HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Cologne

$257+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CGN
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Cologne with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 December 4, 2025.

This Mytrip deal was found by Cheapflights users on 12/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:30 pmIAD - CGN
2 stops22h 30mMultiple Airlines
Mon 1/123:35 pmCGN - IAD
2 stops29h 00mMultiple Airlines
Deal found 12/2$820
This Cheapflightsfares deal was found by Cheapflights users on 12/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/59:45 pmIAD - CGN
1 stop12h 35mBritish Airways
Fri 12/1211:20 amCGN - IAD
1 stop14h 35mBritish Airways
Deal found 12/3$940
This Mytrip deal was found by Cheapflights users on 12/3. 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.
Fri 12/510:30 pmIAD - CGN
2 stops19h 20mMultiple Airlines
Fri 12/122:45 pmCGN - IAD
2 stops27h 00mMultiple Airlines
Deal found 12/3$1,174
This oojo deal was found by Cheapflights users on 12/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:20 pmIAD - CGN
1 stop15h 20mBritish Airways
Mon 1/125:15 pmCGN - IAD
1 stop28h 20mBritish Airways
Deal found 12/2$1,181
This Mytrip deal was found by Cheapflights users on 12/3. 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.
Wed 12/310:55 pmIAD - CGN
2 stops16h 15mMultiple Airlines
Sun 12/76:10 amCGN - IAD
2 stops20h 50mMultiple Airlines
Deal found 12/3$1,185
This Cheapflightsfares deal was found by Cheapflights users on 12/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:05 pmIAD - CGN
2 stops17h 05mLufthansa
Sun 12/217:40 pmCGN - IAD
2 stops24h 55mLufthansa
Deal found 12/2$1,245
This Gotogate deal was found by Cheapflights users on 12/3. 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 12/39:15 pmIAD - CGN
1 stop31h 20mTurkish Airlines
Sun 12/76:15 pmCGN - IAD
1 stop23h 30mTurkish Airlines
Deal found 12/3$1,280
This Ovago deal was found by Cheapflights users on 12/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:05 pmIAD - CGN
2 stops17h 05mMultiple Airlines
Sun 12/218:20 pmCGN - IAD
1 stop24h 20mMultiple Airlines
Deal found 12/2$1,306

Find 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$519
(oojo)

One-way from

$257
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,009
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Cologne Köln/Bonn flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Cologne Köln/Bonn flights.
Search Deals
From Washington, D.C. Dulles Intl to Cologne Köln/Bonn
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Cologne Köln/Bonn
Search Deals
High demand for flights, 7% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 4, 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

Fri 2/6

6:20 pm-4:20 pm

1 stop16h 00m

Cologne Köln/Bonn

Thu 2/19

5:05 pm-3:35 pm

1 stop28h 30m

$546

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Sun 1/18

9:45 pm-4:30 pm

1 stop12h 45m

Cologne Köln/Bonn

Sun 1/25

4:35 pm-7:55 pm

1 stop33h 20m

$569

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Sun 3/29

1:20 pm-1:50 pm

1 stop18h 30m

Cologne Köln/Bonn

Tue 4/7

7:10 pm-7:45 pm

1 stop30h 35m

$644

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Fri 2/6

9:45 pm-4:20 pm

1 stop12h 35m

Cologne Köln/Bonn

Fri 2/20

4:35 pm-3:35 pm

1 stop29h 00m

$657

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Wed 1/21

7:40 pm-9:25 pm

2 stops19h 45m

Cologne Köln/Bonn

Tue 1/27

7:40 pm-6:30 pm

3 stops28h 50m

$667

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Wed 2/11

5:46 pm-4:10 pm

2 stops16h 24m

Cologne Köln/Bonn

Tue 2/24

5:05 pm-3:35 pm

1 stop28h 30m

$687

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Sat 5/2

9:40 pm-1:50 pm

1 stop34h 10m

Cologne Köln/Bonn

Tue 5/12

10:30 am-11:35 am

1 stop31h 05m

$691

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Wed 1/21

5:46 pm-4:10 pm

2 stops16h 24m

Cologne Köln/Bonn

Mon 2/2

5:15 pm-3:35 pm

1 stop28h 20m

$712

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Mon 2/2

1:31 pm-7:15 pm

3 stops47h 44m

$257

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Wed 1/21

9:45 pm-4:10 pm

1 stop12h 25m

$415

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 16 results
1
2

Compare providers for flights from Dulles Intl to Cologne

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 Dulles Intl to Cologne in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 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 Washington, D.C. Dulles Intl Airport-Cologne flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Cologne flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Cologne flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Cologne 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 Washington, D.C. Dulles Intl Airport-Cologne 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 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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Cologne (average of $472). Flying from Washington, D.C. Dulles Intl Airport to Cologne in June is currently the most expensive (average of $620). 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 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 December 4, 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
9,064 reviews

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,064 reviews
United Airlines
7.4
Good
9,064 reviews

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Lufthansa
6.8
Okay
7,612 reviews
United Airlines
7.4
Good
9,064 reviews

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
British Airways
6.7
Okay
7,559 reviews
United Airlines
7.4
Good
9,064 reviews

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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 16h. British Airways provides one of the quickest options available for as low as $546. Washington, D.C. Dulles Intl Airport and Cologne are separated by a distance of 3986 mi. This flight may include one or multiple stops.

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

    British Airways, at $591, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Cologne.Alternate airlines to your destination round-trip include United Airlines and Lufthansa. British Airways is currently priced 23% 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, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Cologne (average of $472). Flying from Washington, D.C. Dulles Intl Airport to Cologne in June is currently the most expensive (average of $620). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Cologne

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Frankfurt flights
Dulles Intl to Munich flights
Baltimore to Frankfurt flights
Reagan-National to Frankfurt flights
Dulles Intl to Berlin flights
Baltimore to Munich flights
Reagan-National to Munich flights
Baltimore to Berlin flights
Reagan-National to Berlin flights
Dulles Intl to Duesseldorf Intl flights
Baltimore to Duesseldorf Intl flights
Dulles Intl to Hamburg flights
Reagan-National to Duesseldorf Intl flights
Dulles Intl to Stuttgart flights
Baltimore to Frankfurt-Hahn flights
Reagan-National to Cologne flights
Baltimore to Hamburg flights
Reagan-National to Hamburg flights
Baltimore to Cologne flights
Reagan-National to Stuttgart flights
Baltimore to Stuttgart flights
Dulles Intl to Nuremberg flights
Reagan-National to Hannover flights
Baltimore to Nuremberg flights
Dulles Intl to Dresden flights
Dulles Intl to Weeze flights
Dulles Intl to Hannover flights
Reagan-National to Nuremberg flights
Reagan-National to Dresden flights
Dulles Intl to Bremen flights
Baltimore to Hannover flights
Baltimore to Bremen flights
Baltimore to Leipzig flights
Baltimore to Dresden flights
Baltimore to Dortmund flights
Baltimore to Saarbruecken flights
Dulles Intl to Leipzig flights
Dulles Intl to Friedrichshafen flights
Dulles Intl to Karlsruhe flights
Baltimore to Friedrichshafen flights
Baltimore to Memmingen flights
Dulles Intl to Dortmund flights
Baltimore to Münster flights

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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$591Average$735FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$634Average$1,185FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$678Average$879FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.