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$333+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
1 adult, Economy
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Find cheap flights from Copenhagen to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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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 Tuesday

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 November 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$519
(British Airways)

One-way from

$334
(Finnair)

Popular in

July

Cheapest in

February

Average price

$540

Good one-way deal

$735 or less
Provider with most accurate pricing for Kastrup Copenhagen-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Kastrup Copenhagen-Seattle/Tacoma Intl flights.
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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. 18% potential increase in price ($141 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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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 November 18, 2025.

This United Airlines deal was found by Cheapflights users on 11/16. 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 12/126:50 amCPH - SEA
2 stops23h 10mUnited Airlines
Mon 12/159:25 amSEA - CPH
3 stops42h 00mUnited Airlines
Deal found 11/16$596
This United Airlines deal was found by Cheapflights users on 11/17. 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.
Mon 12/1510:10 amCPH - SEA
1 stop35h 00mUnited Airlines
Wed 1/73:10 pmSEA - CPH
1 stop17h 25mUnited Airlines
Deal found 11/17$611
This United Airlines deal was found by Cheapflights users on 11/16. 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 12/1410:05 amCPH - SEA
2 stops45h 23mUnited Airlines
Sat 12/2711:15 pmSEA - CPH
2 stops33h 15mUnited Airlines
Deal found 11/16$652
This United Airlines deal was found by Cheapflights users on 11/17. 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.
Mon 12/152:20 pmCPH - SEA
1 stop30h 50mUnited Airlines
Tue 1/62:00 pmSEA - CPH
1 stop14h 35mUnited Airlines
Deal found 11/17$663
This American Airlines deal was found by Cheapflights users on 11/18. 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.
Sun 12/1411:50 amCPH - SEA
2 stops20h 35mAmerican Airlines
Wed 12/3111:20 amSEA - CPH
2 stops25h 30mAmerican Airlines
Deal found 11/18$680
This Delta deal was found by Cheapflights users on 11/17. 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.
Mon 12/156:00 amCPH - SEA
2 stops21h 36mDelta
Thu 1/11:40 pmSEA - CPH
1 stop18h 20mDelta
Deal found 11/17$703
This United Airlines deal was found by Cheapflights users on 11/17. 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 12/1410:05 amCPH - SEA
1 stop35h 05mUnited Airlines
Wed 1/73:10 pmSEA - CPH
1 stop17h 25mUnited Airlines
Deal found 11/17$708
This Delta deal was found by Cheapflights users on 11/18. 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 12/126:00 amCPH - SEA
2 stops18h 35mDelta
Thu 1/11:40 pmSEA - CPH
1 stop18h 20mDelta
Deal found 11/18$709
This United Airlines deal was found by Cheapflights users on 11/17. 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.
Mon 12/1510:10 amCPH - SEA
1 stop35h 00mUnited Airlines
Thu 1/12:00 pmSEA - CPH
1 stop19h 20mUnited Airlines
Deal found 11/17$710
This British Airways deal was found by Cheapflights users on 11/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:55 amCPH - SEA
1 stop13h 35mBritish Airways
Wed 12/316:50 pmSEA - CPH
1 stop18h 00mBritish Airways
Deal found 11/18$728
This Icelandair deal was found by Cheapflights users on 11/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:15 amCPH - SEA
1 stop19h 45mIcelandair
Wed 1/72:35 pmSEA - CPH
1 stop20h 15mIcelandair
Deal found 11/17$730

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 November 18, 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

Thu 4/2

9:25 am-3:50 pm

1 stop15h 25m

Seattle/Tacoma Intl

Sun 4/5

7:30 am-11:05 am

2 stops18h 35m

$589

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 12/12

6:50 am-12:10 pm

1 stop14h 20m

Seattle/Tacoma Intl

Mon 12/15

9:25 am-12:25 pm

3 stops42h 00m

$596

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 1/11

8:05 am-2:49 pm

1 stop15h 44m

Seattle/Tacoma Intl

Sat 1/24

4:45 pm-1:10 pm

1 stop35h 25m

$609

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 12/15

10:10 am-12:10 pm

1 stop35h 00m

Seattle/Tacoma Intl

Wed 1/7

3:10 pm-5:35 pm

1 stop17h 25m

$611

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 1/11

7:50 pm-10:20 pm

2 stops35h 30m

Seattle/Tacoma Intl

Sat 1/24

8:04 am-5:40 pm

2 stops24h 36m

$683

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 12/12

6:00 am-3:35 pm

2 stops18h 35m

Seattle/Tacoma Intl

Thu 1/1

1:40 pm-5:00 pm

1 stop18h 20m

$709

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 12/15

10:10 am-12:10 pm

1 stop35h 00m

Seattle/Tacoma Intl

Thu 1/1

2:00 pm-6:20 pm

1 stop19h 20m

$710

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 5/13

7:20 am-11:35 am

1 stop13h 15m

$334

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 2/3

6:25 am-11:30 am

1 stop14h 05m

$334

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 3/23

8:25 pm-12:30 pm

1 stop24h 05m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 16 results
1
2

Compare providers for flights from Copenhagen to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Copenhagen to Seattle in November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Copenhagen-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Copenhagen-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Copenhagen-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Copenhagen-Seattle flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Copenhagen-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 November 14, 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 $402). Flying from Copenhagen to Seattle in July is currently the most expensive (average of $591). 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 November 18, 2025.

It’s typically best to fly out from Copenhagen to Seattle in the evening. Doing so could potentially save you 40% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip from Copenhagen to Seattle?

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

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 November 18, 2025.
Read reviews from past customers who have flown Scandinavian Airlines, United 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
1,583 reviews

Comfort

7.3

Entertainment

6.7

Overall

7.4

Boarding

7.6

Food

6.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Scandinavian Airlines
7.4
Good
1,583 reviews
Scandinavian Airlines
7.4
Good
1,583 reviews

Comfort

7.3

Entertainment

6.7

Overall

7.4

Boarding

7.6

Food

6.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
United Airlines
7.4
Good
9,019 reviews
Scandinavian Airlines
7.4
Good
1,583 reviews

Comfort

7.3

Entertainment

6.7

Overall

7.4

Boarding

7.6

Food

6.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Icelandair
7.0
Good
580 reviews
Scandinavian Airlines
7.4
Good
1,583 reviews

Comfort

7.3

Entertainment

6.7

Overall

7.4

Boarding

7.6

Food

6.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Lufthansa
6.8
Okay
7,576 reviews
Scandinavian Airlines
7.4
Good
1,583 reviews

Comfort

7.3

Entertainment

6.7

Overall

7.4

Boarding

7.6

Food

6.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
British Airways
6.7
Okay
7,532 reviews
Scandinavian Airlines
7.4
Good
1,583 reviews

Comfort

7.3

Entertainment

6.7

Overall

7.4

Boarding

7.6

Food

6.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

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.

  • How long is the flight from Copenhagen to Seattle?

    There are many flights that can get you from Copenhagen to Seattle in 19h 30m. Fly via British Airways, Icelandair, or American Airlines to get the fastest option. Copenhagen and Seattle are separated by a distance of 4850 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, Icelandair ($432), American Airlines ($462), and British Airways ($463) offers the cheapest pricing from Copenhagen to Seattle. You may be able to fly from Copenhagen to Seattle for 31% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Copenhagen to Seattle?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Copenhagen to Seattle on time: Scandinavian Airlines (53%), Delta (53%), Air France (50%).

  • What are the cheapest flights from Copenhagen to Seattle?

    While on average a flight from Copenhagen to Seattle is generally $735, our data shows the cheapest flight currently is $652. When looking at the most popular route, (Kastrup Copenhagen - Seattle/Tacoma Intl), you can expect to pay $464 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 $402). Flying from Copenhagen to Seattle in July is currently the most expensive (average of $591). 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
Tacoma
Tukwila
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Cle Elum
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Federal Way
Fife
Issaquah
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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 November 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$432Average$583FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$462Average$556FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$463Average$554FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$479Average$717FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$533Average$658FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$600Average$808FlexibilityNo cancel feeOn-time77%

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