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Cheap flights from Denver to Washington, D.C. from $89

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 8/30. 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

United Airlines Logo
8:01 am - 1:28 pmDEN-IAD
3h 27mnonstop
United Airlines Logo
4:00 pm - 5:53 pmIAD-DEN
3h 53mnonstop
$172United Airlines
Find Deal
mar., oct. 21 - mar., oct. 21
Southwest Logo
5:30 pm - 10:50 pmDEN-IAD
3h 20mnonstop
Southwest Logo
5:05 pm - 6:55 pmIAD-DEN
3h 50mnonstop
$177Southwest
Find Deal
sáb., ago. 30 - sáb., sep. 6
Southwest Logo
8:20 am - 1:40 pmDEN-IAD
3h 20mnonstop
Southwest Logo
6:50 pm - 8:40 pmIAD-DEN
3h 50mnonstop
$188Southwest
Find Deal
mar., sep. 9 - vie., sep. 12
American Airlines Logo
11:59 pm - 8:43 amDEN-IAD
6h 44m1 stop
American Airlines Logo
5:40 pm - 10:09 pmIAD-DEN
6h 29m1 stop
$195American Airlines
Find Deal
sáb., sep. 20 - sáb., sep. 27
Frontier Logo
12:45 pm - 9:34 pmDEN-IAD
6h 49m1 stop
Frontier Logo
8:00 am - 1:57 pmIAD-DEN
7h 57m1 stop
$196Frontier
Find Deal
mar., ago. 19 - sáb., ago. 23
American Airlines Logo
7:20 am - 4:50 pmDEN-IAD
7h 30m1 stop
American Airlines Logo
11:47 am - 3:45 pmIAD-DEN
5h 58m1 stop
$197American Airlines
Find Deal
mié., sep. 17 - sáb., sep. 20
Frontier Logo
12:45 pm - 9:39 pmDEN-IAD
6h 54m1 stop
Frontier Logo
8:00 am - 1:57 pmIAD-DEN
7h 57m1 stop
$206Frontier
Find Deal
mié., ago. 20 - sáb., ago. 23
United Airlines Logo
10:12 am - 3:34 pmDEN-IAD
3h 22mnonstop
United Airlines Logo
10:14 pm - 11:59 pmIAD-DEN
3h 45mnonstop
$217United Airlines
Find Deal
mar., ago. 26 - mar., ago. 26
Delta Logo
12:50 am - 9:16 amDEN-IAD
6h 26m1 stop
Delta Logo
5:18 am - 9:00 amIAD-DEN
5h 42m1 stop
$237Delta
Find Deal
jue., oct. 23 - dom., nov. 2
Delta Logo
12:45 am - 8:59 amDEN-IAD
6h 14m1 stop
Delta Logo
5:25 pm - 10:55 pmIAD-DEN
7h 30m1 stop
$239Delta
Find Deal
jue., ago. 21 - lun., ago. 25

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
Aug 19
DEN12:45 pmDenver Intl
6h 49m
1 stop
IAD9:34 pmWashington, D.C. Dulles Intl
Aug 23
IAD8:00 amWashington, D.C. Dulles Intl
7h 57m
1 stop
DEN1:57 pmDenver Intl
$196
Find similar
Frontier
Aug 20
DEN12:45 pmDenver Intl
6h 54m
1 stop
IAD9:39 pmWashington, D.C. Dulles Intl
Aug 23
IAD8:00 amWashington, D.C. Dulles Intl
7h 57m
1 stop
DEN1:57 pmDenver Intl
$206
Find similar
Frontier
Aug 12
DEN10:29 pmDenver Intl
30h 05m
1 stop
IAD6:34 amWashington, D.C. Dulles Intl
Aug 19
IAD6:14 amWashington, D.C. Dulles Intl
23h 46m
1 stop
DEN4:00 amDenver Intl
$218
Find similar

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

Our best American Airlines deals on Denver to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines
Sep 20
DEN11:59 pmDenver Intl
6h 44m
1 stop
IAD8:43 amWashington, D.C. Dulles Intl
Sep 27
IAD5:40 pmWashington, D.C. Dulles Intl
6h 29m
1 stop
DEN10:09 pmDenver Intl
$195
Find similar
American Airlines
Sep 17
DEN7:20 amDenver Intl
7h 30m
1 stop
IAD4:50 pmWashington, D.C. Dulles Intl
Sep 20
IAD11:47 amWashington, D.C. Dulles Intl
5h 58m
1 stop
DEN3:45 pmDenver Intl
$197
Find similar
American Airlines
Sep 17
DEN7:16 amDenver Intl
9h 35m
2 stops
IAD6:51 pmWashington, D.C. Dulles Intl
Sep 20
IAD2:21 pmWashington, D.C. Dulles Intl
7h 04m
1 stop
DEN7:25 pmDenver Intl
$202
Find similar

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 julio 31, 2025.
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

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mar. 10/21

8:01 am-1:28 pm

Nonstop3h 27m

Washington, D.C. Dulles Intl

mar. 10/21

4:00 pm-5:53 pm

Nonstop3h 53m

$172

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

sáb. 8/30

5:30 pm-10:50 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

sáb. 9/6

5:05 pm-6:55 pm

Nonstop3h 50m

$177

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mar. 9/9

8:20 am-1:40 pm

Nonstop3h 20m

Washington, D.C. Dulles Intl

vie. 9/12

6:50 pm-8:40 pm

Nonstop3h 50m

$188

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

sáb. 9/20

11:59 pm-8:43 am

1 stop6h 44m

Washington, D.C. Dulles Intl

sáb. 9/27

5:40 pm-10:09 pm

1 stop6h 29m

$195

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mar. 8/19

12:45 pm-9:34 pm

1 stop6h 49m

Washington, D.C. Dulles Intl

sáb. 8/23

8:00 am-1:57 pm

1 stop7h 57m

$196

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mié. 9/17

7:20 am-4:50 pm

1 stop7h 30m

Washington, D.C. Dulles Intl

sáb. 9/20

11:47 am-3:45 pm

1 stop5h 58m

$197

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mié. 8/20

12:45 pm-9:39 pm

1 stop6h 54m

Washington, D.C. Dulles Intl

sáb. 8/23

8:00 am-1:57 pm

1 stop7h 57m

$206

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

mar. 8/26

10:12 am-3:34 pm

Nonstop3h 22m

Washington, D.C. Dulles Intl

mar. 8/26

10:14 pm-11:59 pm

Nonstop3h 45m

$217

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

jue. 10/23

12:50 am-9:16 am

1 stop6h 26m

Washington, D.C. Dulles Intl

dom. 11/2

5:18 am-9:00 am

1 stop5h 42m

$237

DenverWashington, D.C.

DEN - IAD

DENIAD

Denver Intl

jue. 8/21

12:45 am-8:59 am

1 stop6h 14m

Washington, D.C. Dulles Intl

lun. 8/25

5:25 pm-10:55 pm

1 stop7h 30m

$239

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

In general, January 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 $308. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $309.

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

Our data shows that Friday 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 $445. When flying out on a Saturday, 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 $616.

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 $455 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 $605 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 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 $338 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 $286 on momondo.

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

There are 4 cabin classes available to choose from on Denver Intl to Washington, D.C. Dulles Intl 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. 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 July 2025, prices for Denver to Washington, D.C. Dulles Intl Airport flights are approximately 19% cheaper 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

$89

Fastest flight time

3h 10m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Denver in the past 72 hours is $89. The best round-trip flight deal from Denver to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $172.
The fastest flight from Denver to Washington, D.C. Dulles Intl Airport takes 3h 10m
Direct flights go from Denver to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

  • 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 20m.

  • 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 $116Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
DeltaPriceFrom $144Free CancellationRating
8.0
7,981 reviews
Search Delta flights
SouthwestPriceFrom $190Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $214Free CancellationRating
7.4
8,900 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 9 times per week, with 4,246 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Denver to Washington, D.C. Dulles Intl Airport in the last 72 hours was $190 (round-trip), much lower than the average airfare cost of $309 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, 8,900 ratings). United Airlines flies from Denver to Washington, D.C. Dulles Intl Airport around 49 times per week, with deals starting from $214 round-trip and rising to an average price of around $355.

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
Winchester
Woodbridge
Laurel
Tysons
Silver Spring
Waldorf
Fredericksburg
Manassas
Harpers Ferry
Towson
Rockville
Colonial Beach
Gaithersburg
Fairfax
Reston
Glen Burnie

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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