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$526+ Cheap flights from Cologne (CGN) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — SEA
juin 17 — juin 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Cologne to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Cologne (CGN) to Seattle (SEA). 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 juin 12, 2025.

Round-trip from

$526
(Flighttix)

Popular in

July

Cheapest in

November

Average price

$550
From Cologne Köln/Bonn to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 5% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 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 Cologne to Seattle

Cheapest flights from Cologne to Seattle
Explore the most affordable flight options available from Cologne to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juin 12, 2025.

This Flighttix deal was found by Cheapflights users on 6/11. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/19:15 pmCGN - SEA
1 stop22h 55mBritish Airways
dim. 9/141:30 pmSEA - CGN
2 stops21h 55mBritish Airways
Deal found 6/11$526
This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 6/217:05 amCGN - SEA
2 stops22h 36mAir Canada
sam. 7/52:55 pmSEA - CGN
2 stops15h 55mAir Canada
Deal found 6/11$622
This Lufthansa deal was found by Cheapflights users on 6/11. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 6/226:05 amCGN - SEA
1 stop19h 54mLufthansa
mer. 7/26:50 pmSEA - CGN
1 stop19h 20mLufthansa
Deal found 6/11$624
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/2412:55 pmCGN - SEA
2 stops18h 20mUnited Airlines
ven. 7/46:50 pmSEA - CGN
1 stop12h 00mUnited Airlines
Deal found 6/11$630
This Sembo deal was found by Cheapflights users on 6/12. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/16:05 amCGN - SEA
2 stops25h 11mMultiple Airlines
mer. 7/166:50 pmSEA - CGN
1 stop12h 00mMultiple Airlines
Deal found 6/12$699
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/2310:50 amCGN - SEA
2 stops18h 13mAmerican Airlines
lun. 6/307:50 amSEA - CGN
2 stops27h 40mAmerican Airlines
Deal found 6/11$724
This flugladen.de deal was found by Cheapflights users on 6/11. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 6/192:50 pmCGN - SEA
1 stop35h 25mTurkish Airlines
jeu. 6/2612:30 pmSEA - CGN
1 stop20h 40mTurkish Airlines
Deal found 6/11$896
This Billigflug deal was found by Cheapflights users on 6/11. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 7/267:05 amCGN - SEA
1 stop16h 45mSWISS
sam. 8/24:20 pmSEA - CGN
1 stop20h 15mSWISS
Deal found 6/11$1,027

Cheapflights Fare Finder

Customize your flight search to find flights from Cologne to Seattle 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 juin 12, 2025.
Use the filters below to find and compare flights from Cologne to Seattle that are best for you.

Fly from

Cologne

Fly to

Seattle

Route

Depart

Return

Price

CologneSeattle

CGN - SEA

CGNSEA

Cologne Köln/Bonn

lun. 9/1

9:15 pm-11:10 am

1 stop22h 55m

Seattle/Tacoma Intl

dim. 9/14

1:30 pm-8:25 pm

2 stops21h 55m

$526

CologneSeattle

CGN - SEA

CGNSEA

Cologne Köln/Bonn

lun. 9/1

9:15 pm-9:36 pm

2 stops33h 21m

Seattle/Tacoma Intl

dim. 9/14

3:00 pm-8:25 pm

2 stops20h 25m

$580

CologneSeattle

CGN - SEA

CGNSEA

Cologne Köln/Bonn

mar. 6/24

6:50 am-8:41 pm

2 stops22h 51m

Seattle/Tacoma Intl

jeu. 7/3

10:00 am-3:50 pm

2 stops20h 50m

$622

CologneSeattle

CGN - SEA

CGNSEA

Cologne Köln/Bonn

dim. 6/22

6:05 am-4:59 pm

1 stop19h 54m

Seattle/Tacoma Intl

mer. 7/2

6:50 pm-11:10 pm

1 stop19h 20m

$624

CologneSeattle

CGN - SEA

CGNSEA

Cologne Köln/Bonn

mar. 6/24

12:55 pm-10:15 pm

2 stops18h 20m

Seattle/Tacoma Intl

ven. 7/4

6:50 pm-3:50 pm

1 stop12h 00m

$630

CologneSeattle

CGN - SEA

CGNSEA

Cologne Köln/Bonn

lun. 6/23

10:50 am-8:03 pm

2 stops18h 13m

Seattle/Tacoma Intl

lun. 6/30

7:50 am-8:30 pm

2 stops27h 40m

$724

CologneSeattle

CGN - SEA

CGNSEA

Cologne Köln/Bonn

sam. 7/26

7:05 am-2:50 pm

1 stop16h 45m

Seattle/Tacoma Intl

sam. 8/2

4:20 pm-9:35 pm

1 stop20h 15m

$1,027

CologneSeattle

CGN - SEA

CGNSEA

Cologne Köln/Bonn

lun. 8/25

7:00 am-1:50 pm

2 stops15h 50m

$739

CologneSeattle

CGN - SEA

CGNSEA

Cologne Köln/Bonn

lun. 8/25

9:15 pm-11:10 am

1 stop22h 55m

$780

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Cologne to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Cologne 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 Cologne to Seattle

What is the cheapest month to book a flight from Cologne to Seattle?

Currently, January is the cheapest month in which you can book a flight from Cologne to Seattle (average of $238). Flying from Cologne to Seattle in July is currently the most expensive (average of $391). 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 Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated juin 12, 2025.
Read reviews from past customers who have flown SWISS, United Airlines and American Airlines from Cologne to Seattle. 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.
SWISS
7.5
Good
1,623 reviews

Crew

8.2

Overall

7.5

Food

7.0

Comfort

7.4

Entertainment

6.7

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
SWISS
7.5
Good
1,623 reviews
SWISS
7.5
Good
1,623 reviews

Crew

8.2

Overall

7.5

Food

7.0

Comfort

7.4

Entertainment

6.7

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
United Airlines
7.4
Good
8,790 reviews
SWISS
7.5
Good
1,623 reviews

Crew

8.2

Overall

7.5

Food

7.0

Comfort

7.4

Entertainment

6.7

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
American Airlines
7.2
Good
10,000 reviews
SWISS
7.5
Good
1,623 reviews

Crew

8.2

Overall

7.5

Food

7.0

Comfort

7.4

Entertainment

6.7

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
Air Canada
7.1
Good
9,537 reviews
SWISS
7.5
Good
1,623 reviews

Crew

8.2

Overall

7.5

Food

7.0

Comfort

7.4

Entertainment

6.7

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
Lufthansa
6.8
Okay
7,139 reviews
SWISS
7.5
Good
1,623 reviews

Crew

8.2

Overall

7.5

Food

7.0

Comfort

7.4

Entertainment

6.7

Boarding

7.6

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.

Related info for your journey

Find useful and relevant information for your journey from Cologne to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Cologne to Seattle round-trip?

    British Airways, at $526, was found to be the cheapest airline from Cologne to Seattle.Alternate airlines to your destination round-trip include Air Canada and Lufthansa. British Airways is 19% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

  • How can I find direct flights from Cologne to Seattle?

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

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

    Yes. Cheapflights offers flight deals from Cologne to Seattle 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 Cologne to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Cologne to Seattle (average of $238). Flying from Cologne to Seattle in July is currently the most expensive (average of $391). 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

Traveling to a place near Cologne?

Book flights to Cologne if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

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