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

British Airways, at $526, 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 American Airlines. British Airways is currently priced 34% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Cologne one-way?

The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Cologne are British Airways ($309), Lufthansa ($640), and Turkish Airlines ($693).

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Cologne?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Cologne flight should consider departing on Friday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Cologne ranges from 2.0 - 3.5 inches per month. June is typically the wettest month, when rainfall can reach 3.5 in. February is typically the driest time to visit Cologne when rainfall is around 2.0 in.

If weather is an important factor for your trip to Cologne, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Cologne?

The most popular airlines flying from Washington, D.C. Dulles Intl Airport to Cologne are British Airways, Lufthansa and United Airlines. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Washington, D.C. Dulles Intl Airport to Cologne?

Flying to your destination on a Wednesday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Cologne. Check prices with Cheapflights to find a great deal for your trip.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Cologne. Flights to Cologne from Washington, D.C. Dulles Intl Airport in February are about $860 on average during February, but can be found for as low as $491.

What is the cheapest time of day to fly from IAD to CGN?

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Cologne in the morning. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight at noon.

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.

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.

$297+ Flights from Washington, D.C. Dulles Intl Airport to Cologne

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Cheap flight deals from Dulles Intl to Cologne

Round-trip from	$526 (AirNGo)
One-way from	$297 (Trip.com)
Popular in	November
Cheapest in	December
Average price	$973

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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Highest demand for flights based on searches. 0% potential increase in price ($4 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).

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Average for round-trip flights in June 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 June 30, 2025.

Sun 8/310:40 pmIAD - CGN

1 stop15h 45mBritish Airways

Tue 8/199:15 pmCGN - IAD

1 stop28h 55mBritish Airways

Deal found 6/28

$526

Sun 11/239:00 amIAD - CGN

2 stops21h 05mMultiple Airlines

Thu 12/181:25 pmCGN - IAD

1 stop12h 40mMultiple Airlines

Deal found 6/28

$577

Sun 11/239:00 amIAD - CGN

2 stops21h 05mAir Canada

Thu 12/189:00 amCGN - IAD

2 stops32h 01mAir Canada

Deal found 6/28

$594

Tue 8/1210:20 pmIAD - CGN

1 stop12h 50mLufthansa

Tue 8/198:40 amCGN - IAD

2 stops13h 10mLufthansa

Deal found 6/28

$609

Wed 9/37:21 pmIAD - CGN

2 stops19h 39mAmerican Airlines

Tue 9/233:30 pmCGN - IAD

1 stop30h 30mAmerican Airlines

Deal found 6/29

$626

Wed 9/35:16 pmIAD - CGN

2 stops12h 59mUnited Airlines

Thu 9/1812:55 pmCGN - IAD

1 stop12h 30mUnited Airlines

Deal found 6/30

$639

Best flights from Dulles Intl to Cologne
Discover carefully curated flight deals from Dulles Intl to Cologne that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 30, 2025.

Sun 8/310:40 pmIAD - CGN

1 stop15h 45mBritish Airways

Tue 8/199:15 pmCGN - IAD

1 stop28h 55mBritish Airways

Deal found 6/28

$526

Sun 8/32:25 pmIAD - CGN

2 stops14h 45mMultiple Airlines

Tue 8/198:40 amCGN - IAD

2 stops13h 10mMultiple Airlines

Deal found 6/28

$584

Tue 8/1210:20 pmIAD - CGN

1 stop12h 50mLufthansa

Tue 8/198:40 amCGN - IAD

2 stops13h 10mLufthansa

Deal found 6/28

$609

Wed 9/37:21 pmIAD - CGN

2 stops19h 39mAmerican Airlines

Tue 9/233:30 pmCGN - IAD

1 stop30h 30mAmerican Airlines

Deal found 6/29

$626

Wed 9/35:16 pmIAD - CGN

2 stops12h 59mUnited Airlines

Thu 9/186:05 amCGN - IAD

1 stop15h 00mUnited Airlines

Deal found 6/28

$639

Last-minute flights from Dulles Intl to Cologne
Discover last-minute flight deals from Dulles Intl to Cologne. Data last updated June 30, 2025 and is based on user searches.

Sun 7/61:30 pmIAD - CGN

1 stop18h 20mTurkish Airlines

Fri 7/1110:30 amCGN - IAD

1 stop31h 15mTurkish Airlines

Deal found 6/30

$1,210

Sun 7/610:20 pmIAD - CGN

1 stop12h 50mLufthansa

Fri 7/118:35 amCGN - IAD

2 stops13h 15mLufthansa

Deal found 6/30

$2,106

Mon 7/77:25 pmIAD - CGN

1 stop19h 05mBritish Airways

Mon 7/2110:50 amCGN - IAD

1 stop15h 20mBritish Airways

Deal found 6/29

$832

Mon 7/710:40 pmIAD - CGN

1 stop15h 50mAmerican Airlines

Mon 7/2110:50 amCGN - IAD

2 stops43h 08mAmerican Airlines

Deal found 6/29

$877

Mon 7/72:25 pmIAD - CGN

2 stops15h 50mAir Canada

Tue 7/227:40 amCGN - IAD

2 stops14h 39mAir Canada

Deal found 6/28

$1,369

Wed 7/95:25 pmIAD - CGN

1 stop20h 15mAustrian Airlines

Tue 7/229:35 amCGN - IAD

2 stops55h 35mAustrian Airlines

Deal found 6/28

$1,383

Wed 7/96:10 pmIAD - CGN

2 stops17h 10mSWISS

Mon 7/216:20 amCGN - IAD

2 stops19h 40mSWISS

Deal found 6/29

$2,088

Thu 7/105:50 pmIAD - CGN

1 stop17h 00mMultiple Airlines

Wed 7/166:20 amCGN - IAD

2 stops43h 00mMultiple Airlines

Deal found 6/28

$3,580

Sun 7/201:30 pmIAD - CGN

1 stop22h 45mTurkish Airlines

Wed 7/307:10 pmCGN - IAD

1 stop22h 35mTurkish Airlines

Deal found 6/30

$885

Mon 7/2110:20 pmIAD - CGN

1 stop12h 50mLufthansa

Wed 7/306:05 amCGN - IAD

1 stop15h 15mLufthansa

Deal found 6/30

$861

Tue 7/2210:20 pmIAD - CGN

1 stop12h 50mUnited Airlines

Tue 7/2912:55 pmCGN - IAD

1 stop32h 25mUnited Airlines

Deal found 6/30

$855

Tue 7/2210:20 pmIAD - CGN

1 stop20h 00mMultiple Airlines

Wed 7/306:50 pmCGN - IAD

2 stops32h 00mMultiple Airlines

Deal found 6/30

$994

One-way flights from Dulles Intl to Cologne
Search for one-way flight options from Dulles Intl to Cologne. Find affordable one-way fares based on user searches. Data last updated June 30, 2025.

Tue 7/298:30 pmIAD - CGN

2 stops18h 45mMultiple Airlines

Deal found 6/28

$297

Sat 7/267:25 pmIAD - CGN

1 stop19h 25mBritish Airways

Deal found 6/29

$309

Tue 7/296:10 pmIAD - CGN

3 stops19h 10mLufthansa

Deal found 6/28

$640

Tue 7/159:40 pmIAD - CGN

1 stop14h 30mTurkish Airlines

Deal found 6/28

$693

Cheapflights Fare Finder

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

Sun 8/3

10:40 pm-8:25 pm

1 stop15h 45m

Cologne Köln/Bonn

Tue 8/19

9:15 pm-8:10 pm

1 stop28h 55m

$526

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Sun 11/23

9:00 am-12:05 pm

2 stops21h 05m

Cologne Köln/Bonn

Thu 12/18

1:25 pm-8:05 pm

1 stop12h 40m

$577

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Sun 11/23

9:00 am-12:05 pm

2 stops21h 05m

Cologne Köln/Bonn

Thu 12/18

9:00 am-11:01 am

2 stops32h 01m

$594

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Tue 8/12

10:20 pm-5:10 pm

1 stop12h 50m

Cologne Köln/Bonn

Tue 8/19

8:40 am-3:50 pm

2 stops13h 10m

$609

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Wed 9/3

7:21 pm-9:00 pm

2 stops19h 39m

Cologne Köln/Bonn

Tue 9/23

3:30 pm-4:00 pm

1 stop30h 30m

$626

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Wed 9/3

5:16 pm-12:15 pm

2 stops12h 59m

Cologne Köln/Bonn

Thu 9/18

12:55 pm-7:25 pm

1 stop12h 30m

$639

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Tue 7/29

8:30 pm-9:15 pm

2 stops18h 45m

$297

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Sat 7/26

7:25 pm-8:50 pm

1 stop19h 25m

$309

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Tue 7/29

6:10 pm-7:20 pm

3 stops19h 10m

$640

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

Tue 7/15

9:40 pm-6:10 pm

1 stop14h 30m

$693

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

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 $1,257). 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

Read reviews from past customers who have flown United Airlines, Turkish Airlines, and American Airlines 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

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,852 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Turkish Airlines

7.3

Good

3,884 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

American Airlines

7.2

Good

10,000 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Lufthansa

6.8

Okay

7,200 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

British Airways

6.6

Okay

7,081 reviews

United Airlines

7.4

Good

8,852 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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.
What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Cologne round-trip?
British Airways, at $526, 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 American Airlines. British Airways is currently priced 34% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Cologne one-way?
The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Cologne are British Airways ($309), Lufthansa ($640), and Turkish Airlines ($693).
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 $1,257). 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

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Top 3 airlines flying from Dulles Intl to Cologne

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest$584	Average$796	FlexibilityNo cancel fee	On-time76%
British Airways	Cheapest$621	Average$737	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$757	Average$1,265	FlexibilityNo cancel fee	On-time69%

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$297+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from Dulles Intl to CologneExplore 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 June 30, 2025.

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 June 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Cologne that are best for you.

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.

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?

Reviews of airlines servicing Cologne

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?

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

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Cologne one-way?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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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.

Top 3 airlines flying from Dulles Intl to Cologne

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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 June 30, 2025.