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Cheap flights from Washington, D.C. Dulles Intl Airport to Denver from $64

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Denver departing on 1/25. 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 Washington, D.C. Dulles Intl Airport to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:33 pm - 12:19 pm
IAD
-
DEN
20h 46m1 stop
Frontier Logo
1:50 pm - 10:44 am
DEN
-
IAD
18h 54m1 stop
$132Frontier
Fri, Jan 30 - Fri, Feb 6
Frontier Logo
5:33 pm - 12:19 pm
IAD
-
DEN
20h 46m1 stop
Frontier Logo
9:05 pm - 9:55 am
DEN
-
IAD
10h 50m1 stop
$133Frontier
Mon, Feb 2 - Thu, Feb 5
Frontier Logo
6:00 am - 12:21 pm
IAD
-
DEN
8h 21m1 stop
Frontier Logo
8:28 am - 8:04 pm
DEN
-
IAD
9h 36m1 stop
$134Frontier
Tue, Jan 13 - Thu, Jan 15
Frontier Logo
6:00 am - 12:21 pm
IAD
-
DEN
8h 21m1 stop
Frontier Logo
12:05 am - 11:43 am
DEN
-
IAD
9h 38m1 stop
$135Frontier
Sun, Jan 11 - Mon, Jan 12
Frontier Logo
10:49 am - 3:27 pm
IAD
-
DEN
30h 38m1 stop
Frontier Logo
11:25 pm - 8:53 pm
DEN
-
IAD
19h 28m1 stop
$136Frontier
Fri, Feb 20 - Sun, Mar 1
Frontier Logo
5:33 pm - 12:19 pm
IAD
-
DEN
20h 46m1 stop
Frontier Logo
7:59 pm - 9:55 am
DEN
-
IAD
11h 56m1 stop
$141Frontier
Mon, Feb 2 - Sat, Feb 7
Frontier Logo
5:37 pm - 9:45 pm
IAD
-
DEN
30h 08m1 stop
Frontier Logo
6:00 am - 4:28 pm
DEN
-
IAD
8h 28m1 stop
$143Frontier
Thu, Jan 22 - Thu, Jan 29
Frontier Logo
6:00 am - 9:38 pm
IAD
-
DEN
17h 38m1 stop
Frontier Logo
6:00 am - 4:46 pm
DEN
-
IAD
8h 46m1 stop
$145Frontier
Thu, Jan 8 - Fri, Jan 9
Frontier Logo
5:20 pm - 9:38 pm
IAD
-
DEN
30h 18m1 stop
Frontier Logo
12:59 am - 4:32 pm
DEN
-
IAD
13h 33m1 stop
$149Frontier
Sun, Feb 22 - Thu, Feb 26
Frontier Logo
1:46 pm - 3:51 pm
IAD
-
DEN
28h 05m1 stop
Frontier Logo
9:20 pm - 4:55 pm
DEN
-
IAD
17h 35m2 stops
$152Frontier
Sun, Jan 11 - Sat, Jan 17

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

Our best Frontier deals on Washington, D.C. Dulles Intl Airport to Denver flight tickets
Frontier
Jan 30
IAD5:33 pmWashington, D.C. Dulles Intl
20h 46m
1 stop
DEN12:19 pmDenver Intl
Feb 6
DEN1:50 pmDenver Intl
18h 54m
1 stop
IAD10:44 amWashington, D.C. Dulles Intl
$132
Find similar
Frontier
Feb 2
IAD5:33 pmWashington, D.C. Dulles Intl
20h 46m
1 stop
DEN12:19 pmDenver Intl
Feb 5
DEN9:05 pmDenver Intl
10h 50m
1 stop
IAD9:55 amWashington, D.C. Dulles Intl
$133
Find similar
Frontier
Jan 13
IAD6:00 amWashington, D.C. Dulles Intl
8h 21m
1 stop
DEN12:21 pmDenver Intl
Jan 15
DEN8:28 amDenver Intl
9h 36m
1 stop
IAD8:04 pmWashington, D.C. Dulles Intl
$134
Find similar

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

Our best Southwest deals on Washington, D.C. Dulles Intl Airport to Denver flight tickets
Southwest
Jan 10
IAD3:45 pmWashington, D.C. Dulles Intl
4h 05m
DEN5:50 pmDenver Intl
Jan 17
DEN5:00 pmDenver Intl
3h 10m
IAD10:10 pmWashington, D.C. Dulles Intl
$163
Find similar
Southwest
Jan 7
IAD5:30 pmWashington, D.C. Dulles Intl
4h 05m
DEN7:35 pmDenver Intl
Jan 13
DEN4:45 pmDenver Intl
3h 10m
IAD9:55 pmWashington, D.C. Dulles Intl
$170
Find similar
Southwest
Jan 17
IAD3:45 pmWashington, D.C. Dulles Intl
4h 05m
DEN5:50 pmDenver Intl
Jan 24
DEN5:50 amDenver Intl
7h 05m
1 stop
IAD2:55 pmWashington, D.C. Dulles Intl
$180
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Denver 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 December 4, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 1/30

5:33 pm-12:19 pm

1 stop20h 46m

Denver Intl

Fri 2/6

1:50 pm-10:44 am

1 stop18h 54m

$132

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Mon 2/2

5:33 pm-12:19 pm

1 stop20h 46m

Denver Intl

Thu 2/5

9:05 pm-9:55 am

1 stop10h 50m

$133

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 1/13

6:00 am-12:21 pm

1 stop8h 21m

Denver Intl

Thu 1/15

8:28 am-8:04 pm

1 stop9h 36m

$134

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sun 1/11

6:00 am-12:21 pm

1 stop8h 21m

Denver Intl

Mon 1/12

12:05 am-11:43 am

1 stop9h 38m

$135

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 2/20

10:49 am-3:27 pm

1 stop30h 38m

Denver Intl

Sun 3/1

11:25 pm-8:53 pm

1 stop19h 28m

$136

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Mon 2/2

5:33 pm-12:19 pm

1 stop20h 46m

Denver Intl

Sat 2/7

7:59 pm-9:55 am

1 stop11h 56m

$141

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 1/22

5:37 pm-9:45 pm

1 stop30h 08m

Denver Intl

Thu 1/29

6:00 am-4:28 pm

1 stop8h 28m

$143

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 1/8

6:00 am-9:38 pm

1 stop17h 38m

Denver Intl

Fri 1/9

6:00 am-4:46 pm

1 stop8h 46m

$145

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sun 2/22

5:20 pm-9:38 pm

1 stop30h 18m

Denver Intl

Thu 2/26

12:59 am-4:32 pm

1 stop13h 33m

$149

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sun 1/11

1:46 pm-3:51 pm

1 stop28h 05m

Denver Intl

Sat 1/17

9:20 pm-4:55 pm

2 stops17h 35m

$152

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 Denver from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Denver

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 Washington, D.C. Dulles Intl Airport and Denver?

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Washington, D.C. Dulles Intl Airport is in September. Flight prices, which tend to average around $288, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in September, then you should wait until January to fly from Washington, D.C. Dulles Intl Airport, when ticket prices are also cheap, with an average price of $307.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $304. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $367.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is at noon when flights can be purchased for as low as $266. Flights in the evening are often more expensive with an average ticket price of $368.

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

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

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $341 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Washington, D.C. Dulles Intl Airport for as low as $264 on momondo.

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

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

You could potentially save up to 18% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Denver flight.

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

As of December 2025, prices for Washington, D.C. Dulles Intl Airport to Denver flights are approximately 9% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Denver according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Denver (IAD to DEN) flight deals and tips

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

Best Price Found

$204

Fastest flight time

3h 45m

Direct flights

Every day

Airports in Denver

1 airport
The best one-way flight to Denver from Washington, D.C. Dulles Intl Airport in the past 72 hours is $204. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Denver found on momondo in the last 72 hours is $362.
The fastest flight from Washington, D.C. Dulles Intl Airport to Denver takes 3h 45m
Direct flights go from Washington, D.C. Dulles Intl Airport to Denver every day.
There is 1 airport near Denver: Denver Intl (DEN)
Search flight deals

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

    A flight from Washington, D.C. Dulles Intl to Denver Intl will travel around 1465.5 mi. Flights usually cover this in 4h 05m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to Denver Intl Airport were last updated today.

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

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

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The travel and health documents you'll need for your trip to Denver Intl 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 Denver Intl 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 Washington, D.C. Dulles Intl Airport to Denver?

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

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Denver with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $105Free CancellationRating
5.8
3,091 reviews
Search Frontier flights
American AirlinesPriceFrom $166Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
SouthwestPriceFrom $177Free CancellationRating
8.0
4,250 reviews
Search Southwest flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,011 reviews
Search Delta flights

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

    Southwest flight deals from Washington, D.C. Dulles Intl Airport to Denver start from $177 round-trip. Over the 10 Southwest flights for this route in a normal week, average airfare is usually $299 round-trip - but some users have found much cheaper deals with momondo.

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

    The best United Airlines deal for Washington, D.C. Dulles Intl Airport to Denver flight tickets found on momondo in the last 72 hours was $216, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $372 round-trip. United Airlines operates 44 flights out of Washington, D.C. Dulles Intl Airport into Denver in an average week, so prices vary by time and availability. 9,066 United Airlines reviews by users on momondo have scored the airline at 7.4/10.

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Breckenridge
Estes Park
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Manitou Springs
Longmont
Boulder
Greeley
Lakewood
Thornton
Westminster
Winter Park
Copper Mountain
Silverthorne
Centennial
Frisco
Grand Lake

Why use momondo?

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

It is quick and easy to find Washington, D.C. to Denver flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Denver that suits you.

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

Yes. momondo enables you to select and highlight flights to Denver from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Denver?

momondo helps you find the best flight between Washington, D.C. and Denver by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Washington, D.C. to Denver right now. Can momondo alert me if prices change?

Price alerts on flights to Denver from Washington, D.C. 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 Denver trip

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