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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 8/19. 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

Enter your travel dates to find the best prices.
Frontier Logo
9:58 am - 11:13 pm
DEN
-
IAD
11h 15m
1 stop
Frontier Logo
8:57 pm - 9:44 pm
IAD
-
DEN
26h 47m
2 stops
$200Frontier
Wed, Aug 12 - Sun, Aug 16
Frontier Logo
11:25 am - 4:59 pm
DEN
-
DCA
3h 34mnonstop
Frontier Logo
6:00 pm - 8:07 pm
DCA
-
DEN
4h 07mnonstop
$203Frontier
Tue, Aug 11 - Sat, Aug 15
Frontier Logo
11:54 pm - 10:12 am
DEN
-
IAD
8h 18m
1 stop
Frontier Logo
11:07 am - 10:24 pm
IAD
-
DEN
13h 17m
1 stop
$205Frontier
Mon, May 18 - Thu, May 28
Frontier Logo
6:30 am - 4:21 pm
DEN
-
IAD
7h 51m
1 stop
Frontier Logo
6:26 pm - 11:01 pm
IAD
-
DEN
30h 35m
2 stops
$206Frontier
Sat, Jun 6 - Wed, Jun 10
Frontier Logo
6:30 am - 4:20 pm
DEN
-
IAD
7h 50m
1 stop
Frontier Logo
11:24 am - 10:16 pm
IAD
-
DEN
12h 52m
1 stop
$207Frontier
Tue, Jun 9 - Thu, Jun 11
Frontier Logo
6:03 am - 10:13 am
DEN
-
IAD
26h 10m
2 stops
Frontier Logo
7:30 pm - 5:51 pm
IAD
-
DEN
24h 21m
1 stop
$208Frontier
Tue, Jul 7 - Tue, Jul 14
Frontier Logo
11:54 pm - 10:12 am
DEN
-
IAD
8h 18m
1 stop
Frontier Logo
7:45 am - 2:04 pm
IAD
-
DEN
8h 19m
1 stop
$210Frontier
Wed, May 27 - Tue, Jun 2
Frontier Logo
11:54 pm - 10:12 am
DEN
-
IAD
8h 18m
1 stop
Frontier Logo
8:47 pm - 11:01 pm
IAD
-
DEN
28h 14m
2 stops
$211Frontier
Tue, Jun 2 - Thu, Jun 4
Frontier Logo
7:00 am - 10:16 am
DEN
-
IAD
25h 16m
2 stops
Frontier Logo
7:27 pm - 9:27 am
IAD
-
DEN
16h 00m
1 stop
$213Frontier
Wed, Sep 2 - Tue, Sep 8
Multiple Airlines Logo
8:22 am - 3:46 pm
DEN
-
IAD
5h 24m
1 stop
Multiple Airlines Logo
8:47 pm - 9:05 am
IAD
-
DEN
14h 18m
1 stop
$214Multiple Airlines
Fri, May 29 - Mon, Jun 1

Frontier flights from Denver to Washington, D.C.

Our best Frontier deals on Denver to Washington, D.C. flight tickets
Frontier
Aug 12
DEN9:58 amDenver Intl
11h 15m
1 stop
IAD11:13 pmWashington, D.C. Dulles Intl
Aug 16
IAD8:57 pmWashington, D.C. Dulles Intl
26h 47m
2 stops
DEN9:44 pmDenver Intl
$200
Frontier
Aug 11
DEN11:25 amDenver Intl
3h 34m
DCA4:59 pmWashington, D.C. Reagan-National
Aug 15
DCA6:00 pmWashington, D.C. Reagan-National
4h 07m
DEN8:07 pmDenver Intl
$203
Frontier
May 18
DEN11:54 pmDenver Intl
8h 18m
1 stop
IAD10:12 amWashington, D.C. Dulles Intl
May 28
IAD11:07 amWashington, D.C. Dulles Intl
13h 17m
1 stop
DEN10:24 pmDenver Intl
$205

American Airlines flights from Denver to Washington, D.C.

Our best American Airlines deals on Denver to Washington, D.C. flight tickets
American Airlines
May 18
DEN11:59 pmDenver Intl
8h 03m
1 stop
IAD10:02 amWashington, D.C. Dulles Intl
May 19
IAD3:53 pmWashington, D.C. Dulles Intl
7h 44m
1 stop
DEN9:37 pmDenver Intl
$387
American Airlines
May 16
DEN1:19 pmDenver Intl
8h 40m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
May 27
IAD6:20 amWashington, D.C. Dulles Intl
8h 46m
1 stop
DEN1:06 pmDenver Intl
$426

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 May 8, 2026.
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

Cheapest round-trip

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 8/12

9:58 am-11:13 pm

1 stop11h 15m

Washington, D.C. Dulles Intl

Sun 8/16

8:57 pm-9:44 pm

2 stops26h 47m

$200
Quickest round-trip

DenverWashington, D.C.

DEN - DCA

DENDCA

Denver Intl

Tue 8/11

11:25 am-4:59 pm

Nonstop3h 34m

Washington, D.C. Reagan-National

Sat 8/15

6:00 pm-8:07 pm

Nonstop4h 07m

$203

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Mon 5/18

11:54 pm-10:12 am

1 stop8h 18m

Washington, D.C. Dulles Intl

Thu 5/28

11:07 am-10:24 pm

1 stop13h 17m

$205

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Sat 6/6

6:30 am-4:21 pm

1 stop7h 51m

Washington, D.C. Dulles Intl

Wed 6/10

6:26 pm-11:01 pm

2 stops30h 35m

$206

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 6/9

6:30 am-4:20 pm

1 stop7h 50m

Washington, D.C. Dulles Intl

Thu 6/11

11:24 am-10:16 pm

1 stop12h 52m

$207

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 7/7

6:03 am-10:13 am

2 stops26h 10m

Washington, D.C. Dulles Intl

Tue 7/14

7:30 pm-5:51 pm

1 stop24h 21m

$208

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 5/27

11:54 pm-10:12 am

1 stop8h 18m

Washington, D.C. Dulles Intl

Tue 6/2

7:45 am-2:04 pm

1 stop8h 19m

$210

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Tue 6/2

11:54 pm-10:12 am

1 stop8h 18m

Washington, D.C. Dulles Intl

Thu 6/4

8:47 pm-11:01 pm

2 stops28h 14m

$211

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Wed 9/2

7:00 am-10:16 am

2 stops25h 16m

Washington, D.C. Dulles Intl

Tue 9/8

7:27 pm-9:27 am

1 stop16h 00m

$213

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 5/29

8:22 am-3:46 pm

1 stop5h 24m

Washington, D.C. Dulles Intl

Mon 6/1

8:47 pm-9:05 am

1 stop14h 18m

$214

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

What is the cheapest month to fly to Washington, D.C.?

The month of January is, on average, the cheapest month to fly to Washington, D.C. from Denver, with most prices found around $58. If you’re not able to fly to Washington, D.C. in January, then August is your next best option. Flight prices from Denver to Washington, D.C. during August average around $88.

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 Thursday. momondo users have found tickets for Thursday departures for as low as $330. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Denver to Washington, D.C. for around $467.

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 $347. 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 $651. 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 from Denver 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 $360 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 $291 on momondo.

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 May 2026, prices for Denver to Washington, D.C. flights are approximately 144% 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

$142

Fastest flight time

3h 15m

Direct flights

Every day

Airports in Washington, D.C.

2 airports
The best one-way flight to Washington, D.C. from Denver in the past 72 hours is $142. The best round-trip flight deal from Denver to Washington, D.C. found on momondo in the last 72 hours is $259.
The fastest flight from Denver to Washington, D.C. takes 3h 15m
Direct flights go from Denver to Washington, D.C. every day.
There are 2 airports in Washington, D.C.. From Denver there are direct flights to Washington, D.C. Reagan-National (DCA), Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD).
Search flight deals

Frequently asked questions about flying from Denver to Washington, D.C.

  • 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 15m.

  • 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 $99Free CancellationRating
5.6
2,962 reviews
Search Frontier flights
DeltaPriceFrom $118Free CancellationRating
7.9
8,456 reviews
Search Delta flights
United AirlinesPriceFrom $165Free CancellationRating
7.4
9,694 reviews
Search United Airlines flights
SouthwestPriceFrom $177Free CancellationRating
7.9
4,302 reviews
Search Southwest flights
American AirlinesPriceFrom $188Free CancellationRating
7.1
11,667 reviews
Search American Airlines flights

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

    Southwest flight deals from Denver to Washington, D.C. start from $177 round-trip. Over the 13 Southwest flights for this route in a normal week, average airfare is usually $361 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 $165, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $426 round-trip. United Airlines operates 68 flights out of Denver into Washington, D.C. in an average week, so prices vary by time and availability. 9,694 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
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Laurel
Colonial Beach
Gaithersburg
Towson
Fredericksburg
Silver Spring
Rockville
Manassas
Linthicum Heights
Tysons
Bethesda
Springfield
Fairfax
College Park

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