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$383+ 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
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 November or January, booked 49 days in advance, depart on a Tuesday or Wednesday and return on a Sunday

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 July 23, 2026.

This Finnair deal was found by Cheapflights users on 7/21. 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 9/46:45 am
CPH
-
SEA
1 stop18h 15m
Finnair
Sat 9/198:20 pm
SEA
-
CPH
2 stops17h 50m
Finnair
Deal found 7/21$698
This oojo deal was found by Cheapflights users on 7/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/154:55 pm
CPH
-
SEA
1 stop34h 00m
Icelandair
Thu 9/247:00 pm
SEA
-
CPH
1 stop17h 45m
Icelandair
Deal found 7/22$702
This Delta deal was found by Cheapflights users on 7/22. 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 8/241:55 pm
CPH
-
SEA
1 stop18h 59m
Delta
Fri 9/111:30 pm
SEA
-
CPH
1 stop18h 35m
Delta
Deal found 7/22$704
This Ticket deal was found by Cheapflights users on 7/22. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:05 pm
CPH
-
SEA
Nonstop9h 40m
Scandinavian Airlines
Sat 9/192:30 pm
SEA
-
CPH
1 stop15h 40m
Scandinavian Airlines
Deal found 7/22$712
This Flysmarter deal was found by Cheapflights users on 7/23. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:30 am
CPH
-
SEA
1 stop14h 25m
Lufthansa
Sat 9/197:00 am
SEA
-
CPH
2 stops17h 15m
Lufthansa
Deal found 7/23$719
This United Airlines deal was found by Cheapflights users on 7/20. 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 9/46:30 am
CPH
-
SEA
1 stop14h 25m
United Airlines
Sat 9/196:50 pm
SEA
-
CPH
1 stop19h 40m
United Airlines
Deal found 7/20$721
This Air Canada deal was found by Cheapflights users on 7/22. 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.
Mon 8/2410:30 am
CPH
-
SEA
2 stops17h 02m
Air Canada
Mon 9/75:50 am
SEA
-
CPH
2 stops20h 00m
Air Canada
Deal found 7/22$723

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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$698
(Finnair)

One-way from

$383
(Travelocity)

Popular in

July

Cheapest in

November

Average price

$978

Good round-trip deal

$1,408 or less

Good one-way deal

$841 or less
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. 19% potential increase in price ($166 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
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.
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 July 23, 2026.
Use the filters below to find and compare flights from Copenhagen to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 9/4

6:30 am-11:55 am

1 stop14h 25m

Seattle/Tacoma Intl

Sat 9/19

6:50 pm-11:30 pm

1 stop19h 40m

$721

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 9/4

12:25 pm-11:59 pm

2 stops20h 34m

Seattle/Tacoma Intl

Sat 9/19

8:20 pm-11:10 pm

2 stops17h 50m

$811

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 8/6

10:50 am-8:58 pm

2 stops43h 08m

Seattle/Tacoma Intl

Mon 8/10

1:30 pm-7:55 pm

1 stop21h 25m

$841

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 9/4

9:25 pm-8:40 pm

3 stops32h 15m

Seattle/Tacoma Intl

Sat 9/19

3:40 pm-11:35 pm

2 stops22h 55m

$882

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 8/6

11:30 am-4:27 pm

1 stop13h 57m

Seattle/Tacoma Intl

Mon 8/10

1:30 pm-11:25 am

1 stop12h 55m

$895

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/21

6:30 am-2:22 pm

2 stops16h 52m

Seattle/Tacoma Intl

Fri 8/21

5:13 pm-8:55 am

2 stops54h 42m

$1,028

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 8/9

1:05 pm-1:45 pm

Nonstop9h 40m

Seattle/Tacoma Intl

Sun 8/16

9:45 pm-9:35 pm

1 stop14h 50m

$1,160
Quickest round-trip

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 9/4

1:05 pm-1:45 pm

Nonstop9h 40m

Seattle/Tacoma Intl

Sat 9/19

3:55 pm-10:10 am

Nonstop9h 15m

$1,237
Cheapest one-way

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 9/15

5:40 pm-11:35 am

1 stop26h 55m

$401

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 8/22

10:35 pm-11:45 am

1 stop22h 10m

$665

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 19 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Copenhagen-Seattle flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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?

Booking 48 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, November is the cheapest month in which you can book a flight from Copenhagen to Seattle (average of $542). Flying from Copenhagen to Seattle in July is currently the most expensive (average of $978). 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 July 23, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Copenhagen to Seattle as you normally would.

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

Airfare is below average for this route at the moment.

Copenhagen to Seattle flights typically cost between $722 and $980 in September.
The cheapest round-trip price found within the last 5 days was $698 on Finnair (Sep 4-Sep 19).

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
Our travel experts
John Walton

John Walton

Expert on CPH

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 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 July 23, 2026.
Read reviews from past customers who have flown Delta,Scandinavian Airlines, andUnited 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.
Delta
7.8
Good
8,484 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Overall

7.8

Crew

8.5

Food

7.2

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Delta
7.8
Good
8,484 reviews
Delta
7.8
Good
8,484 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Overall

7.8

Crew

8.5

Food

7.2

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Scandinavian Airlines
7.4
Good
1,899 reviews
Delta
7.8
Good
8,484 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Overall

7.8

Crew

8.5

Food

7.2

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
United Airlines
7.4
Good
10,024 reviews
Delta
7.8
Good
8,484 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Overall

7.8

Crew

8.5

Food

7.2

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Icelandair
7.0
Good
717 reviews
Delta
7.8
Good
8,484 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Overall

7.8

Crew

8.5

Food

7.2

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

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 40m for a nonstop flight. There is 1 flight from Kastrup Copenhagen to Seattle per day from 4 airlines.

  • How long is the flight from Copenhagen to Seattle?

    There are many flights that can get you from Copenhagen to Seattle in 18h 15m. Fly via Finnair, Icelandair, or Delta 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 ($469), Delta ($545), and United Airlines ($592) offers the cheapest pricing from Copenhagen to Seattle. You may be able to fly from Copenhagen to Seattle for 33% 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 Finnair. According to our data, you can fly for as low as $251. Users have also found prices from $342 and $349 on British Airways and American Airlines, 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 (75%), Scandinavian Airlines (75%), Delta (75%).

  • What are the cheapest flights from Copenhagen to Seattle?

    While on average a flight from Copenhagen to Seattle is generally $1,156, our data shows the cheapest flight currently is $795. When looking at the most popular route, (Kastrup Copenhagen - Seattle/Tacoma Intl), you can expect to pay $491 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, November is the cheapest month in which you can book a flight from Copenhagen to Seattle (average of $542). Flying from Copenhagen to Seattle in July is currently the most expensive (average of $978). 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
Renton
Lacey
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Centralia
Puyallup
Kent
Ellensburg
Fife
Marysville
Ocean Shores
Lakewood
Lynnwood
Issaquah

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 Copenhagen to Seattle

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

Top 4 airlines flying from Copenhagen to Seattle

Discover the top 4 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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$469Average$602FlexibilityNo cancel feeOn-time76%
DeltaCheapest$545Average$933FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$592Average$721FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$600Average$1,081FlexibilityNo cancel feeOn-time77%

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