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$401+ Cheap flights from Copenhagen (CPH) to Seattle (SEA)

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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Kastrup Copenhagen to Seattle/Tacoma Intl are usually found in February or January, booked 49 days in advance, depart on a Thursday or Monday and return on a Monday

Cheap flight deals from Copenhagen to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Copenhagen (CPH) 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 August 14, 2025.

Round-trip from

$543
(Finnair)

One-way from

$401
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$676

Good round-trip deal

$901 or less

Good one-way deal

$922 or less
From Kastrup Copenhagen to Seattle/Tacoma Intl
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One-way flight from Kastrup Copenhagen to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 19% potential increase in price ($152 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Kastrup Copenhagen to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Kastrup Copenhagen to Seattle/Tacoma Intl.
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Find flight deals from Copenhagen to Seattle

Cheapest flights from Copenhagen to Seattle
Explore the most affordable flight options available from Copenhagen to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Finnair deal was found by Cheapflights users on 8/14. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:50 amCPH - SEA
2 stops19h 19mFinnair
Fri 10/171:30 pmSEA - CPH
2 stops20h 45mFinnair
Deal found 8/14$543
This Flightsearch deal was found by Cheapflights users on 8/14. 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 Flightsearch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:05 amCPH - SEA
1 stop19h 54mMultiple Airlines
Fri 10/1710:00 amSEA - CPH
2 stops15h 50mMultiple Airlines
Deal found 8/14$544
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Wed 9/36:10 amCPH - SEA
3 stops39h 53mUnited Airlines
Thu 9/187:00 amSEA - CPH
2 stops19h 05mUnited Airlines
Deal found 8/14$546
This Air Canada deal was found by Cheapflights users on 8/13. 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.
Thu 10/912:35 pmCPH - SEA
1 stop31h 24mAir Canada
Mon 10/207:15 pmSEA - CPH
2 stops34h 00mAir Canada
Deal found 8/13$547
This Flightnetwork deal was found by Cheapflights users on 8/13. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1810:35 pmCPH - SEA
1 stop31h 05mIcelandair
Mon 9/111:30 pmSEA - CPH
1 stop28h 25mIcelandair
Deal found 8/13$548
This Air Canada deal was found by Cheapflights users on 8/13. 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.
Sun 11/28:55 amCPH - SEA
2 stops19h 21mAir Canada
Fri 11/145:50 amSEA - CPH
2 stops26h 45mAir Canada
Deal found 8/13$549
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Fri 10/36:05 amCPH - SEA
1 stop19h 54mUnited Airlines
Mon 10/1310:00 amSEA - CPH
2 stops16h 35mUnited Airlines
Deal found 8/13$551
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:00 amCPH - SEA
1 stop14h 45mDelta
Fri 9/199:58 pmSEA - CPH
1 stop23h 32mDelta
Deal found 8/13$552
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Fri 10/36:05 amCPH - SEA
1 stop19h 54mUnited Airlines
Fri 10/177:30 amSEA - CPH
1 stop18h 20mUnited Airlines
Deal found 8/14$553
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Sun 9/2812:25 pmCPH - SEA
2 stops19h 50mUnited Airlines
Sun 10/511:10 amSEA - CPH
2 stops22h 15mUnited Airlines
Deal found 8/14$554
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 10/262:15 pmCPH - SEA
1 stop30h 55mUnited Airlines
Sun 11/93:10 pmSEA - CPH
1 stop17h 25mUnited Airlines
Deal found 8/13$555
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Sun 10/262:15 pmCPH - SEA
1 stop30h 55mUnited Airlines
Mon 11/102:00 pmSEA - CPH
1 stop13h 00mUnited Airlines
Deal found 8/13$558

Cheapflights Fare Finder

 
Customize your flight search to find flights from Copenhagen 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 August 14, 2025.
Use the filters below to find and compare flights from Copenhagen to Seattle that are best for you.

Fly from

Copenhagen

Fly to

Seattle

Route

Depart

Return

Price

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 10/3

8:50 am-7:09 pm

2 stops19h 19m

Seattle/Tacoma Intl

Fri 10/17

1:30 pm-7:15 pm

2 stops20h 45m

$543

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 10/3

6:05 am-4:59 pm

1 stop19h 54m

Seattle/Tacoma Intl

Fri 10/17

10:00 am-10:50 am

2 stops15h 50m

$544

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 9/28

6:05 am-8:44 pm

2 stops23h 39m

Seattle/Tacoma Intl

Sun 10/5

4:47 pm-10:50 am

2 stops33h 03m

$546

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 9/27

9:00 am-10:25 pm

1 stop22h 25m

Seattle/Tacoma Intl

Mon 11/3

11:43 am-1:10 pm

2 stops16h 27m

$546

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 9/3

6:10 am-1:03 pm

3 stops39h 53m

Seattle/Tacoma Intl

Thu 9/18

7:00 am-11:05 am

2 stops19h 05m

$546

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 10/9

12:35 pm-10:59 am

1 stop31h 24m

Seattle/Tacoma Intl

Mon 10/20

7:15 pm-2:15 pm

2 stops34h 00m

$547

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 10/9

12:35 pm-10:59 am

1 stop31h 24m

Seattle/Tacoma Intl

Thu 10/23

10:00 am-2:15 pm

2 stops19h 15m

$547

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 10/5

12:45 pm-7:31 pm

2 stops39h 46m

Seattle/Tacoma Intl

Tue 10/14

10:00 am-2:15 pm

2 stops19h 15m

$547

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 11/11

9:10 pm-2:20 pm

3 stops50h 10m

$401

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 9/16

6:55 am-8:29 pm

3 stops46h 34m

$423

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 18 results
1
2

The best insider tips for Copenhagen to Seattle flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Copenhagen to Seattle trip
Airports
CPH

CPH offers free and fast Wi-Fi. Look for 'CPH Airport Free WI-FI'. Power points are scattered around, with more near the B gates.

Read more about CPHby John Walton
SEA

Use the Link light rail for an affordable trip to downtown Seattle from SEA. It runs every 10 minutes and takes less than 40 minutes.

Read more about SEAby Brandon Schultz
Our travel experts
John Walton

John Walton

Expert on CPH

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Best time to book a flight from Copenhagen to Seattle

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

How far ahead should I book a flight from Copenhagen to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Copenhagen to Seattle. Price data was last updated on August 8, 2025.

Booking 49 days in advance of your planned departure date is, on average, the best time to get cheap flights from Copenhagen to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Copenhagen to Seattle (average of $238). Flying from Copenhagen to Seattle in June is currently the most expensive (average of $389). 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.

What is the cheapest time of day to fly from CPH to SEA?

Find hourly flight availability from Copenhagen to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

It’s typically best to fly out from Copenhagen to Seattle in the evening. Doing so could potentially save you 39% on the flight price compared to flying at noon, which is usually more expensive.

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 August 14, 2025.
Read reviews from past customers who have flown Scandinavian Airlines, American Airlines, and Icelandair from Copenhagen 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.
Scandinavian Airlines
7.4
Good
1,468 reviews

Crew

8.0

Boarding

7.6

Food

6.6

Overall

7.4

Entertainment

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.
Scandinavian Airlines
7.4
Good
1,468 reviews
Scandinavian Airlines
7.4
Good
1,468 reviews

Crew

8.0

Boarding

7.6

Food

6.6

Overall

7.4

Entertainment

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.
American Airlines
7.2
Good
10,000 reviews
Scandinavian Airlines
7.4
Good
1,468 reviews

Crew

8.0

Boarding

7.6

Food

6.6

Overall

7.4

Entertainment

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.
Icelandair
7.0
Good
526 reviews
Scandinavian Airlines
7.4
Good
1,468 reviews

Crew

8.0

Boarding

7.6

Food

6.6

Overall

7.4

Entertainment

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.
Lufthansa
6.8
Okay
7,317 reviews
Scandinavian Airlines
7.4
Good
1,468 reviews

Crew

8.0

Boarding

7.6

Food

6.6

Overall

7.4

Entertainment

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.
British Airways
6.7
Okay
7,266 reviews
Scandinavian Airlines
7.4
Good
1,468 reviews

Crew

8.0

Boarding

7.6

Food

6.6

Overall

7.4

Entertainment

6.6

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.

Related info for your journey

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

  • What airports do I use to fly from Copenhagen to Seattle?

    If you book a flight from Copenhagen to Seattle, you will be flying from Kastrup Copenhagen to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from Kastrup Copenhagen (CPH) take 9h 45m for a nonstop flight. There is 1 flight from Kastrup Copenhagen to Seattle per day from 6 airlines.

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

    According to our current data, Icelandair ($432), American Airlines ($456), and British Airways ($463) offers the cheapest pricing from Copenhagen to Seattle. You may be able to fly from Copenhagen to Seattle for 29% less than the average price by searching for these airlines.

  • What are the cheapest flights from Copenhagen to Seattle?

    While on average a flight from Copenhagen to Seattle is generally $1,021, our data shows the cheapest flight currently is $600. When looking at the most popular route, (Kastrup Copenhagen - Seattle/Tacoma Intl), you can expect to pay $499 for that flight.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Copenhagen to Seattle (average of $238). Flying from Copenhagen to Seattle in June is currently the most expensive (average of $389). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Ocean Shores
Lakewood
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Lacey
Leavenworth
Renton
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Puyallup
Kent
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Shelton

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Alternative routes for Copenhagen to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Copenhagen to Portland flights
Billund to Seattle flights

Top 6 airlines flying from Copenhagen to Seattle

Discover the top 6 airlines that operate flights from Copenhagen to Seattle. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$432Average$588FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$456Average$556FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$463Average$554FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$483Average$717FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$516Average$658FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$600Average$808FlexibilityNo cancel feeOn-time77%

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