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Dulles Intl

$105+ Cheap flights from Colorado Springs (COS) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
COS — IAD
May 28 — Jun 41
Wed 5/28
Wed 6/4
1 adult, Economy
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Cheap flight deals from Colorado Springs to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Colorado Springs (COS) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$237
(United Airlines)

One-way from

$105
(American Airlines)

Popular in

July

Cheapest in

February

Average price

$443
Provider with most accurate pricing for Colorado Springs-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Colorado Springs-Washington, D.C. Dulles Intl flights.
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From Colorado Springs to Washington, D.C. Dulles Intl
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One-way flight from Colorado Springs to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Colorado Springs to Dulles Intl

Cheapest flights from Colorado Springs to Dulles Intl
Explore the most affordable flight options available from Colorado Springs to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 23, 2025.

This United Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/66:00 amCOS - IAD
1 stop5h 27mUnited Airlines
Tue 6/107:59 pmIAD - COS
1 stop6h 00mUnited Airlines
Deal found 5/22$237
This American Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/610:52 amCOS - IAD
1 stop6h 04mAmerican Airlines
Wed 8/1310:26 amIAD - COS
2 stops9h 54mAmerican Airlines
Deal found 5/22$242
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/176:00 amCOS - IAD
1 stop6h 36mDelta
Tue 6/246:20 amIAD - COS
1 stop5h 42mDelta
Deal found 5/22$289
This Southwest deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/107:20 amCOS - IAD
2 stops9h 05mSouthwest
Thu 6/125:00 amIAD - COS
1 stop8h 10mSouthwest
Deal found 5/22$562

Cheapflights Fare Finder

Customize your flight search to find flights from Colorado Springs to Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated May 23, 2025.
Use the filters below to find and compare flights from Colorado Springs to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Colorado Springs

Fly to

Dulles Intl

Route

Depart

Return

Price

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Fri 6/6

6:00 am-1:27 pm

1 stop5h 27m

Washington, D.C. Dulles Intl

Tue 6/10

7:59 pm-11:59 pm

1 stop6h 00m

$237

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Wed 8/6

10:52 am-6:56 pm

1 stop6h 04m

Washington, D.C. Dulles Intl

Wed 8/13

10:26 am-6:20 pm

2 stops9h 54m

$242

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Tue 6/17

6:00 am-2:36 pm

1 stop6h 36m

Washington, D.C. Dulles Intl

Tue 6/24

6:20 am-10:02 am

1 stop5h 42m

$289

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Tue 6/10

7:20 am-6:25 pm

2 stops9h 05m

Washington, D.C. Dulles Intl

Thu 6/12

5:00 am-11:10 am

1 stop8h 10m

$562

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Sun 8/31

6:02 am-4:30 pm

2 stops8h 28m

$105

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Fri 6/6

5:30 am-3:34 pm

1 stop8h 04m

$119

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Mon 7/28

5:55 pm-8:59 am

2 stops13h 04m

$175

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Thu 10/16

4:41 pm-12:27 pm

2 stops17h 46m

$178

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

Mon 9/1

6:25 am-3:45 pm

1 stop7h 20m

$185

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/22

Compare providers for flights from Colorado Springs to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Colorado Springs to Dulles Intl in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Colorado Springs-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Colorado Springs-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Colorado Springs-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Colorado Springs-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Colorado Springs-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Colorado Springs to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Colorado Springs with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado Springs to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Colorado Springs to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated May 23, 2025.
Read through reviews of airlines operating flights from Colorado Springs to Washington, D.C., such as Southwest, Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,291 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Comfort

8.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,291 reviews
Southwest
8.0
Very good
4,291 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Comfort

8.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,950 reviews
Southwest
8.0
Very good
4,291 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Comfort

8.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,745 reviews
Southwest
8.0
Very good
4,291 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Comfort

8.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,291 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.6

Comfort

8.0

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Related info for your journey

Find useful and relevant information for your journey from Colorado Springs to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Colorado Springs to Washington, D.C. Dulles Intl?

    Located just 6.7 mi from the city center, Colorado Springs is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Colorado Springs. Booking flights from Colorado Springs (COS) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 4 different airlines.

  • What are the cheapest airlines flying from Colorado Springs to Washington, D.C. Dulles Intl Airport round-trip?

    United Airlines, at $237, was found to be the cheapest airline from Colorado Springs to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include American Airlines and Delta. United Airlines is 44% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Colorado Springs to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $105. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Colorado Springs to Washington, D.C. Dulles Intl Airport for a low price.

  • Can I find deals for flights from Colorado Springs to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Colorado Springs to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado Springs to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado Springs to Dulles Intl.

  • Can I find deals for business class flights from Colorado Springs to Dulles Intl?

    Yes. Cheapflights offers flight deals from Colorado Springs to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Colorado Springs to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Colorado Springs to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Colorado Springs?

Book flights to Colorado Springs if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Tysons
Silver Spring
Fairfax
Fredericksburg
Linthicum Heights
Gaithersburg
Springfield
Falls Church
Rockville
Laurel
Easton
Towson
Herndon
Sterling
Bowie
National Harbor
Reston

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Alternative routes for Colorado Springs to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Hayden to Baltimore flights
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Top 4 airlines flying from Colorado Springs to Dulles Intl

Discover the top 4 airlines that operate flights from Colorado Springs to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$228Average$348FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$394FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$317FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$281Average$418FlexibilityNo cancel feeOn-time63%

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