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

British Airways, at $604, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Cologne.Alternate airlines to your destination round-trip include Air Canada and American Airlines. British Airways is currently priced 26% 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 American Airlines ($359), British Airways ($369), and Austrian Airlines ($668).

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.

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 $869 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.

$261+ 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	$598 (Billigflug)
One-way from	$261 (Kiwi.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. 10% potential increase in price ($93 potential increase over avg. RT price).

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Cheapest flight prices on average. 6% potential price decrease ($50 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 junio 12, 2025.

dom. 10/2611:55 pmIAD - CGN

1 stop12h 15mMultiple Airlines

dom. 11/28:20 pmCGN - IAD

1 stop24h 20mMultiple Airlines

Deal found 6/10

$280

sáb. 8/210:45 pmIAD - CGN

1 stop16h 05mBritish Airways

vie. 8/1510:00 pmCGN - IAD

1 stop28h 15mBritish Airways

Deal found 6/10

$604

mié. 9/39:45 amIAD - CGN

2 stops19h 25mAir Canada

jue. 9/186:20 amCGN - IAD

2 stops20h 45mAir Canada

Deal found 6/10

$610

sáb. 8/210:45 pmIAD - CGN

1 stop16h 05mAmerican Airlines

vie. 8/152:20 pmCGN - IAD

1 stop33h 15mAmerican Airlines

Deal found 6/10

$619

mié. 10/110:20 pmIAD - CGN

1 stop11h 30mLufthansa

mié. 10/812:55 pmCGN - IAD

1 stop12h 30mLufthansa

Deal found 6/11

$659

vie. 9/261:30 pmIAD - CGN

1 stop18h 20mTurkish Airlines

vie. 10/37:10 pmCGN - IAD

1 stop22h 35mTurkish Airlines

Deal found 6/10

$692

dom. 9/285:25 pmIAD - CGN

1 stop20h 15mAustrian Airlines

dom. 10/58:50 pmCGN - IAD

1 stop23h 45mAustrian Airlines

Deal found 6/10

$740

lun. 7/215:40 pmIAD - CGN

1 stop12h 35mUnited Airlines

vie. 8/16:05 amCGN - IAD

2 stops30h 59mUnited Airlines

Deal found 6/10

$751

lun. 8/48:45 pmIAD - CGN

1 stop18h 50mSWISS

jue. 8/146:20 amCGN - IAD

2 stops14h 05mSWISS

Deal found 6/12

$852

jue. 9/2512:00 pmIAD - CGN

2 stops23h 35mEgyptair

dom. 9/283:10 amCGN - IAD

2 stops32h 00mEgyptair

Deal found 6/10

$1,728

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 junio 12, 2025.

lun. 8/410:20 pmIAD - CGN

1 stop12h 50mMultiple Airlines

mié. 8/208:35 amCGN - IAD

1 stop12h 45mMultiple Airlines

Deal found 6/11

$598

sáb. 8/210:45 pmIAD - CGN

1 stop16h 05mBritish Airways

vie. 8/1510:00 pmCGN - IAD

1 stop28h 15mBritish Airways

Deal found 6/10

$604

mié. 9/39:45 amIAD - CGN

2 stops19h 25mAir Canada

jue. 9/186:20 amCGN - IAD

2 stops20h 45mAir Canada

Deal found 6/10

$610

sáb. 8/210:45 pmIAD - CGN

1 stop16h 05mAmerican Airlines

vie. 8/152:20 pmCGN - IAD

1 stop33h 15mAmerican Airlines

Deal found 6/10

$619

lun. 8/410:20 pmIAD - CGN

1 stop12h 50mLufthansa

mié. 8/2012:55 pmCGN - IAD

1 stop12h 30mLufthansa

Deal found 6/10

$706

lun. 7/215:40 pmIAD - CGN

1 stop12h 35mUnited Airlines

vie. 8/16:05 amCGN - IAD

2 stops30h 59mUnited Airlines

Deal found 6/10

$751

lun. 8/48:45 pmIAD - CGN

1 stop18h 50mSWISS

jue. 8/146:20 amCGN - IAD

2 stops14h 05mSWISS

Deal found 6/12

$852

jue. 6/261:30 pmIAD - CGN

1 stop22h 40mTurkish Airlines

jue. 7/107:10 pmCGN - IAD

1 stop22h 35mTurkish Airlines

Deal found 6/11

$1,288

lun. 8/45:45 pmIAD - CGN

2 stops22h 05mAustrian Airlines

jue. 8/146:30 amCGN - IAD

2 stops14h 55mAustrian Airlines

Deal found 6/12

$1,647

Last-minute flights from Dulles Intl to Cologne
Discover last-minute flight deals from Dulles Intl to Cologne. Data last updated junio 12, 2025 and is based on user searches.

sáb. 6/215:07 pmIAD - CGN

3 stops17h 13mMultiple Airlines

dom. 8/37:25 pmCGN - IAD

2 stops32h 00mMultiple Airlines

Deal found 6/11

$1,296

sáb. 6/2110:45 pmIAD - CGN

1 stop16h 05mBritish Airways

dom. 8/39:35 pmCGN - IAD

1 stop24h 20mBritish Airways

Deal found 6/11

$1,472

sáb. 6/219:40 pmIAD - CGN

1 stop34h 10mTurkish Airlines

dom. 8/310:30 amCGN - IAD

1 stop31h 15mTurkish Airlines

Deal found 6/10

$1,780

sáb. 6/215:12 pmIAD - CGN

2 stops16h 38mAir Canada

dom. 8/31:35 pmCGN - IAD

2 stops26h 02mAir Canada

Deal found 6/11

$2,096

sáb. 6/218:45 pmIAD - CGN

2 stops14h 25mUnited Airlines

dom. 8/36:05 amCGN - IAD

2 stops16h 15mUnited Airlines

Deal found 6/10

$2,109

jue. 6/261:30 pmIAD - CGN

1 stop22h 40mTurkish Airlines

jue. 7/102:50 pmCGN - IAD

1 stop26h 55mTurkish Airlines

Deal found 6/12

$1,288

lun. 6/305:31 pmIAD - CGN

2 stops35h 39mAir Canada

vie. 7/116:20 amCGN - IAD

2 stops39h 59mAir Canada

Deal found 6/12

$1,392

jue. 7/1010:20 pmIAD - CGN

1 stop13h 15mLufthansa

jue. 7/1712:55 pmCGN - IAD

1 stop12h 30mLufthansa

Deal found 6/12

$825

jue. 7/105:13 pmIAD - CGN

2 stops35h 37mAustrian Airlines

jue. 7/176:30 amCGN - IAD

2 stops39h 40mAustrian Airlines

Deal found 6/12

$1,910

lun. 7/215:40 pmIAD - CGN

1 stop12h 35mUnited Airlines

vie. 8/16:05 amCGN - IAD

2 stops30h 59mUnited Airlines

Deal found 6/10

$751

lun. 7/211:19 pmIAD - CGN

2 stops19h 01mAmerican Airlines

vie. 8/12:20 pmCGN - IAD

1 stop11h 50mAmerican Airlines

Deal found 6/10

$963

mié. 7/2310:40 pmIAD - CGN

1 stop16h 20mBritish Airways

mar. 8/59:15 pmCGN - IAD

1 stop28h 55mBritish Airways

Deal found 6/12

$752

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 junio 12, 2025.

dom. 7/279:58 pmIAD - CGN

2 stops42h 22mMultiple Airlines

Deal found 6/11

$261

lun. 9/87:25 pmIAD - CGN

1 stop19h 05mAmerican Airlines

Deal found 6/11

$359

dom. 9/75:50 pmIAD - CGN

1 stop20h 35mBritish Airways

Deal found 6/11

$369

vie. 7/115:25 pmIAD - CGN

1 stop11h 25mAustrian Airlines

Deal found 6/10

$668

lun. 6/2310:20 pmIAD - CGN

1 stop11h 30mLufthansa

Deal found 6/9

$713

sáb. 6/219:40 pmIAD - CGN

1 stop34h 10mTurkish Airlines

Deal found 6/10

$844

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

dom. 10/26

11:55 pm-5:10 pm

1 stop12h 15m

Cologne Köln/Bonn

dom. 11/2

8:20 pm-2:40 pm

1 stop24h 20m

$280

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

sáb. 8/2

10:45 pm-8:50 pm

1 stop16h 05m

Cologne Köln/Bonn

vie. 8/15

10:00 pm-8:15 pm

1 stop28h 15m

$604

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

mié. 9/3

9:45 am-11:10 am

2 stops19h 25m

Cologne Köln/Bonn

jue. 9/18

6:20 am-9:05 pm

2 stops20h 45m

$610

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

sáb. 8/2

10:45 pm-8:50 pm

1 stop16h 05m

Cologne Köln/Bonn

vie. 8/15

2:20 pm-5:35 pm

1 stop33h 15m

$619

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

mié. 10/1

10:20 pm-3:50 pm

1 stop11h 30m

Cologne Köln/Bonn

mié. 10/8

12:55 pm-7:25 pm

1 stop12h 30m

$659

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

vie. 9/26

1:30 pm-1:50 pm

1 stop18h 20m

Cologne Köln/Bonn

vie. 10/3

7:10 pm-11:45 am

1 stop22h 35m

$692

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

dom. 9/28

5:25 pm-7:40 pm

1 stop20h 15m

Cologne Köln/Bonn

dom. 10/5

8:50 pm-2:35 pm

1 stop23h 45m

$740

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

lun. 7/21

5:40 pm-12:15 pm

1 stop12h 35m

Cologne Köln/Bonn

vie. 8/1

6:05 am-7:04 am

2 stops30h 59m

$751

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

lun. 8/4

8:45 pm-9:35 pm

1 stop18h 50m

Cologne Köln/Bonn

jue. 8/14

6:20 am-2:25 pm

2 stops14h 05m

$852

Washington, D.C.Cologne

IAD - CGN

IADCGN

Washington, D.C. Dulles Intl

jue. 9/25

12:00 pm-5:35 pm

2 stops23h 35m

Cologne Köln/Bonn

dom. 9/28

3:10 am-5:10 am

2 stops32h 00m

$1,728

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 18 results

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 $1,307). 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.

Rainfall in Cologne by month

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.

Temperature in Cologne by month

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).

Reviews of airlines servicing Cologne

Read through reviews of airlines operating flights from Washington, D.C. to Cologne, such as Austrian Airlines, SWISS and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Austrian Airlines

7.6

Good

802 reviews

Reviews

1 / 20

8.0

Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

Austrian Airlines

7.6

Good

802 reviews

Austrian Airlines

7.6

Good

802 reviews

Reviews

1 / 20

8.0

Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

SWISS

7.5

Good

1,623 reviews

Austrian Airlines

7.6

Good

802 reviews

Reviews

1 / 20

8.0

Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

United Airlines

7.4

Good

8,790 reviews

Austrian Airlines

7.6

Good

802 reviews

Reviews

1 / 20

8.0

Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

Turkish Airlines

7.3

Good

3,848 reviews

Austrian Airlines

7.6

Good

802 reviews

Reviews

1 / 20

8.0

Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

American Airlines

7.2

Good

10,000 reviews

Austrian Airlines

7.6

Good

802 reviews

Reviews

1 / 20

8.0

Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

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 $604, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Cologne.Alternate airlines to your destination round-trip include Air Canada and American Airlines. British Airways is currently priced 26% 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 American Airlines ($359), British Airways ($369), and Austrian Airlines ($668).
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 $1,307). 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

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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$261+ 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Cologne with Cheapflights

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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 junio 12, 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 junio 12, 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?

Rainfall in Cologne by month

Plan your trip to Cologne by taking into account the average rainfall totals by month.

Temperature in Cologne by month

Plan your trip to Cologne by taking into account the average temperature totals by month.

Reviews of airlines servicing Cologne

Read through reviews of airlines operating flights from Washington, D.C. to Cologne, such as Austrian Airlines, SWISS and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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

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.

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 junio 12, 2025.