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Cheap flights from Washington, D.C. Dulles Intl Airport to Cologne from $550

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Cologne departing on 1/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Cologne

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
6:20 pm - 3:40 pm
IAD
-
CGN
15h 20m1 stop
British Airways Logo
5:15 pm - 3:35 pm
CGN
-
IAD
28h 20m1 stop
$550British Airways
Thu, Jan 15 - Wed, Jan 28
British Airways Logo
6:20 pm - 4:10 pm
IAD
-
CGN
15h 50m1 stop
British Airways Logo
5:15 pm - 7:55 pm
CGN
-
IAD
32h 40m1 stop
$552British Airways
Mon, Jan 12 - Mon, Jan 26
British Airways Logo
9:45 pm - 4:10 pm
IAD
-
CGN
12h 25m1 stop
British Airways Logo
5:15 pm - 3:35 pm
CGN
-
IAD
28h 20m1 stop
$568British Airways
Wed, Jan 28 - Mon, Feb 2
British Airways Logo
9:45 pm - 4:10 pm
IAD
-
CGN
12h 25m1 stop
British Airways Logo
5:05 pm - 3:35 pm
CGN
-
IAD
28h 30m1 stop
$571British Airways
Wed, Feb 11 - Tue, Feb 24
Turkish Airlines Logo
2:30 pm - 5:15 pm
IAD
-
CGN
21h 45m1 stop
Turkish Airlines Logo
7:10 pm - 7:45 pm
CGN
-
IAD
30h 35m1 stop
$620Turkish Airlines
Tue, Mar 24 - Wed, Apr 8
Turkish Airlines Logo
9:15 pm - 10:35 am
IAD
-
CGN
31h 20m1 stop
Turkish Airlines Logo
11:35 am - 11:45 am
CGN
-
IAD
30h 10m1 stop
$626Turkish Airlines
Fri, Feb 6 - Fri, Feb 20
Turkish Airlines Logo
9:15 pm - 10:35 am
IAD
-
CGN
31h 20m1 stop
Turkish Airlines Logo
6:15 pm - 7:20 pm
CGN
-
IAD
31h 05m1 stop
$627Turkish Airlines
Fri, Feb 6 - Thu, Feb 19
Turkish Airlines Logo
10:15 pm - 10:35 am
IAD
-
CGN
31h 20m1 stop
Turkish Airlines Logo
10:30 am - 11:35 am
CGN
-
IAD
31h 05m1 stop
$637Turkish Airlines
Tue, Mar 24 - Wed, Apr 8
Turkish Airlines Logo
9:40 pm - 9:30 am
IAD
-
CGN
29h 50m1 stop
Turkish Airlines Logo
10:30 am - 11:35 am
CGN
-
IAD
31h 05m1 stop
$638Turkish Airlines
Sun, Mar 29 - Tue, Apr 7
Turkish Airlines Logo
9:40 pm - 9:30 am
IAD
-
CGN
29h 50m1 stop
Turkish Airlines Logo
10:30 am - 11:35 am
CGN
-
IAD
31h 05m1 stop
$652Turkish Airlines
Sun, Mar 29 - Tue, Apr 7

Turkish Airlines flights from Washington, D.C. Dulles Intl Airport to Cologne

Our best Turkish Airlines deals on Washington, D.C. Dulles Intl Airport to Cologne flight tickets
Turkish Airlines
Mar 24
IAD2:30 pmWashington, D.C. Dulles Intl
15h 05m
1 stop
CGN10:35 amCologne Köln/Bonn
Apr 8
CGN7:10 pmCologne Köln/Bonn
22h 25m
1 stop
IAD11:35 amWashington, D.C. Dulles Intl
$620
Find similar
Turkish Airlines
Feb 6
IAD9:15 pmWashington, D.C. Dulles Intl
31h 20m
1 stop
CGN10:35 amCologne Köln/Bonn
Feb 20
CGN6:15 pmCologne Köln/Bonn
23h 30m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
$627
Find similar
Turkish Airlines
Mar 24
IAD10:15 pmWashington, D.C. Dulles Intl
31h 20m
1 stop
CGN10:35 amCologne Köln/Bonn
Apr 8
CGN10:30 amCologne Köln/Bonn
31h 05m
1 stop
IAD11:35 amWashington, D.C. Dulles Intl
$637
Find similar

Lufthansa flights from Washington, D.C. Dulles Intl Airport to Cologne

Our best Lufthansa deals on Washington, D.C. Dulles Intl Airport to Cologne flight tickets
Lufthansa
Feb 6
IAD6:20 pmWashington, D.C. Dulles Intl
12h 10m
2 stops
CGN12:30 pmCologne Köln/Bonn
Feb 19
CGN9:10 amCologne Köln/Bonn
12h 25m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$802
Find similar
Lufthansa
Dec 24
IAD10:55 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
CGN6:55 pmCologne Köln/Bonn
Dec 31
CGN9:10 amCologne Köln/Bonn
12h 25m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,575
Find similar
Lufthansa
Dec 24
IAD10:15 pmWashington, D.C. Dulles Intl
14h 40m
2 stops
CGN6:55 pmCologne Köln/Bonn
Dec 31
CGN9:10 amCologne Köln/Bonn
12h 25m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,586
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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, momondo users made 832,500 searches. Data last updated December 18, 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

Fly to

Route

Depart

Return

Price

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Thu 1/15

6:20 pm-3:40 pm

1 stop15h 20m

Cologne Köln/Bonn

Wed 1/28

5:15 pm-3:35 pm

1 stop28h 20m

$550

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Mon 1/12

6:20 pm-4:10 pm

1 stop15h 50m

Cologne Köln/Bonn

Mon 1/26

5:15 pm-7:55 pm

1 stop32h 40m

$552

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Wed 1/28

9:45 pm-4:10 pm

1 stop12h 25m

Cologne Köln/Bonn

Mon 2/2

5:15 pm-3:35 pm

1 stop28h 20m

$568

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Wed 2/11

9:45 pm-4:10 pm

1 stop12h 25m

Cologne Köln/Bonn

Tue 2/24

5:05 pm-3:35 pm

1 stop28h 30m

$571

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Tue 3/24

2:30 pm-5:15 pm

1 stop21h 45m

Cologne Köln/Bonn

Wed 4/8

7:10 pm-7:45 pm

1 stop30h 35m

$620

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Fri 2/6

9:15 pm-10:35 am

1 stop31h 20m

Cologne Köln/Bonn

Fri 2/20

11:35 am-11:45 am

1 stop30h 10m

$626

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Fri 2/6

9:15 pm-10:35 am

1 stop31h 20m

Cologne Köln/Bonn

Thu 2/19

6:15 pm-7:20 pm

1 stop31h 05m

$627

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Tue 3/24

10:15 pm-10:35 am

1 stop31h 20m

Cologne Köln/Bonn

Wed 4/8

10:30 am-11:35 am

1 stop31h 05m

$637

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Sun 3/29

9:40 pm-9:30 am

1 stop29h 50m

Cologne Köln/Bonn

Tue 4/7

10:30 am-11:35 am

1 stop31h 05m

$638

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Sun 3/29

9:40 pm-9:30 am

1 stop29h 50m

Cologne Köln/Bonn

Tue 4/7

10:30 am-11:35 am

1 stop31h 05m

$652

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Cologne from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Cologne

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Cologne?

The cheapest month to fly to Cologne from Washington, D.C. Dulles Intl Airport is in November. Flight prices, which tend to average around $474, are often lower during this time because this is during the off-season. If you are unable to visit Cologne during the month of November, then departing from Washington, D.C. Dulles Intl Airport during the month February is also very affordable. Most momondo users find prices during this month for around $571.

What is the cheapest day to depart on your flight to Cologne?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Cologne is on a Saturday when prices can be found for as low as $773. On the other hand, Thursday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,064.

What is the cheapest time of day to depart on your flight to Cologne?

The cheapest time of day to fly to Cologne is in the evening when flights can be purchased for as low as $912. In the afternoon is when there is more demand to fly to Cologne, so prices are often more expensive at around $967 per ticket.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Cologne flights?

You could potentially save up to 84% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Cologne flight.

When to book flights from Washington, D.C. Dulles Intl Airport to Cologne

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Cologne according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Cologne (IAD to CGN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Cologne

Fastest flight time

12h 25m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Cologne takes 12h 25m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Cologne. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Cologne.
Search flight deals

  • How far is Washington, D.C. Dulles Intl to Cologne Köln/Bonn by plane?

    A flight from Washington, D.C. Dulles Intl to Cologne Köln/Bonn will travel around 3976.6 mi. Typically, this will take 12h 25m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Cologne Köln/Bonn Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Cologne Köln/Bonn Airport refresh daily.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Cologne Köln/Bonn Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Cologne Köln/Bonn Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Cologne Köln/Bonn Airport.

  • What documentation or ID do you need to fly to Cologne Köln/Bonn Airport?

    The necessary travel and health documents for your Cologne Köln/Bonn Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Cologne?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Cologne

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Cologne with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $591Free CancellationRating
6.7
7,586 reviews
Search British Airways flights
United AirlinesPriceFrom $634Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
LufthansaPriceFrom $678Free CancellationRating
6.8
7,637 reviews
Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Cologne?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Cologne from Washington, D.C..

Can I find flights from Washington, D.C. to Cologne with flexible booking policies on momondo?

momondo does allow users to show only those flights to Cologne from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington, D.C. to Cologne?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Cologne.

I’m not ready to book a flight from Washington, D.C. to Cologne right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Cologne flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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