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Dulles Intl

$420+ Cheap flights from Cologne (CGN) 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — IAD
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap flight deals from Cologne to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Cologne (CGN) 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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$570
(British Airways)

One-way from

$420
(Kiwi.com)

Popular in

August

Cheapest in

April

Average price

$518
Provider with most accurate pricing for Cologne Köln/Bonn-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Cologne Köln/Bonn-Washington, D.C. Dulles Intl flights.
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From Cologne Köln/Bonn to Washington, D.C. Dulles Intl
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One-way flight from Cologne Köln/Bonn to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 7% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Cologne to Dulles Intl

Cheapest flights from Cologne to Dulles Intl
Explore the most affordable flight options available from Cologne to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This British Airways deal was found by Cheapflights users on 1/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/25:15 pm
CGN
-
IAD
1 stop28h 20m
British Airways
Sun 3/810:45 pm
IAD
-
CGN
1 stop12h 45m
British Airways
Deal found 1/15$570
This British Airways deal was found by Cheapflights users on 1/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/274:35 pm
CGN
-
IAD
1 stop29h 00m
British Airways
Sun 3/810:45 pm
IAD
-
CGN
1 stop12h 45m
British Airways
Deal found 1/15$594
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/19:10 am
CGN
-
IAD
1 stop12h 25m
Lufthansa
Sun 3/87:20 pm
IAD
-
CGN
2 stops12h 15m
Lufthansa
Deal found 1/14$602
This Expedia deal was found by Cheapflights users on 1/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:40 pm
CGN
-
IAD
1 stop23h 55m
Multiple Airlines
Fri 5/810:20 pm
IAD
-
CGN
1 stop14h 35m
Multiple Airlines
Deal found 1/14$603
This Gotogate deal was found by Cheapflights users on 1/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/46:45 am
CGN
-
IAD
2 stops20h 09m
Air Canada
Thu 2/194:30 pm
IAD
-
CGN
2 stops13h 40m
Air Canada
Deal found 1/14$606
This Flysmarter deal was found by Cheapflights users on 1/15. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/61:00 pm
CGN
-
IAD
1 stop12h 25m
Lufthansa
Sat 5/1610:20 pm
IAD
-
CGN
1 stop15h 10m
Lufthansa
Deal found 1/15$607
This Expedia deal was found by Cheapflights users on 1/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:35 am
CGN
-
IAD
1 stop35h 00m
Multiple Airlines
Tue 4/1410:20 pm
IAD
-
CGN
1 stop15h 10m
Multiple Airlines
Deal found 1/14$613
This United Airlines deal was found by Cheapflights users on 1/14. 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.
Sat 1/319:10 am
CGN
-
IAD
1 stop12h 25m
United Airlines
Wed 2/45:20 pm
IAD
-
CGN
2 stops13h 30m
United Airlines
Deal found 1/14$614
This United Airlines deal was found by Cheapflights users on 1/13. 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.
Thu 2/261:35 pm
CGN
-
IAD
2 stops15h 46m
United Airlines
Mon 3/25:40 pm
IAD
-
CGN
1 stop13h 10m
United Airlines
Deal found 1/13$620
This Expedia deal was found by Cheapflights users on 1/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/46:45 am
CGN
-
IAD
2 stops20h 09m
Multiple Airlines
Thu 2/195:40 pm
IAD
-
CGN
1 stop12h 55m
Multiple Airlines
Deal found 1/14$623

Cheapflights Fare Finder

 
Customize your flight search to find flights from Cologne 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 January 15, 2026.
Use the filters below to find and compare flights from Cologne to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Cologne

Fly to

Dulles Intl

Route

Depart

Return

Price

CologneWashington, D.C.

CGN - IAD

CGNIAD

Cologne Köln/Bonn

Mon 3/2

5:15 pm-3:35 pm

1 stop28h 20m

Washington, D.C. Dulles Intl

Sun 3/8

10:45 pm-4:30 pm

1 stop12h 45m

$571

CologneWashington, D.C.

CGN - IAD

CGNIAD

Cologne Köln/Bonn

Fri 2/27

4:35 pm-3:35 pm

1 stop29h 00m

Washington, D.C. Dulles Intl

Sun 3/8

10:45 pm-4:30 pm

1 stop12h 45m

$594

CologneWashington, D.C.

CGN - IAD

CGNIAD

Cologne Köln/Bonn

Wed 5/6

1:00 pm-7:25 pm

1 stop12h 25m

Washington, D.C. Dulles Intl

Sat 5/16

10:20 pm-7:30 pm

1 stop15h 10m

$607

CologneWashington, D.C.

CGN - IAD

CGNIAD

Cologne Köln/Bonn

Sat 1/31

9:10 am-3:35 pm

1 stop12h 25m

Washington, D.C. Dulles Intl

Wed 2/4

5:20 pm-12:50 pm

2 stops13h 30m

$614

CologneWashington, D.C.

CGN - IAD

CGNIAD

Cologne Köln/Bonn

Thu 2/26

1:35 pm-11:21 pm

2 stops15h 46m

Washington, D.C. Dulles Intl

Mon 3/2

5:27 pm-12:50 pm

2 stops13h 23m

$620

CologneWashington, D.C.

CGN - IAD

CGNIAD

Cologne Köln/Bonn

Fri 2/27

8:40 am-8:54 pm

2 stops18h 14m

Washington, D.C. Dulles Intl

Sun 3/8

4:30 pm-12:10 pm

2 stops14h 40m

$635

CologneWashington, D.C.

CGN - IAD

CGNIAD

Cologne Köln/Bonn

Tue 3/17

6:55 pm-11:44 am

2 stops45h 49m

Washington, D.C. Dulles Intl

Sun 3/29

4:30 pm-12:20 pm

2 stops37h 50m

$640

CologneWashington, D.C.

CGN - IAD

CGNIAD

Cologne Köln/Bonn

Sat 1/31

1:15 pm-8:15 pm

2 stops13h 00m

Washington, D.C. Dulles Intl

Wed 2/4

4:30 pm-12:10 pm

2 stops13h 40m

$642

CologneWashington, D.C.

CGN - IAD

CGNIAD

Cologne Köln/Bonn

Wed 5/6

1:00 pm-11:57 pm

2 stops16h 57m

Washington, D.C. Dulles Intl

Sat 5/16

10:20 pm-5:20 pm

1 stop13h 00m

$738

CologneWashington, D.C.

CGN - IAD

CGNIAD

Cologne Köln/Bonn

Thu 3/19

1:35 pm-9:05 pm

1 stop12h 30m

Washington, D.C. Dulles Intl

Sun 4/5

5:25 pm-12:20 pm

1 stop12h 55m

$754

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 17 results
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Compare providers for flights from Cologne 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 Cologne to Dulles Intl in January.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Cologne-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Cologne-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Cologne-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 Cologne-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 Cologne-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 Cologne to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Cologne 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 Cologne to Washington, D.C. Dulles Intl Airport

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

Currently, April is the cheapest month in which you can book a flight from Cologne to Washington, D.C. Dulles Intl Airport (average of $237). Flying from Cologne to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $583). 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.

Related info for your journey

Find useful and relevant information for your journey from Cologne 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 Cologne to Washington, D.C. Dulles Intl?

    Cologne Köln/Bonn (CGN) is the airport you will fly out of if you book a flight from Cologne to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from Köln/Bonn; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Cologne airport to Washington, D.C. Dulles Intl. It is only a 9.5 mi journey to Köln/Bonn (CGN) from Cologne’s city center.

  • How long is the flight from Cologne to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Cologne to Washington, D.C. Dulles Intl Airport in 12h 25m. Fly via British Airways, Lufthansa, or United Airlines to get the fastest option. There are 3986 mi between Cologne and Washington, D.C. Dulles Intl Airport. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Cologne 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 Cologne to Washington, D.C. Dulles Intl Airport?

    Currently, April is the cheapest month in which you can book a flight from Cologne to Washington, D.C. Dulles Intl Airport (average of $237). Flying from Cologne to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $583). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Hanover
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Largo
Bowie
McLean
Clinton
Herndon

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Alternative routes for Cologne to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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