Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Denver to Washington, D.C. from $79

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 5/12. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
6:00 pm - 8:11 pm
DCA
-
DEN
4h 11mnonstop
$134Frontier
Tue, Apr 21 - Sat, Apr 25
Frontier Logo
7:35 am - 1:00 pm
DEN
-
DCA
3h 25mnonstop
Frontier Logo
7:00 am - 9:12 am
DCA
-
DEN
4h 12mnonstop
$136Frontier
Sat, May 2 - Wed, May 6
Frontier Logo
7:35 am - 1:00 pm
DEN
-
DCA
3h 25mnonstop
Frontier Logo
1:59 pm - 4:04 pm
DCA
-
DEN
4h 05mnonstop
$137Frontier
Sat, Apr 25 - Sat, May 2
Frontier Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
1:59 pm - 4:04 pm
DCA
-
DEN
4h 05mnonstop
$138Frontier
Tue, Apr 14 - Tue, Apr 21
Frontier Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
8:00 am - 10:12 am
DCA
-
DEN
4h 12mnonstop
$151Frontier
Sat, Apr 25 - Wed, Apr 29
Frontier Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
8:00 am - 10:12 am
DCA
-
DEN
4h 12mnonstop
$161Frontier
Sat, Apr 11 - Tue, Apr 14
Frontier Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
8:00 am - 10:12 am
DCA
-
DEN
4h 12mnonstop
$162Frontier
Sat, Apr 11 - Tue, Apr 14
Frontier Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Frontier Logo
6:00 pm - 8:11 pm
DCA
-
DEN
4h 11mnonstop
$163Frontier
Tue, Apr 14 - Sat, Apr 18
Frontier Logo
11:34 am - 4:59 pm
DEN
-
DCA
3h 25mnonstop
Frontier Logo
6:00 pm - 8:11 pm
DCA
-
DEN
4h 11mnonstop
$170Frontier
Thu, Apr 16 - Sat, Apr 25
Multiple Airlines Logo
4:36 pm - 9:59 pm
DEN
-
DCA
3h 23mnonstop
Multiple Airlines Logo
3:35 pm - 10:13 pm
DCA
-
DEN
8h 38m
1 stop
$174Multiple Airlines
Sat, Apr 25 - Wed, Apr 29

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
Apr 7
DEN11:15 pmDenver Intl
6h 54m
1 stop
DCA8:09 amWashington, D.C. Reagan-National
Apr 14
DCA4:59 pmWashington, D.C. Reagan-National
7h 14m
1 stop
DEN10:13 pmDenver Intl
$213
JetBlue
Mar 25
DEN2:50 pmDenver Intl
6h 09m
1 stop
DCA10:59 pmWashington, D.C. Reagan-National
Mar 31
DCA4:59 pmWashington, D.C. Reagan-National
7h 31m
1 stop
DEN10:30 pmDenver Intl
$224
JetBlue
Mar 4
DEN11:15 pmDenver Intl
6h 48m
1 stop
DCA8:03 amWashington, D.C. Reagan-National
Mar 7
DCA6:00 amWashington, D.C. Reagan-National
7h 04m
1 stop
DEN11:04 amDenver Intl
$294

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

Our best Delta deals on Denver to Washington, D.C. Reagan-National Airport flight tickets
Delta
Apr 17
DEN12:55 amDenver Intl
6h 14m
1 stop
DCA9:09 amWashington, D.C. Reagan-National
Apr 22
DCA12:25 pmWashington, D.C. Reagan-National
6h 30m
1 stop
DEN4:55 pmDenver Intl
$217
Delta
Feb 28
DEN6:00 amDenver Intl
8h 27m
1 stop
DCA4:27 pmWashington, D.C. Reagan-National
Mar 4
DCA7:30 pmWashington, D.C. Reagan-National
6h 53m
1 stop
DEN12:23 amDenver Intl
$387

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 February 22, 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

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 4/21

4:36 pm-9:59 pm

Nonstop3h 23m

Washington, D.C. Reagan-National

Sat 4/25

6:00 pm-8:11 pm

Nonstop4h 11m

$134

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 5/2

7:35 am-1:00 pm

Nonstop3h 25m

Washington, D.C. Reagan-National

Wed 5/6

7:00 am-9:12 am

Nonstop4h 12m

$136

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 4/25

7:35 am-1:00 pm

Nonstop3h 25m

Washington, D.C. Reagan-National

Sat 5/2

1:59 pm-4:04 pm

Nonstop4h 05m

$137

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 4/14

4:36 pm-9:59 pm

Nonstop3h 23m

Washington, D.C. Reagan-National

Tue 4/21

1:59 pm-4:04 pm

Nonstop4h 05m

$138

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 4/25

4:36 pm-9:59 pm

Nonstop3h 23m

Washington, D.C. Reagan-National

Wed 4/29

8:00 am-10:12 am

Nonstop4h 12m

$151

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 4/11

4:36 pm-9:59 pm

Nonstop3h 23m

Washington, D.C. Reagan-National

Tue 4/14

8:00 am-10:12 am

Nonstop4h 12m

$161

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 4/11

4:36 pm-9:59 pm

Nonstop3h 23m

Washington, D.C. Reagan-National

Tue 4/14

8:00 am-10:12 am

Nonstop4h 12m

$162

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 4/14

4:36 pm-9:59 pm

Nonstop3h 23m

Washington, D.C. Reagan-National

Sat 4/18

6:00 pm-8:11 pm

Nonstop4h 11m

$163

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Thu 4/16

11:34 am-4:59 pm

Nonstop3h 25m

Washington, D.C. Reagan-National

Sat 4/25

6:00 pm-8:11 pm

Nonstop4h 11m

$170

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Sat 4/25

4:36 pm-9:59 pm

Nonstop3h 23m

Washington, D.C. Reagan-National

Wed 4/29

3:35 pm-10:13 pm

1 stop8h 38m

$174

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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

The month of January is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Denver, with most prices found around $197. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of January, then flying in February 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 $218. Flights from Denver to Washington, D.C. Reagan-National Airport on a Sunday will generally be more expensive and average around $297. 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 $151. 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 $244.

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 $250 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 $194 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 February 2026, prices for Denver to Washington, D.C. Reagan-National Airport flights are approximately 49% 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

$108

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 $108. 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 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 $97Free CancellationRating
5.7
3,045 reviews
Search Frontier flights
DeltaPriceFrom $144Free CancellationRating
7.9
8,241 reviews
Search Delta flights
United AirlinesPriceFrom $165Free CancellationRating
7.4
9,341 reviews
Search United Airlines flights
American AirlinesPriceFrom $196Free CancellationRating
7.2
11,338 reviews
Search American Airlines flights
SouthwestPriceFrom $207Free CancellationRating
8.0
4,299 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 4 times per week, with 4,299 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 $207 (round-trip), much lower than the average airfare cost of $340 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 $165 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $386. United Airlines operates 14 flights to Washington, D.C. Reagan-National Airport from Denver in an average week. Users have rated it 7.4/10 across 9,341 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
Colonial Beach
Laurel
Silver Spring
Tysons
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Fairfax
Bethesda
Linthicum Heights
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 3/24
Tue 3/31
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.