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Cheap flights from Denver to Washington, D.C. from $83

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 4/26. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:35 am - 12:59 pm
DEN
-
DCA
3h 24mnonstop
Frontier Logo
7:59 am - 10:11 am
DCA
-
DEN
4h 12mnonstop
$177Frontier
Thu, Apr 23 - Tue, Apr 28
Frontier Logo
7:35 am - 12:59 pm
DEN
-
DCA
3h 24mnonstop
Frontier Logo
6:00 pm - 8:11 pm
DCA
-
DEN
4h 11mnonstop
$178Frontier
Mon, Apr 20 - Sat, Apr 25
Frontier Logo
4:27 pm - 9:58 pm
DEN
-
DCA
3h 31mnonstop
Frontier Logo
7:00 am - 9:07 am
DCA
-
DEN
4h 07mnonstop
$181Frontier
Sat, May 16 - Wed, May 27
Frontier Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
7:00 am - 9:07 am
DCA
-
DEN
4h 07mnonstop
$182Frontier
Wed, Apr 29 - Tue, May 5
Frontier Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
7:59 am - 10:11 am
DCA
-
DEN
4h 12mnonstop
$183Frontier
Sat, Apr 25 - Mon, Apr 27
Frontier Logo
11:28 am - 4:59 pm
DEN
-
DCA
3h 31mnonstop
Frontier Logo
7:00 am - 9:07 am
DCA
-
DEN
4h 07mnonstop
$185Frontier
Tue, May 12 - Wed, May 13
Frontier Logo
7:35 am - 12:59 pm
DEN
-
DCA
3h 24mnonstop
Frontier Logo
7:59 am - 10:11 am
DCA
-
DEN
4h 12mnonstop
$186Frontier
Sat, Apr 18 - Wed, Apr 22
Frontier Logo
4:27 pm - 9:58 pm
DEN
-
DCA
3h 31mnonstop
Frontier Logo
7:00 am - 9:07 am
DCA
-
DEN
4h 07mnonstop
$187Frontier
Tue, May 12 - Mon, May 18
Frontier Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
7:59 am - 10:06 am
DCA
-
DEN
4h 07mnonstop
$188Frontier
Wed, Apr 29 - Sat, May 2
Frontier Logo
7:31 am - 12:59 pm
DEN
-
DCA
3h 28mnonstop
Frontier Logo
7:00 am - 9:07 am
DCA
-
DEN
4h 07mnonstop
$190Frontier
Wed, May 6 - Sun, May 10

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
Apr 23
DEN7:35 amDenver Intl
3h 24m
DCA12:59 pmWashington, D.C. Reagan-National
Apr 28
DCA7:59 amWashington, D.C. Reagan-National
4h 12m
DEN10:11 amDenver Intl
$177
Frontier
Apr 20
DEN7:35 amDenver Intl
3h 24m
DCA12:59 pmWashington, D.C. Reagan-National
Apr 25
DCA6:00 pmWashington, D.C. Reagan-National
4h 11m
DEN8:11 pmDenver Intl
$178
Frontier
May 16
DEN4:27 pmDenver Intl
3h 31m
DCA9:58 pmWashington, D.C. Reagan-National
May 27
DCA7:00 amWashington, D.C. Reagan-National
4h 07m
DEN9:07 amDenver Intl
$181

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 April 7, 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

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Thu 4/23

7:35 am-12:59 pm

Nonstop3h 24m

Washington, D.C. Reagan-National

Tue 4/28

7:59 am-10:11 am

Nonstop4h 12m

$177

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Mon 4/20

7:35 am-12:59 pm

Nonstop3h 24m

Washington, D.C. Reagan-National

Sat 4/25

6:00 pm-8:11 pm

Nonstop4h 11m

$178

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 5/16

4:27 pm-9:58 pm

Nonstop3h 31m

Washington, D.C. Reagan-National

Wed 5/27

7:00 am-9:07 am

Nonstop4h 07m

$181
Quickest round-trip

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 4/29

4:36 pm-9:59 pm

Nonstop3h 23m

Washington, D.C. Reagan-National

Tue 5/5

7:00 am-9:07 am

Nonstop4h 07m

$182

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 4/25

4:36 pm-9:59 pm

Nonstop3h 23m

Washington, D.C. Reagan-National

Mon 4/27

7:59 am-10:11 am

Nonstop4h 12m

$183

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 5/12

11:28 am-4:59 pm

Nonstop3h 31m

Washington, D.C. Reagan-National

Wed 5/13

7:00 am-9:07 am

Nonstop4h 07m

$185

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 4/18

7:35 am-12:59 pm

Nonstop3h 24m

Washington, D.C. Reagan-National

Wed 4/22

7:59 am-10:11 am

Nonstop4h 12m

$186

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 5/12

4:27 pm-9:58 pm

Nonstop3h 31m

Washington, D.C. Reagan-National

Mon 5/18

7:00 am-9:07 am

Nonstop4h 07m

$187

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 4/29

4:36 pm-9:59 pm

Nonstop3h 23m

Washington, D.C. Reagan-National

Sat 5/2

7:59 am-10:06 am

Nonstop4h 07m

$188

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 5/6

7:31 am-12:59 pm

Nonstop3h 28m

Washington, D.C. Reagan-National

Sun 5/10

7:00 am-9:07 am

Nonstop4h 07m

$190

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 February is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Denver, with most prices found around $181. 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 $197.

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 $221. Flights from Denver to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $311. 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 afternoon when prices are around $254.

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 $254 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 $196 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 April 2026, prices for Denver to Washington, D.C. Reagan-National Airport flights are approximately 78% 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

$126

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 $126. The best round-trip flight deal from Denver to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $207.
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 $100Free CancellationRating
5.7
3,000 reviews
Search Frontier flights
DeltaPriceFrom $144Free CancellationRating
7.9
8,387 reviews
Search Delta flights
United AirlinesPriceFrom $168Free CancellationRating
7.4
9,548 reviews
Search United Airlines flights
American AirlinesPriceFrom $196Free CancellationRating
7.1
11,546 reviews
Search American Airlines flights
SouthwestPriceFrom $207Free CancellationRating
8.0
4,338 reviews
Search Southwest flights

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

    United Airlines flies from Denver to Washington, D.C. Reagan-National Airport around 13 times per week, with 9,548 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Denver to Washington, D.C. Reagan-National Airport in the last 72 hours was $168 (round-trip), much lower than the average airfare cost of $425 for United Airlines flights on this route.

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

    Frontier is also a popular choice for this route. Frontier flight deals for Denver to Washington, D.C. Reagan-National Airport start from as low as $100 round-trip, depending on your selected dates, with average Frontier deals seen on momondo around $245. Frontier operates 10 flights to Washington, D.C. Reagan-National Airport from Denver in an average week. Users have rated it 5.7/10 across 3,000 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
Gettysburg
Arlington
Waldorf
Woodbridge
Laurel
Colonial Beach
Gaithersburg
Towson
Silver Spring
Fredericksburg
Rockville
Manassas
Tysons
Linthicum Heights
Bethesda
Fairfax
Springfield
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.

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