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$342+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 November, booked 49 days in advance, depart on a Thursday or Monday and return on a Tuesday

Cheap 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 December 18, 2025.

This KLM deal was found by Cheapflights users on 12/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:25 pmCPH - SEA
1 stop25h 25mMultiple Airlines
Thu 1/151:40 pmSEA - CPH
1 stop16h 00mMultiple Airlines
Deal found 12/16$804
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:15 pmCPH - SEA
1 stop30h 35mDelta
Wed 1/147:10 amSEA - CPH
2 stops19h 05mDelta
Deal found 12/16$811
This KLM deal was found by Cheapflights users on 12/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:25 pmCPH - SEA
1 stop25h 25mMultiple Airlines
Tue 1/131:40 pmSEA - CPH
1 stop18h 20mMultiple Airlines
Deal found 12/17$816
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:00 amCPH - SEA
2 stops23h 44mDelta
Thu 1/159:25 amSEA - CPH
2 stops20h 15mDelta
Deal found 12/16$834
This Delta deal was found by Cheapflights users on 12/17. 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 12/222:15 pmCPH - SEA
1 stop30h 35mDelta
Fri 1/167:40 amSEA - CPH
2 stops20h 30mDelta
Deal found 12/17$835
This Delta deal was found by Cheapflights users on 12/17. 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 12/222:15 pmCPH - SEA
1 stop30h 35mDelta
Tue 1/131:40 pmSEA - CPH
1 stop16h 00mDelta
Deal found 12/17$839
This Delta deal was found by Cheapflights users on 12/17. 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 12/222:15 pmCPH - SEA
1 stop30h 35mDelta
Sat 1/173:10 pmSEA - CPH
1 stop16h 25mDelta
Deal found 12/17$845
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:15 pmCPH - SEA
1 stop30h 35mDelta
Mon 1/127:10 amSEA - CPH
2 stops16h 50mDelta
Deal found 12/16$846

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$548
(Mytrip)

One-way from

$342
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$762
Provider with most accurate pricing for Kastrup Copenhagen-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kastrup Copenhagen-Seattle/Tacoma Intl flights.
Search Deals
From Kastrup Copenhagen to Seattle/Tacoma Intl
Search Deals
One-way flight from Kastrup Copenhagen to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($139 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 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

Mon 1/12

6:35 pm-11:30 am

1 stop25h 55m

Seattle/Tacoma Intl

Sun 1/25

10:50 am-2:20 pm

2 stops18h 30m

$567

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 1/22

12:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Mon 2/16

2:35 pm-11:45 am

1 stop12h 10m

$573

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 1/22

12:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 2/17

2:35 pm-11:45 am

1 stop12h 10m

$573

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 3/4

12:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sun 3/8

3:00 pm-7:50 pm

1 stop20h 50m

$573

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 1/25

8:40 am-7:18 pm

2 stops19h 38m

Seattle/Tacoma Intl

Mon 2/9

6:50 pm-7:05 pm

1 stop15h 15m

$574

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 3/4

12:15 pm-4:55 pm

1 stop13h 40m

Seattle/Tacoma Intl

Sun 3/8

1:37 pm-5:40 pm

2 stops20h 03m

$575

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 1/22

7:50 pm-11:30 am

1 stop24h 40m

Seattle/Tacoma Intl

Sun 2/15

6:50 pm-9:45 pm

1 stop17h 55m

$580

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 6/10

10:20 am-11:35 am

1 stop34h 15m

$355

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 5/3

9:20 pm-11:35 am

1 stop23h 15m

$355

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 5/3

12:25 pm-11:05 pm

2 stops19h 40m

$355

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 13 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 December.
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 December 12, 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, February 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 $600). 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 December 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

AI-powered summary based on content written by travel experts. AI can make mistakes.
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 December 18, 2025.
Read reviews from past customers who have flown Scandinavian Airlines, United Airlines, and American Airlines 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
1,607 reviews

Food

6.7

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.6

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
1,607 reviews
Scandinavian Airlines
7.4
Good
1,607 reviews

Food

6.7

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.6

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
9,092 reviews
Scandinavian Airlines
7.4
Good
1,607 reviews

Food

6.7

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.6

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.
American Airlines
7.2
Good
11,055 reviews
Scandinavian Airlines
7.4
Good
1,607 reviews

Food

6.7

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.6

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
591 reviews
Scandinavian Airlines
7.4
Good
1,607 reviews

Food

6.7

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.6

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
7,585 reviews
Scandinavian Airlines
7.4
Good
1,607 reviews

Food

6.7

Entertainment

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Boarding

7.6

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 12h 35m. Fly via Icelandair or British Airways 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, Lufthansa ($317), Icelandair ($430), and American Airlines ($462) offers the cheapest pricing from Copenhagen to Seattle. You may be able to fly from Copenhagen to Seattle for 50% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Copenhagen to Seattle one-way?

    For one-way options, check prices for British Airways. According to our data, you can fly for as low as $381. Users have also found prices from $399 and $425 on Finnair and Icelandair, respectively.

  • 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: Air France (50%), Scandinavian Airlines (50%), Delta (50%).

  • 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, February 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 $600). 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
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Cle Elum
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Fife
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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$317Average$717FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$430Average$587FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$462Average$556FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$470Average$495FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$567Average$682FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$600Average$808FlexibilityNo cancel feeOn-time77%

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