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Dulles Intl

$100+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
COS — IAD
abr. 15 — abr. 221
mar. 4/15
mar. 4/22
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 abril 10, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(United Airlines)

One-way from

$100
(Southwest)

Popular in

June

Cheapest in

February

Average price

$378
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. 18% potential increase in price ($96 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in April 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 abril 10, 2025.

This United Airlines deal was found by Cheapflights users on 4/8. 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. 4/239:00 amCOS - IAD
1 stop7h 49mUnited Airlines
sáb. 4/264:00 pmIAD - COS
1 stop5h 58mUnited Airlines
Deal found 4/8$237
This American Airlines deal was found by Cheapflights users on 4/9. 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.
mié. 4/3010:42 amCOS - IAD
2 stops11h 14mAmerican Airlines
lun. 5/55:07 pmIAD - COS
1 stop8h 38mAmerican Airlines
Deal found 4/9$242
This Delta deal was found by Cheapflights users on 4/8. 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. 6/246:00 amCOS - IAD
1 stop8h 33mDelta
lun. 6/306:20 amIAD - COS
1 stop5h 42mDelta
Deal found 4/8$257
This Southwest deal was found by Cheapflights users on 4/9. 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.
sáb. 5/244:05 pmCOS - IAD
1 stop5h 10mSouthwest
sáb. 5/315:05 amIAD - COS
1 stop7h 15mSouthwest
Deal found 4/9$279

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 abril 10, 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. 5/6

6:00 am-4:17 pm

1 stop8h 17m

Washington, D.C. Dulles Intl

mar. 5/13

5:07 pm-11:45 pm

1 stop8h 38m

$237

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

jue. 6/26

6:00 am-4:33 pm

1 stop8h 33m

Washington, D.C. Dulles Intl

dom. 6/29

6:20 am-10:02 am

1 stop5h 42m

$268

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

sáb. 5/24

4:05 pm-11:15 pm

1 stop5h 10m

Washington, D.C. Dulles Intl

sáb. 5/31

5:05 am-10:20 am

1 stop7h 15m

$279

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

sáb. 6/7

3:43 pm-12:34 am

1 stop6h 51m

Washington, D.C. Dulles Intl

mié. 6/11

7:59 pm-11:59 pm

1 stop6h 00m

$302

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

vie. 7/4

3:00 pm-10:10 pm

1 stop5h 10m

$100

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

vie. 5/23

1:55 pm-12:28 am

1 stop8h 33m

$119

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

jue. 5/29

2:35 pm-12:34 am

1 stop7h 59m

$146

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

sáb. 5/31

6:00 am-4:17 pm

1 stop8h 17m

$155

Colorado SpringsWashington, D.C.

COS - IAD

COSIAD

Colorado Springs

lun. 6/9

10:05 am-11:24 am

3 stops47h 19m

$231

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 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 FlightHub the most. FlightHub 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 $383). 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 abril 10, 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
4,278 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,278 reviews
Southwest
8.0
Very good
4,278 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,907 reviews
Southwest
8.0
Very good
4,278 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,634 reviews
Southwest
8.0
Very good
4,278 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,278 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 46% 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 Southwest, with whom users have recently found tickets for as low as $100. 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 $383). 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
Fairfax
Tysons
Springfield
Rockville
Fredericksburg
Woodbridge
Gaithersburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Gettysburg
National Harbor
Oxon Hill

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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.
Denver to Dulles Intl flights
Denver to Reagan-National flights
Denver to Baltimore flights
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Grand Junction to Dulles Intl flights
Grand Junction to Baltimore flights
Grand Junction to Reagan-National flights
Durango to Baltimore flights
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Vail to Baltimore flights
Durango to Reagan-National flights
Aspen to Dulles Intl flights
Aspen to Baltimore flights
Montrose to Reagan-National flights
Montrose to Baltimore flights
Vail to Reagan-National flights
Hayden to Baltimore flights
Hayden to Reagan-National flights
Aspen to Reagan-National flights
Gunnison to Dulles Intl flights
Gunnison to Baltimore flights

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 abril 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$228Average$420FlexibilityNo cancel feeOn-time69%
DeltaCheapest$268Average$488FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$521FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$343Average$427FlexibilityNo cancel feeOn-time63%

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