Dulles Intl

$118+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
COS — IAD
jun. 17 — jun. 241
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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 junio 12, 2025.

Round-trip from

$237
(Delta)

One-way from

$118
(American Airlines)

Popular in

October

Cheapest in

February

Average price

$321
From Colorado Springs to Washington, D.C. Dulles Intl
One-way flight from Colorado Springs to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in June 2025

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 junio 12, 2025.

This Delta deal was found by Cheapflights users on 6/12. 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.
mar. 8/196:00 amCOS - IAD
1 stop8h 30mDelta
mar. 8/266:00 amIAD - COS
1 stop8h 12mDelta
Deal found 6/12$237
This American Airlines deal was found by Cheapflights users on 6/12. 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.
mar. 8/1910:52 amCOS - IAD
2 stops10h 04mAmerican Airlines
mar. 8/267:44 amIAD - COS
2 stops10h 44mAmerican Airlines
Deal found 6/12$247
This United Airlines deal was found by Cheapflights users on 6/11. 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.
mié. 7/93:35 pmCOS - IAD
1 stop5h 35mUnited Airlines
mié. 7/168:06 pmIAD - COS
1 stop5h 46mUnited Airlines
Deal found 6/11$289
This Southwest deal was found by Cheapflights users on 6/12. 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.
mar. 7/111:20 amCOS - IAD
1 stop5h 05mSouthwest
jue. 7/37:50 pmIAD - COS
1 stop5h 25mSouthwest
Deal found 6/12$388
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/275:43 pmCOS - IAD
3 stops25h 54mMultiple Airlines
dom. 7/612:34 pmIAD - COS
3 stops29h 45mMultiple Airlines
Deal found 6/10$630

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 junio 12, 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

mar. 8/19

6:00 am-4:30 pm

1 stop8h 30m

Washington, D.C. Dulles Intl

mar. 8/26

6:00 am-12:12 pm

1 stop8h 12m

$237

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mar. 8/19

6:02 am-6:52 pm

2 stops10h 50m

Washington, D.C. Dulles Intl

mar. 8/26

7:44 am-6:20 pm

2 stops12h 36m

$247

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mié. 7/30

3:35 pm-11:10 pm

1 stop5h 35m

Washington, D.C. Dulles Intl

dom. 8/3

6:35 am-11:08 am

1 stop6h 33m

$306

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mar. 7/1

11:20 am-6:25 pm

1 stop5h 05m

Washington, D.C. Dulles Intl

jue. 7/3

7:50 pm-11:15 pm

1 stop5h 25m

$388

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

vie. 6/27

5:43 pm-9:37 pm

3 stops25h 54m

Washington, D.C. Dulles Intl

dom. 7/6

12:34 pm-4:19 pm

3 stops29h 45m

$630

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mié. 9/10

12:16 pm-10:49 pm

1 stop8h 33m

$118

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mié. 8/20

10:30 am-7:13 pm

1 stop6h 43m

$119

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

vie. 7/4

3:00 pm-10:10 pm

1 stop5h 10m

$140

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

sáb. 8/9

6:00 am-4:43 pm

1 stop8h 43m

$141

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

lun. 7/21

10:15 am-11:24 am

3 stops47h 09m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 July is currently the most expensive (average of $349). 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 junio 12, 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.

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
8.0
Very good

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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?

    Delta, 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 Southwest. Delta is 41% 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 $118. However, be on the lookout for offers from United Airlines and Southwest, 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 July is currently the most expensive (average of $349). 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
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Fredericksburg
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Fairfax
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Easton
Herndon
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National Harbor
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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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$228Average$348FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$380FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$288FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$281Average$418FlexibilityNo cancel feeOn-time63%

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