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Cologne

$330+ Cheap flights from Dulles Intl (IAD) to Cologne (CGN)

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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CGN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Dulles Intl to Cologne

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Cologne (CGN). 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 September 17, 2025.

Round-trip from

$489
(Mytrip)

One-way from

$330
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$640
From Washington, D.C. Dulles Intl to Cologne Köln/Bonn
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One-way flight from Washington, D.C. Dulles Intl to Cologne Köln/Bonn
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Dulles Intl to Cologne

Cheapest flights from Dulles Intl to Cologne
Explore the most affordable flight options available from Dulles Intl to Cologne. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Mytrip deal was found by Cheapflights users on 9/16. 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.
Tue 10/145:00 pmIAD - CGN
2 stops21h 35mMultiple Airlines
Tue 10/2112:55 pmCGN - IAD
2 stops32h 25mMultiple Airlines
Deal found 9/16$489
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/132:25 pmIAD - CGN
2 stops27h 15mMultiple Airlines
Mon 10/206:05 pmCGN - IAD
3 stops33h 00mMultiple Airlines
Deal found 9/15$592
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/149:40 pmIAD - CGN
1 stop34h 10mTurkish Airlines
Tue 10/217:10 pmCGN - IAD
1 stop30h 35mTurkish Airlines
Deal found 9/16$599
This Trip.com deal was found by Cheapflights users on 9/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:30 pmIAD - CGN
2 stops18h 35mMultiple Airlines
Mon 11/37:00 amCGN - IAD
2 stops17h 30mMultiple Airlines
Deal found 9/17$606
This FlightHub deal was found by Cheapflights users on 9/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/292:30 pmIAD - CGN
1 stop15h 05mTurkish Airlines
Wed 11/1211:35 amCGN - IAD
1 stop37h 40mTurkish Airlines
Deal found 9/14$608
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/131:30 pmIAD - CGN
1 stop18h 20mTurkish Airlines
Mon 10/207:10 pmCGN - IAD
1 stop22h 35mTurkish Airlines
Deal found 9/15$645
This AirNGo deal was found by Cheapflights users on 9/17. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:50 pmIAD - CGN
1 stop14h 30mBritish Airways
Mon 11/35:15 pmCGN - IAD
1 stop28h 20mBritish Airways
Deal found 9/17$654
This AirNGo deal was found by Cheapflights users on 9/16. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/291:30 pmIAD - CGN
1 stop18h 20mTurkish Airlines
Tue 10/142:50 pmCGN - IAD
1 stop26h 55mTurkish Airlines
Deal found 9/16$655
This SmartFares deal was found by Cheapflights users on 9/15. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/302:30 pmIAD - CGN
1 stop15h 05mTurkish Airlines
Thu 11/66:15 pmCGN - IAD
1 stop31h 00mTurkish Airlines
Deal found 9/15$657
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/161:30 pmIAD - CGN
1 stop18h 20mTurkish Airlines
Sun 10/192:50 pmCGN - IAD
1 stop26h 55mTurkish Airlines
Deal found 9/16$663

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Cologne 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 September 17, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Cologne that are best for you.

Fly from

Dulles Intl

Fly to

Cologne

Route

Depart

Return

Price

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Tue 10/14

5:00 pm-11:10 pm

3 stops24h 10m

Cologne Köln/Bonn

Tue 10/21

12:55 pm-3:20 pm

2 stops32h 25m

$560

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Mon 10/13

10:20 am-11:40 pm

2 stops31h 20m

Cologne Köln/Bonn

Mon 10/20

6:05 pm-1:30 pm

2 stops25h 25m

$592

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Wed 10/29

2:30 pm-10:35 am

1 stop15h 05m

Cologne Köln/Bonn

Wed 11/12

11:35 am-7:15 pm

1 stop37h 40m

$608

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Mon 10/13

1:30 pm-1:50 pm

1 stop18h 20m

Cologne Köln/Bonn

Mon 10/20

7:10 pm-11:45 am

1 stop22h 35m

$645

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Mon 10/20

5:50 pm-2:20 pm

1 stop14h 30m

Cologne Köln/Bonn

Mon 11/3

5:15 pm-3:35 pm

1 stop28h 20m

$654

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Thu 10/30

2:30 pm-10:35 am

1 stop15h 05m

Cologne Köln/Bonn

Thu 11/6

6:15 pm-7:15 pm

1 stop31h 00m

$657

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Thu 10/16

1:30 pm-1:50 pm

1 stop18h 20m

Cologne Köln/Bonn

Sun 10/19

2:50 pm-11:45 am

1 stop26h 55m

$663

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Thu 9/25

1:30 pm-6:10 pm

1 stop22h 40m

Cologne Köln/Bonn

Mon 9/29

7:10 pm-11:45 am

1 stop22h 35m

$682

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Sun 10/26

2:30 pm-5:15 pm

1 stop21h 45m

Cologne Köln/Bonn

Sun 11/2

11:35 am-11:45 am

1 stop30h 10m

$682

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Fri 10/31

7:20 pm-4:20 pm

1 stop16h 00m

Cologne Köln/Bonn

Fri 11/7

4:35 pm-3:35 pm

1 stop29h 00m

$694

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 results
1
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Best time to book a flight from Dulles Intl to Cologne

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

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Cologne (average of $649). Flying from Washington, D.C. Dulles Intl Airport to Cologne in June is currently the most expensive (average of $1,249). 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.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Cologne?

Reviews of airlines servicing Cologne

Get insights into the airlines that provide service to Cologne. 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 Cologne. Reviews last updated September 17, 2025.
Read reviews from past customers who have flown United Airlines, Lufthansa, and British Airways from Washington, D.C. Dulles Intl Airport to Cologne. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,926 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
Lufthansa
6.8
Okay
7,409 reviews
United Airlines
7.4
Good
8,926 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
British Airways
6.7
Okay
7,367 reviews
United Airlines
7.4
Good
8,926 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Related info for your journey

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

    For a flight from Washington, D.C. Dulles Intl to Cologne, you will be flying into Köln/Bonn. Cologne Köln/Bonn (CGN) is just 9.5 mi from the center of the city. Köln/Bonn is the only Cologne airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 3 airlines have flights to Cologne Köln/Bonn from Washington, D.C. Dulles Intl on a regular basis.

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

    A quick flight from Washington, D.C. Dulles Intl Airport to Cologne can take about 15h 05m. Turkish Airlines provides one of the quickest options available for as low as $608. Washington, D.C. Dulles Intl Airport and Cologne are separated by a distance of 3986 mi.

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

    British Airways, at $621, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Cologne.Alternate airlines to your destination round-trip include Lufthansa and United Airlines. British Airways is currently priced 18% below the average price you’ll pay for this route.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Cologne (average of $649). Flying from Washington, D.C. Dulles Intl Airport to Cologne in June is currently the most expensive (average of $1,249). 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.

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Alternative routes for Dulles Intl to Cologne

See prices for flight routes from nearby airports that may be better suited for you.
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Baltimore to Hamburg flights
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Top 3 airlines flying from Dulles Intl to Cologne

Discover the top 3 airlines that operate flights from Dulles Intl to Cologne. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$621Average$735FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$678Average$839FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$757Average$1,249FlexibilityNo cancel feeOn-time69%

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