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Cheap flights from Washington, D.C. Dulles Intl Airport to Denver from $171

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 4/1. 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.
Southwest Logo
6:20 am - 9:45 am
IAD
-
COS
5h 25m
1 stop
Southwest Logo
4:05 pm - 11:40 pm
COS
-
IAD
5h 35m
1 stop
$341Southwest
Wed, Apr 8 - Wed, Apr 15
American Airlines Logo
5:59 pm - 11:32 pm
IAD
-
COS
7h 33m
1 stop
American Airlines Logo
1:39 pm - 11:59 pm
COS
-
IAD
8h 20m
2 stops
$346American Airlines
Wed, Apr 8 - Wed, Apr 15
Southwest Logo
5:50 am - 9:30 am
IAD
-
COS
5h 40m
1 stop
Southwest Logo
7:05 am - 4:50 pm
COS
-
IAD
7h 45m
1 stop
$359Southwest
Wed, Mar 25 - Wed, Apr 8
Delta Logo
6:00 am - 12:17 pm
IAD
-
COS
8h 17m
1 stop
Delta Logo
1:13 pm - 8:52 pm
COS
-
IAD
5h 39m
1 stop
$364Delta
Tue, Apr 14 - Fri, Apr 17
American Airlines Logo
5:00 am - 3:58 pm
IAD
-
COS
12h 58m
2 stops
American Airlines Logo
1:39 pm - 11:26 pm
COS
-
IAD
7h 47m
1 stop
$365American Airlines
Wed, Mar 25 - Wed, Apr 8
Delta Logo
6:00 am - 12:17 pm
IAD
-
COS
8h 17m
1 stop
Delta Logo
7:59 am - 11:32 pm
COS
-
IAD
13h 33m
2 stops
$369Delta
Tue, Apr 14 - Fri, Apr 17
American Airlines Logo
5:00 am - 3:58 pm
IAD
-
COS
12h 58m
2 stops
American Airlines Logo
12:22 pm - 11:59 pm
COS
-
IAD
9h 37m
2 stops
$370American Airlines
Wed, Mar 25 - Wed, Apr 8
Delta Logo
11:04 am - 8:20 pm
IAD
-
COS
11h 16m
2 stops
Delta Logo
7:59 am - 11:32 pm
COS
-
IAD
13h 33m
2 stops
$374Delta
Tue, Apr 14 - Fri, Apr 17
American Airlines Logo
7:00 am - 12:49 pm
IAD
-
COS
7h 49m
1 stop
American Airlines Logo
1:39 pm - 11:26 pm
COS
-
IAD
7h 47m
1 stop
$377American Airlines
Tue, Apr 7 - Sat, Apr 11
United Airlines Logo
7:59 pm - 11:56 pm
IAD
-
COS
5h 57m
1 stop
United Airlines Logo
6:55 pm - 5:17 am
COS
-
IAD
8h 22m
1 stop
$382United Airlines
Thu, Mar 5 - Sun, Mar 8

United Airlines flights from Washington, D.C. Dulles Intl Airport to Colorado Springs

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Colorado Springs flight tickets
United Airlines
Mar 5
IAD7:59 pmWashington, D.C. Dulles Intl
5h 57m
1 stop
COS11:56 pmColorado Springs
Mar 8
COS6:55 pmColorado Springs
8h 22m
1 stop
IAD5:17 amWashington, D.C. Dulles Intl
$382
United Airlines
Aug 2
IAD7:30 pmWashington, D.C. Dulles Intl
6h 29m
1 stop
COS11:59 pmColorado Springs
Aug 5
COS5:13 pmColorado Springs
5h 24m
1 stop
IAD12:37 amWashington, D.C. Dulles Intl
$402
United Airlines
Apr 8
IAD6:15 amWashington, D.C. Dulles Intl
6h 42m
1 stop
COS10:57 amColorado Springs
Apr 13
COS1:33 pmColorado Springs
15h 47m
2 stops
IAD7:20 amWashington, D.C. Dulles Intl
$414

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Colorado Springs flight tickets
American Airlines
Apr 8
IAD5:59 pmWashington, D.C. Dulles Intl
7h 33m
1 stop
COS11:32 pmColorado Springs
Apr 15
COS1:39 pmColorado Springs
8h 20m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
$346
American Airlines
Mar 25
IAD5:00 amWashington, D.C. Dulles Intl
12h 58m
2 stops
COS3:58 pmColorado Springs
Apr 8
COS1:39 pmColorado Springs
7h 47m
1 stop
IAD11:26 pmWashington, D.C. Dulles Intl
$365
American Airlines
Mar 25
IAD5:00 amWashington, D.C. Dulles Intl
12h 58m
2 stops
COS3:58 pmColorado Springs
Apr 8
COS12:22 pmColorado Springs
9h 37m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
$370

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Colorado Springs 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 February 3, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Colorado Springs that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Wed 4/8

6:20 am-9:45 am

1 stop5h 25m

Colorado Springs

Wed 4/15

4:05 pm-11:40 pm

1 stop5h 35m

$341

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Wed 4/8

5:59 pm-11:32 pm

1 stop7h 33m

Colorado Springs

Wed 4/15

1:39 pm-11:59 pm

2 stops8h 20m

$346

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Wed 3/25

5:50 am-9:30 am

1 stop5h 40m

Colorado Springs

Wed 4/8

7:05 am-4:50 pm

1 stop7h 45m

$359

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Tue 4/14

6:00 am-12:17 pm

1 stop8h 17m

Colorado Springs

Fri 4/17

1:13 pm-8:52 pm

1 stop5h 39m

$364

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Wed 3/25

5:00 am-3:58 pm

2 stops12h 58m

Colorado Springs

Wed 4/8

1:39 pm-11:26 pm

1 stop7h 47m

$365

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Tue 4/14

6:00 am-12:17 pm

1 stop8h 17m

Colorado Springs

Fri 4/17

7:59 am-11:32 pm

2 stops13h 33m

$369

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Wed 3/25

5:00 am-3:58 pm

2 stops12h 58m

Colorado Springs

Wed 4/8

12:22 pm-11:59 pm

2 stops9h 37m

$370

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Tue 4/14

11:04 am-8:20 pm

2 stops11h 16m

Colorado Springs

Fri 4/17

7:59 am-11:32 pm

2 stops13h 33m

$374

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Tue 4/7

7:00 am-12:49 pm

1 stop7h 49m

Colorado Springs

Sat 4/11

1:39 pm-11:26 pm

1 stop7h 47m

$377

Washington, D.C.Colorado Springs

IAD - COS

IADCOS

Washington, D.C. Dulles Intl

Thu 3/5

7:59 pm-11:56 pm

1 stop5h 57m

Colorado Springs

Sun 3/8

6:55 pm-5:17 am

1 stop8h 22m

$382

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 Colorado Springs

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 Colorado Springs?

The month of August is another great option to travel to Colorado Springs, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $317.

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

As of February 2026, prices for Washington, D.C. Dulles Intl Airport to Colorado Springs flights are approximately 153% more expensive when compared to flights at the same time last year.

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

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

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

Fastest flight time

5h 40m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Colorado Springs takes 5h 40m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Colorado Springs. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Colorado Springs.
Search flight deals

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

    A flight from Washington, D.C. Dulles Intl to Colorado Springs will travel around 1465.4 mi. By plane, this route typically takes 5h 40m.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 Colorado Springs Airport.

  • What documentation or ID do you need to fly to Colorado Springs Airport?

    The necessary travel and health documents for your Colorado Springs Airport 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 airline from Washington, D.C. Dulles Intl Airport to Colorado Springs?

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Colorado Springs with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $160Free CancellationRating
7.2
11,212 reviews
Search American Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,132 reviews
Search Delta flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,229 reviews
Search United Airlines flights
SouthwestPriceFrom $280Free CancellationRating
8.0
4,271 reviews
Search Southwest flights

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Cañon City

Why use momondo?

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

Finding the right flight to Colorado Springs from Washington, D.C. 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 Colorado Springs quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Colorado Springs flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Washington, D.C. and Colorado Springs 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 Colorado Springs right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Colorado Springs from Washington, D.C.. 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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