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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
COS — IAD
jul. 8 — jul. 151
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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 julio 3, 2025.

Round-trip from

$237
(Delta)

One-way from

$105
(American Airlines)

Popular in

October

Cheapest in

February

Average price

$486
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. 5% potential increase in price ($20 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 July 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 julio 3, 2025.

This Delta deal was found by Cheapflights users on 7/2. 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 stop6h 31mDelta
mar. 8/266:15 amIAD - COS
1 stop6h 01mDelta
Deal found 7/2$237
This American Airlines deal was found by Cheapflights users on 7/1. 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.
sáb. 9/206:02 amCOS - IAD
2 stops10h 45mAmerican Airlines
sáb. 9/2712:48 pmIAD - COS
2 stops11h 20mAmerican Airlines
Deal found 7/1$261
This United Airlines deal was found by Cheapflights users on 7/2. 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.
vie. 8/15:20 pmCOS - IAD
1 stop5h 25mUnited Airlines
mar. 8/58:06 pmIAD - COS
1 stop5h 46mUnited Airlines
Deal found 7/2$263
This Southwest deal was found by Cheapflights users on 7/1. 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.
mié. 7/305:45 amCOS - IAD
1 stop5h 35mSouthwest
mié. 7/305:35 pmIAD - COS
1 stop7h 50mSouthwest
Deal found 7/1$353

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 julio 3, 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-2:31 pm

1 stop6h 31m

Washington, D.C. Dulles Intl

mar. 8/26

6:15 am-10:16 am

1 stop6h 01m

$237

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

sáb. 9/20

6:02 am-6:47 pm

2 stops10h 45m

Washington, D.C. Dulles Intl

sáb. 9/27

12:48 pm-10:08 pm

2 stops11h 20m

$261

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

vie. 8/1

5:20 pm-12:45 am

1 stop5h 25m

Washington, D.C. Dulles Intl

mar. 8/5

8:06 pm-11:52 pm

1 stop5h 46m

$263

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mié. 7/30

5:45 am-1:20 pm

1 stop5h 35m

Washington, D.C. Dulles Intl

mié. 7/30

5:35 pm-11:25 pm

1 stop7h 50m

$353

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

vie. 10/31

12:05 pm-11:51 pm

2 stops9h 46m

$105

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

mié. 9/17

1:11 pm-11:17 pm

1 stop8h 06m

$119

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

sáb. 9/20

6:00 am-1:26 pm

1 stop5h 26m

$126

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

dom. 11/16

5:30 am-5:10 pm

1 stop9h 40m

$170

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

lun. 9/29

9:11 am-11:26 am

3 stops24h 15m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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 $345). 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.

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 julio 3, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Colorado Springs to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Entertainment

7.6

Food

7.0

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.

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Entertainment

7.6

Food

7.0

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

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Entertainment

7.6

Food

7.0

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.

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Entertainment

7.6

Food

7.0

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.

Comfort

8.0

Crew

8.6

Boarding

8.2

Overall

8.0

Entertainment

7.6

Food

7.0

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 3 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 United Airlines. Delta is 40% 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 Delta and United Airlines, 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 $345). 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
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Alexandria
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Linthicum Heights
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Top 3 airlines flying from Colorado Springs to Dulles Intl

Discover the top 3 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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$377FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$288FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$281Average$418FlexibilityNo cancel feeOn-time63%

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