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Cheap flights from Denver to Washington, D.C. from $41

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 10/16. 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 - 12:11 pmDEN-DCA
3h 26mnonstop
Frontier Logo
6:00 pm - 7:59 pmDCA-DEN
3h 59mnonstop
$77Frontier
Find Deal
Wed, Nov 5 - Sat, Nov 8
Frontier Logo
6:38 am - 12:04 pmDEN-DCA
3h 26mnonstop
Frontier Logo
7:00 am - 9:08 amDCA-DEN
4h 08mnonstop
$78Frontier
Find Deal
Fri, Oct 24 - Tue, Oct 28
Frontier Logo
4:30 pm - 9:59 pmDEN-DCA
3h 29mnonstop
Frontier Logo
6:00 pm - 7:59 pmDCA-DEN
3h 59mnonstop
$82Frontier
Find Deal
Tue, Sep 30 - Sat, Oct 11
Frontier Logo
4:34 pm - 9:59 pmDEN-DCA
3h 25mnonstop
Frontier Logo
7:00 am - 9:08 amDCA-DEN
4h 08mnonstop
$83Frontier
Find Deal
Thu, Oct 9 - Sun, Oct 12
Southwest Logo
5:45 pm - 11:05 pmDEN-IAD
3h 20mnonstop
Southwest Logo
7:40 am - 9:30 amIAD-DEN
3h 50mnonstop
$177Southwest
Find Deal
Wed, Oct 15 - Tue, Oct 21
United Airlines Logo
8:01 am - 1:28 pmDEN-IAD
3h 27mnonstop
United Airlines Logo
5:36 pm - 7:36 pmIAD-DEN
4h 00mnonstop
$184United Airlines
Find Deal
Sat, Sep 27 - Sat, Sep 27
United Airlines Logo
11:59 pm - 5:22 amDEN-IAD
3h 23mnonstop
United Airlines Logo
10:10 pm - 12:15 amIAD-DEN
4h 05mnonstop
$188United Airlines
Find Deal
Wed, Oct 22 - Sun, Oct 26
American Airlines Logo
11:59 pm - 8:46 amDEN-IAD
6h 47m1 stop
American Airlines Logo
5:40 pm - 10:09 pmIAD-DEN
6h 29m1 stop
$197American Airlines
Find Deal
Wed, Sep 17 - Sat, Sep 20
Southwest Logo
5:30 pm - 10:50 pmDEN-IAD
3h 20mnonstop
Southwest Logo
7:40 am - 9:15 amIAD-DEN
3h 35mnonstop
$199Southwest
Find Deal
Fri, Sep 26 - Sun, Sep 28
American Airlines Logo
11:59 pm - 8:46 amDEN-IAD
6h 47m1 stop
American Airlines Logo
2:21 pm - 10:09 pmIAD-DEN
9h 48m2 stops
$202American Airlines
Find Deal
Wed, Sep 17 - Sat, Sep 20

Frontier flights from Denver to Washington, D.C.

Our best Frontier deals on Denver to Washington, D.C. flight tickets
Frontier
Nov 5
DEN6:45 amDenver Intl
3h 26m
DCA12:11 pmWashington, D.C. Reagan-National
Nov 8
DCA6:00 pmWashington, D.C. Reagan-National
3h 59m
DEN7:59 pmDenver Intl
$77
Find similar
Frontier
Oct 24
DEN6:38 amDenver Intl
3h 26m
DCA12:04 pmWashington, D.C. Reagan-National
Oct 28
DCA7:00 amWashington, D.C. Reagan-National
4h 08m
DEN9:08 amDenver Intl
$78
Find similar
Frontier
Sep 30
DEN4:30 pmDenver Intl
3h 29m
DCA9:59 pmWashington, D.C. Reagan-National
Oct 11
DCA6:00 pmWashington, D.C. Reagan-National
3h 59m
DEN7:59 pmDenver Intl
$82
Find similar

Southwest flights from Denver to Washington, D.C.

Our best Southwest deals on Denver to Washington, D.C. flight tickets
Southwest
Oct 15
DEN5:45 pmDenver Intl
3h 20m
IAD11:05 pmWashington, D.C. Dulles Intl
Oct 21
IAD7:40 amWashington, D.C. Dulles Intl
3h 50m
DEN9:30 amDenver Intl
$177
Find similar
Southwest
Sep 26
DEN5:30 pmDenver Intl
3h 20m
IAD10:50 pmWashington, D.C. Dulles Intl
Sep 28
IAD7:40 amWashington, D.C. Dulles Intl
3h 35m
DEN9:15 amDenver Intl
$199
Find similar
Southwest
Sep 29
DEN8:00 amDenver Intl
3h 20m
IAD1:20 pmWashington, D.C. Dulles Intl
Oct 3
IAD7:45 pmWashington, D.C. Dulles Intl
3h 50m
DEN9:35 pmDenver Intl
$208
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Washington, D.C. 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 August 15, 2025.
Use the filters below to find and compare flights from Denver to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Wed 11/5

6:45 am-12:11 pm

Nonstop3h 26m

Washington, D.C. Reagan-National

Sat 11/8

6:00 pm-7:59 pm

Nonstop3h 59m

$77

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Fri 10/24

6:38 am-12:04 pm

Nonstop3h 26m

Washington, D.C. Reagan-National

Tue 10/28

7:00 am-9:08 am

Nonstop4h 08m

$78

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 9/30

4:30 pm-9:59 pm

Nonstop3h 29m

Washington, D.C. Reagan-National

Sat 10/11

6:00 pm-7:59 pm

Nonstop3h 59m

$82

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Thu 10/9

4:34 pm-9:59 pm

Nonstop3h 25m

Washington, D.C. Reagan-National

Sun 10/12

7:00 am-9:08 am

Nonstop4h 08m

$83

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 10/15

5:45 pm-11:05 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

Tue 10/21

7:40 am-9:30 am

Nonstop3h 50m

$177

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 9/27

8:01 am-1:28 pm

Nonstop3h 27m

Washington, D.C. Dulles Intl

Sat 9/27

5:36 pm-7:36 pm

Nonstop4h 00m

$184

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 10/22

11:59 pm-5:22 am

Nonstop3h 23m

Washington, D.C. Dulles Intl

Sun 10/26

10:10 pm-12:15 am

Nonstop4h 05m

$188

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 9/17

11:59 pm-8:46 am

1 stop6h 47m

Washington, D.C. Dulles Intl

Sat 9/20

5:40 pm-10:09 pm

1 stop6h 29m

$197

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 9/26

5:30 pm-10:50 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

Sun 9/28

7:40 am-9:15 am

Nonstop3h 35m

$199

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 9/17

11:59 pm-8:46 am

1 stop6h 47m

Washington, D.C. Dulles Intl

Sat 9/20

2:21 pm-10:09 pm

2 stops9h 48m

$202

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.

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.?

The month of February is, on average, the cheapest month to fly to Washington, D.C. from Denver, with most prices found around $237. If you’re not able to fly to Washington, D.C. in February, then July is your next best option. Flight prices from Denver to Washington, D.C. during July average around $237.

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

On average, the least expensive day to fly to Washington, D.C. from Denver is on a Friday. momondo users have found tickets for Friday departures for as low as $322. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Denver to Washington, D.C. for around $420.

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

In the morning is the cheapest time of day to fly from Denver to Washington, D.C. when you can find flight prices for as low as $314. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $590. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

You are more likely to see cheaper flights to Washington, D.C. from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $339 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from Denver for as low as $297 on momondo.

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

There are 4 cabin classes available to choose from on Denver Intl to Washington, D.C. 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. flights?

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

How have Denver to Washington, D.C. flight prices changed over time?

As of August 2025, prices for Denver to Washington, D.C. flights are approximately 37% more expensive when compared to flights at the same time last year.

When to book flights from Denver to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Washington, D.C. 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. (DEN to WAS) flight deals and tips

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

Best Price Found

$41

Fastest flight time

3h 10m

Direct flights

Every day

Airports in Washington, D.C.

3 airports
The best one-way flight to Washington, D.C. from Denver in the past 72 hours is $41. The best round-trip flight deal from Denver to Washington, D.C. found on momondo in the last 72 hours is $77.
The fastest flight from Denver to Washington, D.C. takes 3h 10m
Direct flights go from Denver to Washington, D.C. every day.
There are 3 airports near Washington, D.C.: Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)
Search flight deals

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

    Denver Intl and Washington, D.C. are 1487.9 mi apart from one another. By plane, this route typically takes 3h 20m.

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

    Prices for flights from Denver Intl Airport to Washington, D.C. are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Washington, D.C..

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

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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.?

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

Best airlines flying from Denver to Washington, D.C.

Compare and see reviews for airlines that fly from Denver to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $101Free CancellationRating
5.8
3,217 reviews
Search Frontier flights
DeltaPriceFrom $148Free CancellationRating
8.0
7,982 reviews
Search Delta flights
American AirlinesPriceFrom $166Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $171Free CancellationRating
7.4
8,915 reviews
Search United Airlines flights
SouthwestPriceFrom $181Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

  • Southwest Flights From Denver to Washington, D.C.

    Southwest flight deals from Denver to Washington, D.C. start from $181 round-trip. Over the 22 Southwest flights for this route in a normal week, average airfare is usually $345 round-trip - but some users have found much cheaper deals with momondo.

  • United Airlines Flights From Denver to Washington, D.C.

    The best United Airlines deal for Denver to Washington, D.C. flight tickets found on momondo in the last 72 hours was $171, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $381 round-trip. United Airlines operates 74 flights out of Denver into Washington, D.C. in an average week, so prices vary by time and availability. 8,915 United Airlines reviews by users on momondo have scored the airline at 7.4/10.

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
Arlington
National Harbor
Woodbridge
Tysons
Laurel
Silver Spring
Waldorf
Fredericksburg
Colonial Beach
Manassas
Rockville
Towson
Gaithersburg
Fairfax
Reston
Glen Burnie
Linthicum Heights
Springfield

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Denver to Washington, D.C.. momondo saves you time and could save you money on your trip.

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

Flights from Denver to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

Price alerts on flights to Washington, D.C. from Denver are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Washington, D.C. 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.
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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport