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$165+ Cheap flights from Seattle (SEA) to Copenhagen (CPH)

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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPH
Aug 17 — Aug 241
Mon 8/17
Mon 8/24
1 adult, Economy
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Find cheap flights from Seattle to Copenhagen with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Kastrup Copenhagen are usually found in February or April, booked 52 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from Seattle to Copenhagen

Cheapest flights from Seattle to Copenhagen
Explore the most affordable flight options available from Seattle to Copenhagen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2026.

This Air Canada deal was found by Cheapflights users on 7/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:45 am
SEA
-
CPH
1 stop17h 20m
Multiple Airlines
Thu 11/266:00 am
CPH
-
SEA
2 stops21h 22m
Multiple Airlines
Deal found 7/16$497
This CheapOair deal was found by Cheapflights users on 7/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:05 pm
SEA
-
CPH
2 stops54h 00m
Air Canada
Thu 11/268:55 am
CPH
-
SEA
2 stops18h 27m
Air Canada
Deal found 7/17$498
This FlightHub deal was found by Cheapflights users on 7/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:15 pm
SEA
-
CPH
2 stops33h 50m
Air Canada
Wed 4/1412:40 pm
CPH
-
SEA
2 stops18h 30m
Air Canada
Deal found 7/18$499
This KAYAK deal was found by Cheapflights users on 7/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:35 pm
SEA
-
CPH
1 stop20h 10m
Icelandair
Mon 11/305:05 pm
CPH
-
SEA
1 stop32h 55m
Icelandair
Deal found 7/17$500
This Ticket deal was found by Cheapflights users on 7/15. 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.
Sun 9/63:55 pm
SEA
-
CPH
Nonstop9h 15m
Scandinavian Airlines
Sat 9/191:05 pm
CPH
-
SEA
Nonstop9h 40m
Scandinavian Airlines
Deal found 7/15$502
This FlightHub deal was found by Cheapflights users on 7/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/165:50 am
SEA
-
CPH
2 stops19h 45m
Multiple Airlines
Mon 8/249:40 am
CPH
-
SEA
2 stops20h 03m
Multiple Airlines
Deal found 7/15$503
This Sembo deal was found by Cheapflights users on 7/17. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:25 pm
SEA
-
CPH
1 stop13h 20m
Icelandair
Mon 9/72:00 pm
CPH
-
SEA
1 stop30h 45m
Icelandair
Deal found 7/17$504
This oojo deal was found by Cheapflights users on 7/15. 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.
Sat 8/2211:25 pm
SEA
-
CPH
1 stop21h 55m
Icelandair
Fri 8/282:00 pm
CPH
-
SEA
1 stop12h 55m
Icelandair
Deal found 7/15$505
This oojo deal was found by Cheapflights users on 7/15. 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.
Sun 8/167:00 pm
SEA
-
CPH
1 stop26h 20m
Icelandair
Mon 8/2410:35 pm
CPH
-
SEA
1 stop22h 10m
Icelandair
Deal found 7/15$506
This Delta deal was found by Cheapflights users on 7/16. 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.
Sun 8/306:05 am
SEA
-
CPH
1 stop20h 40m
Delta
Thu 9/179:00 am
CPH
-
SEA
1 stop23h 20m
Delta
Deal found 7/16$507
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/133:55 pm
SEA
-
CPH
Nonstop9h 15m
Scandinavian Airlines
Sat 9/261:05 pm
CPH
-
SEA
Nonstop9h 40m
Scandinavian Airlines
Deal found 7/16$508
This Super.com deal was found by Cheapflights users on 7/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 pm
SEA
-
CPH
1 stop32h 55m
Icelandair
Fri 8/214:55 pm
CPH
-
SEA
1 stop12h 45m
Icelandair
Deal found 7/15$509

Find flight deals from Seattle to Copenhagen

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Copenhagen (CPH). 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 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$497
(FlightHub)

One-way from

$165
(oojo)

Popular in

December

Cheapest in

February

Average price

$810

Good round-trip deal

$716 or less

Good one-way deal

$539 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Kastrup Copenhagen flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Kastrup Copenhagen flights.
Search Deals
From Seattle/Tacoma Intl to Kastrup Copenhagen
Search Deals
One-way flight from Seattle/Tacoma Intl to Kastrup Copenhagen
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 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 Seattle/Tacoma Intl to Kastrup Copenhagen.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Kastrup Copenhagen.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Copenhagen 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 18, 2026.
Use the filters below to find and compare flights from Seattle to Copenhagen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 11/4

11:16 pm-10:05 am

2 stops25h 49m

Kastrup Copenhagen

Wed 4/14

8:40 am-4:59 pm

1 stop17h 19m

$503

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 10/11

10:57 pm-6:45 am

1 stop22h 48m

Kastrup Copenhagen

Sat 10/17

8:10 am-6:52 pm

2 stops19h 42m

$548

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 10/5

6:45 pm-5:05 pm

1 stop13h 20m

Kastrup Copenhagen

Mon 10/12

11:50 am-10:49 pm

2 stops19h 59m

$575

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 10/11

7:15 am-6:45 am

1 stop14h 30m

Kastrup Copenhagen

Sat 10/24

9:25 am-8:30 pm

2 stops20h 05m

$592

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 9/16

7:15 am-8:30 am

2 stops16h 15m

Kastrup Copenhagen

Tue 9/22

9:00 am-11:20 pm

1 stop23h 20m

$610

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 8/30

6:05 am-11:45 am

1 stop20h 40m

Kastrup Copenhagen

Sat 9/12

9:00 am-11:20 pm

1 stop23h 20m

$612
Quickest round-trip

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 10/9

3:55 pm-10:10 am

Nonstop9h 15m

Kastrup Copenhagen

Wed 10/21

12:45 pm-8:04 pm

1 stop16h 19m

$628

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 11/6

7:15 am-11:10 am

2 stops18h 55m

Kastrup Copenhagen

Sat 4/17

6:05 am-4:53 pm

2 stops19h 48m

$630

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 9/11

6:00 am-11:45 am

1 stop20h 45m

Kastrup Copenhagen

Fri 9/25

9:00 am-8:21 pm

1 stop20h 21m

$635

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 8/15

8:40 am-6:15 pm

2 stops24h 35m

Kastrup Copenhagen

Sun 8/23

12:40 pm-11:26 pm

3 stops43h 46m

$797

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Seattle to Copenhagen

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 Seattle to Copenhagen in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
CheapOairPrice 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 Seattle-Copenhagen flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Copenhagen flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Copenhagen flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Copenhagen 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 Seattle-Copenhagen 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 Seattle to Copenhagen

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

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

The price you pay for your flight from Seattle to Copenhagen may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Seattle to Copenhagen (average of $447). Flying from Seattle to Copenhagen in December is currently the most expensive (average of $835). 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 SEA to CPH?

Find hourly flight availability from Seattle to Copenhagen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 18, 2026.

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

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

The best insider tips for Seattle to Copenhagen 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 Seattle to Copenhagen 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 Copenhagen

Get insights into the airlines that provide service to Copenhagen. 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 Copenhagen. Reviews last updated July 18, 2026.
Read through reviews of airlines operating flights from Seattle to Copenhagen, such as Delta,Scandinavian Airlines, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,476 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,476 reviews
Delta
7.8
Good
8,476 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Scandinavian Airlines
7.4
Good
1,885 reviews
Delta
7.8
Good
8,476 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
10,006 reviews
Delta
7.8
Good
8,476 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Icelandair
7.0
Good
710 reviews
Delta
7.8
Good
8,476 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Lufthansa
6.8
Okay
8,143 reviews
Delta
7.8
Good
8,476 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Comfort

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Seattle to Copenhagen. 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 Seattle to Copenhagen?

    If you book a flight from Seattle to Copenhagen, you will be flying from Seattle/Tacoma Intl to Kastrup Copenhagen. Flights to Kastrup Copenhagen (CPH) from Seattle/Tacoma Intl (SEA) take 9h 15m for a nonstop flight. There is 1 flight from Seattle/Tacoma Intl to Copenhagen per day from 10 airlines.

  • How popular is this Seattle to Copenhagen flight route?

    Within the past month, 14 users have taken a look at flights from Seattle/Tacoma Intl to Kastrup Copenhagen.

  • How long is the flight from Seattle to Copenhagen?

    There are many flights that can get you from Seattle to Copenhagen in 22h 48m. Fly via United Airlines or Delta to get the fastest option. The distance between Seattle and Copenhagen is about 4850 mi. This flight may include one or multiple stops.

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

    SWISS, at $371, was found to be the cheapest airline from Seattle to Copenhagen.Alternate airlines to your destination round-trip include Icelandair and Air France. SWISS is 40% cheaper than the average price of flights available within the next 90 days to this destination.

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

    One-way options have recently been found by users for as low as $185 on Icelandair. Other airlines that offer cheap prices include Air France from $218 and Delta from $248 one-way.

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

    Before booking your flight to Copenhagen from Seattle, check out the most reliable airlines to get you to your destination on time: Air France (73%), Scandinavian Airlines (73%), Delta( 73%).

  • What are the cheapest flights from Seattle to Copenhagen?

    On average you can expect to pay $1,691 for a flight from Seattle to Copenhagen. The cheapest flight overall is $218 while the most popular route, (Seattle/Tacoma Intl - Kastrup Copenhagen) is currently priced at $384.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Seattle to Copenhagen (average of $447). Flying from Seattle to Copenhagen in December is currently the most expensive (average of $835). 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

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 Seattle to Copenhagen

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

Top 10 airlines flying from Seattle to Copenhagen

Discover the top 10 airlines that operate flights from Seattle to Copenhagen. 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 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$371Average$476FlexibilityNo cancel feeOn-time79%
IcelandairCheapest$420Average$567FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$469Average$663FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$482Average$623FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$482Average$571FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$501Average$799FlexibilityNo cancel feeOn-time77%
DeltaCheapest$506Average$670FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$506Average$772FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$509Average$700FlexibilityNo cancel feeOn-time76%
KLMCheapest$528Average$664FlexibilityNo cancel feeOn-time75%

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