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Cheap flights from Washington, D.C. Dulles Intl Airport to Denver 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 Washington, D.C. Dulles Intl Airport to Denver departing on 10/25. 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

Frontier Logo
1:55 pm - 8:47 pmIAD-DEN
8h 52m1 stop
Frontier Logo
1:42 pm - 11:29 pmDEN-IAD
7h 47m1 stop
$150Frontier
Find Deal
Thu, Oct 2 - Thu, Oct 30
Frontier Logo
1:55 pm - 8:47 pmIAD-DEN
8h 52m1 stop
Frontier Logo
12:59 am - 12:55 pmDEN-IAD
9h 56m1 stop
$152Frontier
Find Deal
Mon, Sep 29 - Sun, Oct 5
Frontier Logo
9:52 pm - 8:43 amIAD-DEN
12h 51m1 stop
Frontier Logo
1:42 pm - 12:11 amDEN-IAD
8h 29m1 stop
$155Frontier
Find Deal
Thu, Nov 6 - Mon, Nov 10
Frontier Logo
1:55 pm - 8:47 pmIAD-DEN
8h 52m1 stop
Frontier Logo
2:00 pm - 8:09 pmDEN-IAD
28h 09m1 stop
$156Frontier
Find Deal
Mon, Sep 29 - Wed, Oct 1
Frontier Logo
1:55 pm - 8:47 pmIAD-DEN
8h 52m1 stop
Frontier Logo
7:01 pm - 6:29 pmDEN-IAD
21h 28m1 stop
$157Frontier
Find Deal
Thu, Oct 2 - Fri, Oct 3
Frontier Logo
1:07 pm - 12:51 amIAD-DEN
13h 44m1 stop
Frontier Logo
11:59 pm - 7:14 pmDEN-IAD
17h 15m1 stop
$159Frontier
Find Deal
Thu, Oct 16 - Sun, Oct 19
United Airlines Logo
10:09 pm - 11:57 pmIAD-DEN
3h 48mnonstop
United Airlines Logo
11:59 pm - 5:22 amDEN-IAD
3h 23mnonstop
$177United Airlines
Find Deal
Tue, Oct 21 - Wed, Oct 22
American Airlines Logo
6:11 am - 11:46 amIAD-DEN
7h 35m1 stop
American Airlines Logo
8:13 am - 4:11 pmDEN-IAD
5h 58m1 stop
$197American Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 15
Southwest Logo
7:45 pm - 9:35 pmIAD-DEN
3h 50mnonstop
Southwest Logo
7:45 am - 1:00 pmDEN-IAD
3h 15mnonstop
$199Southwest
Find Deal
Fri, Oct 24 - Mon, Oct 27
American Airlines Logo
5:40 pm - 10:09 pmIAD-DEN
6h 29m1 stop
American Airlines Logo
5:44 am - 4:50 pmDEN-IAD
9h 06m1 stop
$207American Airlines
Find Deal
Tue, Sep 30 - Thu, Oct 2

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
Oct 2
IAD1:55 pmWashington, D.C. Dulles Intl
8h 52m
1 stop
DEN8:47 pmDenver Intl
Oct 30
DEN1:42 pmDenver Intl
7h 47m
1 stop
IAD11:29 pmWashington, D.C. Dulles Intl
$150
Find similar
Frontier
Sep 29
IAD1:55 pmWashington, D.C. Dulles Intl
8h 52m
1 stop
DEN8:47 pmDenver Intl
Oct 5
DEN12:59 amDenver Intl
9h 56m
1 stop
IAD12:55 pmWashington, D.C. Dulles Intl
$152
Find similar
Frontier
Nov 6
IAD9:52 pmWashington, D.C. Dulles Intl
12h 51m
1 stop
DEN8:43 amDenver Intl
Nov 10
DEN1:42 pmDenver Intl
8h 29m
1 stop
IAD12:11 amWashington, D.C. Dulles Intl
$155
Find similar

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Denver flight tickets
American Airlines
Nov 1
IAD6:11 amWashington, D.C. Dulles Intl
7h 35m
1 stop
DEN11:46 amDenver Intl
Nov 15
DEN8:13 amDenver Intl
5h 58m
1 stop
IAD4:11 pmWashington, D.C. Dulles Intl
$197
Find similar
American Airlines
Sep 30
IAD5:40 pmWashington, D.C. Dulles Intl
6h 29m
1 stop
DEN10:09 pmDenver Intl
Oct 2
DEN5:44 amDenver Intl
9h 06m
1 stop
IAD4:50 pmWashington, D.C. Dulles Intl
$207
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 September 9, 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

Thu 10/2

1:55 pm-8:47 pm

1 stop8h 52m

Denver Intl

Thu 10/30

1:42 pm-11:29 pm

1 stop7h 47m

$150

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Mon 9/29

1:55 pm-8:47 pm

1 stop8h 52m

Denver Intl

Sun 10/5

12:59 am-12:55 pm

1 stop9h 56m

$152

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 11/6

9:52 pm-8:43 am

1 stop12h 51m

Denver Intl

Mon 11/10

1:42 pm-12:11 am

1 stop8h 29m

$155

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Mon 9/29

1:55 pm-8:47 pm

1 stop8h 52m

Denver Intl

Wed 10/1

2:00 pm-8:09 pm

1 stop28h 09m

$156

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 10/2

1:55 pm-8:47 pm

1 stop8h 52m

Denver Intl

Fri 10/3

7:01 pm-6:29 pm

1 stop21h 28m

$157

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Thu 10/16

1:07 pm-12:51 am

1 stop13h 44m

Denver Intl

Sun 10/19

11:59 pm-7:14 pm

1 stop17h 15m

$159

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 10/21

10:09 pm-11:57 pm

Nonstop3h 48m

Denver Intl

Wed 10/22

11:59 pm-5:22 am

Nonstop3h 23m

$177

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Sat 11/1

6:11 am-11:46 am

1 stop7h 35m

Denver Intl

Sat 11/15

8:13 am-4:11 pm

1 stop5h 58m

$197

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Fri 10/24

7:45 pm-9:35 pm

Nonstop3h 50m

Denver Intl

Mon 10/27

7:45 am-1:00 pm

Nonstop3h 15m

$199

Washington, D.C.Denver

IAD - DEN

IADDEN

Washington, D.C. Dulles Intl

Tue 9/30

5:40 pm-10:09 pm

1 stop6h 29m

Denver Intl

Thu 10/2

5:44 am-4:50 pm

1 stop9h 06m

$207

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 January. Flight prices, which tend to average around $301, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in January, then you should wait until February 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 $300. 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 $370.

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 $259. Flights in the evening are often more expensive with an average ticket price of $374.

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 $279 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.

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

As of September 2025, prices for Washington, D.C. Dulles Intl Airport to Denver flights are approximately 10% cheaper 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

$182

Fastest flight time

3h 35m

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 $182. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Denver found on momondo in the last 72 hours is $320.
The fastest flight from Washington, D.C. Dulles Intl Airport to Denver takes 3h 35m
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 3h 48m, 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 $100Free CancellationRating
5.8
3,185 reviews
Search Frontier flights
American AirlinesPriceFrom $166Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $178Free CancellationRating
8.0
4,250 reviews
Search Southwest flights
United AirlinesPriceFrom $219Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
7,965 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 $178 round-trip. Over the 15 Southwest flights for this route in a normal week, average airfare is usually $296 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 $219, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $374 round-trip. United Airlines operates 41 flights out of Washington, D.C. Dulles Intl Airport into Denver in an average week, so prices vary by time and availability. 8,943 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
Estes Park
Breckenridge
Black Hawk
Aurora
Fort Collins
Keystone
Cripple Creek
Boulder
Manitou Springs
Longmont
Lakewood
Greeley
Thornton
Westminster
Winter Park
Copper Mountain
Frisco
Grand Lake
Silverthorne
Golden

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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