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$261+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPH
feb. 25 — mar. 41
mié. 2/25
mié. 3/4
1 adult, Economy
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Find cheap flights from Seattle to Copenhagen 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”

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Kastrup Copenhagen are usually found in October or February, booked 78 days in advance, depart on a Tuesday or Monday and return on a Thursday

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 enero 26, 2026.

This oojo deal was found by Cheapflights users on 1/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/233:40 pm
SEA
-
CPH
1 stop21h 05m
Icelandair
mar. 4/284:55 pm
CPH
-
SEA
1 stop12h 45m
Icelandair
Deal found 1/23$421
This lastminute.com deal was found by Cheapflights users on 1/25. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/162:35 pm
SEA
-
CPH
1 stop29h 45m
Icelandair
lun. 3/212:55 pm
CPH
-
SEA
1 stop13h 05m
Icelandair
Deal found 1/25$422
This oojo deal was found by Cheapflights users on 1/24. 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.
mar. 4/283:40 pm
SEA
-
CPH
1 stop12h 15m
Icelandair
sáb. 5/92:00 pm
CPH
-
SEA
1 stop15h 40m
Icelandair
Deal found 1/24$429
This oojo deal was found by Cheapflights users on 1/25. 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.
mar. 9/227:00 pm
SEA
-
CPH
1 stop17h 45m
Icelandair
vie. 10/92:00 pm
CPH
-
SEA
1 stop12h 55m
Icelandair
Deal found 1/25$430
This oojo deal was found by Cheapflights users on 1/24. 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.
vie. 5/17:00 pm
SEA
-
CPH
1 stop19h 45m
Icelandair
mié. 5/67:20 am
CPH
-
SEA
1 stop19h 35m
Icelandair
Deal found 1/24$437
This oojo deal was found by Cheapflights users on 1/24. 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.
mié. 2/252:35 pm
SEA
-
CPH
1 stop20h 15m
Icelandair
mié. 3/412:55 pm
CPH
-
SEA
1 stop13h 05m
Icelandair
Deal found 1/24$444
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
lun. 4/67:00 pm
SEA
-
CPH
1 stop17h 45m
Icelandair
vie. 4/104:55 pm
CPH
-
SEA
1 stop12h 45m
Icelandair
Deal found 1/25$447
This Icelandair deal was found by Cheapflights users on 1/25. 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.
lun. 2/92:35 pm
SEA
-
CPH
1 stop12h 10m
Icelandair
vie. 2/1312:55 pm
CPH
-
SEA
1 stop13h 05m
Icelandair
Deal found 1/25$448
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
mar. 4/77:00 pm
SEA
-
CPH
1 stop17h 45m
Icelandair
dom. 4/1210:35 pm
CPH
-
SEA
1 stop28h 20m
Icelandair
Deal found 1/25$449
This Kiwi.com deal was found by Cheapflights users on 1/24. 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.
lun. 4/63:40 pm
SEA
-
CPH
1 stop21h 05m
Icelandair
dom. 4/1210:35 pm
CPH
-
SEA
1 stop31h 05m
Icelandair
Deal found 1/24$452
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
mar. 4/77:00 pm
SEA
-
CPH
1 stop11h 55m
Icelandair
lun. 4/134:55 pm
CPH
-
SEA
1 stop12h 45m
Icelandair
Deal found 1/25$456

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 enero 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$421
(oojo)

One-way from

$261
(Trip.com)

Popular in

June

Cheapest in

October

Average price

$535

Good round-trip deal

$537 or less

Good one-way deal

$506 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. 12% potential increase in price ($85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 enero 26, 2026.
Use the filters below to find and compare flights from Seattle to Copenhagen that are best for you.

Fly from

Seattle

Fly to

Copenhagen

Route

Depart

Return

Price

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

lun. 2/9

2:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

vie. 2/13

12:55 pm-5:00 pm

1 stop13h 05m

$448

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

jue. 3/5

12:36 pm-2:05 pm

2 stops40h 29m

Kastrup Copenhagen

sáb. 3/14

6:50 am-1:10 pm

1 stop14h 20m

$504

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

jue. 4/16

8:00 am-10:50 am

1 stop17h 50m

Kastrup Copenhagen

mié. 4/22

12:45 pm-4:37 pm

2 stops36h 52m

$511

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

jue. 4/2

8:00 am-10:50 am

1 stop17h 50m

Kastrup Copenhagen

mié. 4/8

12:45 pm-6:00 pm

2 stops38h 15m

$511

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

dom. 3/1

8:17 am-12:25 pm

2 stops19h 08m

Kastrup Copenhagen

jue. 5/28

12:45 pm-4:27 pm

2 stops36h 42m

$514

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

mié. 4/1

11:59 pm-10:50 am

2 stops25h 51m

Kastrup Copenhagen

mar. 4/14

12:45 pm-4:37 pm

2 stops36h 52m

$515

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

sáb. 2/7

5:10 pm-12:25 pm

2 stops34h 15m

Kastrup Copenhagen

mar. 2/10

10:10 am-11:15 pm

2 stops22h 05m

$516

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

mié. 4/1

6:50 pm-6:40 pm

1 stop14h 50m

Kastrup Copenhagen

vie. 4/10

12:45 pm-9:51 pm

1 stop18h 06m

$523

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

mié. 4/1

8:00 pm-10:50 am

2 stops29h 50m

Kastrup Copenhagen

mié. 4/8

12:45 pm-9:51 pm

1 stop18h 06m

$524

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

jue. 4/2

8:00 am-10:50 am

1 stop17h 50m

Kastrup Copenhagen

mar. 4/7

12:45 pm-9:51 pm

1 stop18h 06m

$524

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 21 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Copenhagen. Price data was last updated on January 23, 2026.

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 78 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, November is the cheapest month in which you can book a flight from Seattle to Copenhagen (average of $230). Flying from Seattle to Copenhagen in June is currently the most expensive (average of $542). 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.

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 enero 26, 2026.
Read through reviews of airlines operating flights from Seattle to Copenhagen, such as Delta, United Airlines, and Scandinavian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,113 reviews

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,113 reviews
Delta
7.9
Good
8,113 reviews

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,199 reviews
Delta
7.9
Good
8,113 reviews

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Scandinavian Airlines
7.3
Good
1,669 reviews
Delta
7.9
Good
8,113 reviews

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Icelandair
7.1
Good
603 reviews
Delta
7.9
Good
8,113 reviews

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,701 reviews
Delta
7.9
Good
8,113 reviews

Comfort

7.9

Food

7.2

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • How popular is this Seattle to Copenhagen flight route?

    Within the past month, 7 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 12h 10m. Fly via Icelandair or United Airlines 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?

    Finnair, at $385, was found to be the cheapest airline from Seattle to Copenhagen.Alternate airlines to your destination round-trip include Air France and Icelandair. Finnair is 37% 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 $194 on Icelandair. Other airlines that offer cheap prices include Lufthansa from $335 and Delta from $350 one-way.

  • What are the cheapest flights from Seattle to Copenhagen?

    On average you can expect to pay $1,523 for a flight from Seattle to Copenhagen. The cheapest flight overall is $388 while the most popular route, (Seattle/Tacoma Intl - Kastrup Copenhagen) is currently priced at $421.

  • Where are the most common layover locations when flying from Seattle to Copenhagen?

    The most popular layover on flights from Seattle to Copenhagen is Reykjavik.

  • What are some popular things to do or see while on a layover in Reykjavik?

    If you're on a layover in Reykjavik and looking for things to do, consider visiting Hallgrímskirkja, Harpa, or Laugardalslaug Geothermal Pool. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are located about 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Those landing in Reykjavik looking to spend some time exploring during their layover can rent a car for about $52 per day.

  • Where are the least popular layover locations for Seattle to Copenhagen flights?

    Seattle to Copenhagen flights have a layover in London the least frequently.

  • 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, November is the cheapest month in which you can book a flight from Seattle to Copenhagen (average of $230). Flying from Seattle to Copenhagen in June is currently the most expensive (average of $542). 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 Copenhagen?

Book flights to Copenhagen if you plan to visit one of these locations
Kastrup

Browse thousands of different options on Cheapflights for your next trip

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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 enero 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest$385Average$665FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$418Average$618FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$422Average$573FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$497Average$723FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$506Average$681FlexibilityNo cancel feeOn-time70%
DeltaCheapest$531Average$728FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$535Average$709FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$535Average$713FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$536Average$683FlexibilityNo cancel feeOn-time67%
KLMCheapest$540Average$717FlexibilityNo cancel feeOn-time75%

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