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Cheap flights from Denver to Washington, D.C. from $113

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 5/27. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:00 am - 11:09 pm
DEN
-
IAD
11h 09m
1 stop
Frontier Logo
11:07 am - 10:24 pm
IAD
-
DEN
13h 17m
1 stop
$210Frontier
Wed, May 27 - Tue, Jun 2
Multiple Airlines Logo
8:22 am - 3:46 pm
DEN
-
IAD
5h 24m
1 stop
Multiple Airlines Logo
7:45 am - 2:04 pm
IAD
-
DEN
8h 19m
1 stop
$211Multiple Airlines
Fri, May 29 - Tue, Jun 2
Frontier Logo
6:30 am - 4:20 pm
DEN
-
IAD
7h 50m
1 stop
Frontier Logo
11:17 am - 10:16 pm
IAD
-
DEN
12h 59m
1 stop
$213Frontier
Tue, Jun 9 - Fri, Jun 12
Frontier Logo
9:54 pm - 12:41 pm
DEN
-
IAD
12h 47m
1 stop
Frontier Logo
11:07 am - 10:24 pm
IAD
-
DEN
13h 17m
1 stop
$214Frontier
Fri, May 29 - Mon, Jun 1
Multiple Airlines Logo
8:22 am - 3:46 pm
DEN
-
IAD
5h 24m
1 stop
Multiple Airlines Logo
7:45 am - 2:04 pm
IAD
-
DEN
8h 19m
1 stop
$215Multiple Airlines
Fri, May 29 - Tue, Jun 2
Multiple Airlines Logo
8:22 am - 3:46 pm
DEN
-
IAD
5h 24m
1 stop
Multiple Airlines Logo
7:45 am - 2:04 pm
IAD
-
DEN
8h 19m
1 stop
$216Multiple Airlines
Fri, May 29 - Mon, Jun 1
Multiple Airlines Logo
8:22 am - 3:46 pm
DEN
-
IAD
5h 24m
1 stop
Multiple Airlines Logo
7:45 am - 2:04 pm
IAD
-
DEN
8h 19m
1 stop
$217Multiple Airlines
Fri, May 29 - Tue, Jun 2
Frontier Logo
11:54 pm - 5:27 pm
DEN
-
IAD
15h 33m
1 stop
Frontier Logo
9:12 am - 3:25 am
IAD
-
DEN
20h 13m
1 stop
$218Frontier
Thu, May 28 - Sun, May 31
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
$220Frontier
Wed, May 27 - Tue, Jun 2
Frontier Logo
11:54 pm - 10:12 am
DEN
-
IAD
8h 18m
1 stop
Frontier Logo
3:43 pm - 11:01 pm
IAD
-
DEN
9h 18m
1 stop
$221Frontier
Thu, Jun 4 - Tue, Jun 9

Frontier flights from Denver to Washington, D.C. Dulles Intl Airport

Our best Frontier deals on Denver to Washington, D.C. Dulles Intl Airport flight tickets
Frontier
May 27
DEN10:00 amDenver Intl
11h 09m
1 stop
IAD11:09 pmWashington, D.C. Dulles Intl
Jun 2
IAD11:07 amWashington, D.C. Dulles Intl
13h 17m
1 stop
DEN10:24 pmDenver Intl
$210
Frontier
Jun 9
DEN6:30 amDenver Intl
7h 50m
1 stop
IAD4:20 pmWashington, D.C. Dulles Intl
Jun 12
IAD11:17 amWashington, D.C. Dulles Intl
12h 59m
1 stop
DEN10:16 pmDenver Intl
$213
Frontier
May 29
DEN9:54 pmDenver Intl
12h 47m
1 stop
IAD12:41 pmWashington, D.C. Dulles Intl
Jun 1
IAD11:07 amWashington, D.C. Dulles Intl
13h 17m
1 stop
DEN10:24 pmDenver Intl
$214

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Washington, D.C. Dulles Intl 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 May 11, 2026.
Use the filters below to find and compare flights from Denver to Washington, D.C. Dulles Intl Airport 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 5/27

10:00 am-11:09 pm

1 stop11h 09m

Washington, D.C. Dulles Intl

Tue 6/2

11:07 am-10:24 pm

1 stop13h 17m

$210
Quickest round-trip

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

Tue 6/2

7:45 am-2:04 pm

1 stop8h 19m

$211

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

Fri 6/12

11:17 am-10:16 pm

1 stop12h 59m

$213

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Fri 5/29

9:54 pm-12:41 pm

1 stop12h 47m

Washington, D.C. Dulles Intl

Mon 6/1

11:07 am-10:24 pm

1 stop13h 17m

$214

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

Tue 6/2

7:45 am-2:04 pm

1 stop8h 19m

$215

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

7:45 am-2:04 pm

1 stop8h 19m

$216

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

Tue 6/2

7:45 am-2:04 pm

1 stop8h 19m

$217

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Thu 5/28

11:54 pm-5:27 pm

1 stop15h 33m

Washington, D.C. Dulles Intl

Sun 5/31

9:12 am-3:25 am

1 stop20h 13m

$218

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

11:07 am-10:24 pm

1 stop13h 17m

$220

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

Thu 6/4

11:54 pm-10:12 am

1 stop8h 18m

Washington, D.C. Dulles Intl

Tue 6/9

3:43 pm-11:01 pm

1 stop9h 18m

$221

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. Dulles Intl 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. Dulles Intl Airport?

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

In general, August is the cheapest month to fly from Denver to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $287. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of August, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $303.

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

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $468. 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. Dulles Intl Airport for around $674.

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

Flying to Washington, D.C. Dulles Intl Airport from Denver in the morning is the least expensive time of day to depart. momondo users have found prices as low as $515 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $660 on average. Flights to Washington, D.C. Dulles Intl Airport from Denver in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight from Denver to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $367 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Denver for as low as $291 on momondo.

Can stopping save me money on Denver to Washington, D.C. Dulles Intl Airport flights?

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

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

As of May 2026, prices for Denver to Washington, D.C. Dulles Intl Airport flights are approximately 19% more expensive when compared to flights at the same time last year.

When to book flights from Denver to Washington, D.C. Dulles Intl Airport

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

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

Best Price Found

$241

Fastest flight time

3h 15m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Denver in the past 72 hours is $241. The best round-trip flight deal from Denver to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $471.
The fastest flight from Denver to Washington, D.C. Dulles Intl Airport takes 3h 15m
Direct flights go from Denver to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

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

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

    A flight from Denver Intl to Washington, D.C. Dulles Intl will travel around 1465.5 mi. A reasonable flight in good conditions will take 3h 15m.

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

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

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

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

    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. Dulles Intl Airport.

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

    The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Denver to Washington, D.C. Dulles Intl Airport?

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

Best airlines flying from Denver to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Denver to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $111Free CancellationRating
5.6
2,955 reviews
Search Frontier flights
SouthwestPriceFrom $177Free CancellationRating
7.9
4,301 reviews
Search Southwest flights
United AirlinesPriceFrom $206Free CancellationRating
7.4
9,698 reviews
Search United Airlines flights

  • Southwest Flights From Denver to Washington, D.C. Dulles Intl Airport

    Southwest flies from Denver to Washington, D.C. Dulles Intl Airport around 11 times per week, with 4,301 momondo users rating the airline 7.9/10. The cheapest Southwest deal from Denver to Washington, D.C. Dulles Intl Airport in the last 72 hours was $177 (round-trip), much lower than the average airfare cost of $303 for Southwest flights on this route.

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

    Another popular option for Denver to Washington, D.C. Dulles Intl Airport flights is United Airlines (7.4/10, 9,698 ratings). United Airlines flies from Denver to Washington, D.C. Dulles Intl Airport around 58 times per week, with deals starting from $206 round-trip and rising to an average price of around $404.

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
Winchester
Waldorf
Woodbridge
Laurel
Gaithersburg
Colonial Beach
Towson
Fredericksburg
Silver Spring
Rockville
Manassas
Sterling
Linthicum Heights
Tysons
Bethesda
Springfield

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?

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?

Yes momondo offers price alerts on flights to Washington, D.C. from Denver. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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