.C. Reagan-National Airport flights?

No. A direct flight is the cheapest option for a flight between Denver to Washington, D.C. Reagan-National Airport.

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

As of July 2026, prices for Denver to Washington, D.C. Reagan-National Airport flights are approximately 567% more expensive 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

$212

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 $212. The best round-trip flight deal from Denver to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $294.
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

Frequently asked questions about flying from Denver to Washington, D.C. Reagan-National Airport

  • 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 16m 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 $103Free CancellationRating
5.6
2,753 reviews
Search Frontier flights
DeltaPriceFrom $144Free CancellationRating
7.8
8,488 reviews
Search Delta flights
American AirlinesPriceFrom $186Free CancellationRating
7.1
11,847 reviews
Search American Airlines flights
United AirlinesPriceFrom $197Free CancellationRating
7.4
10,046 reviews
Search United Airlines flights
SouthwestPriceFrom $237Free CancellationRating
8.0
4,229 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 10 times per week, with 4,229 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 $237 (round-trip), much lower than the average airfare cost of $386 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 $197 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $570. United Airlines operates 15 flights to Washington, D.C. Reagan-National Airport from Denver in an average week. Users have rated it 7.4/10 across 10,047 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
National Harbor
Arlington
Gettysburg
Waldorf
Laurel
Woodbridge
Fredericksburg
Gaithersburg
Linthicum Heights
Rockville
Silver Spring
Towson
Colonial Beach
Springfield
Fairfax
Tysons
Bethesda
Edgewood
College Park

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.

An easier way to manage your Washington, D.C. Reagan-National Airport trip

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