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$351+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 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 September 17, 2025.

Round-trip from

$490
(oojo)

One-way from

$351
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$599

Good round-trip deal

$972 or less

Good one-way deal

$776 or less
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. 19% potential increase in price ($147 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Kastrup Copenhagen to Seattle/Tacoma Intl.
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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 September 17, 2025.

This oojo deal was found by Cheapflights users on 9/15. 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.
Wed 10/152:00 pmCPH - SEA
1 stop12h 50mIcelandair
Wed 10/227:00 pmSEA - CPH
1 stop17h 45mIcelandair
Deal found 9/15$490
This oojo deal was found by Cheapflights users on 9/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/164:45 pmCPH - SEA
1 stop12h 55mIcelandair
Thu 10/237:00 pmSEA - CPH
1 stop17h 45mIcelandair
Deal found 9/16$491
This oojo deal was found by Cheapflights users on 9/15. 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 10/1810:35 pmCPH - SEA
1 stop31h 05mIcelandair
Wed 10/293:35 pmSEA - CPH
1 stop21h 00mIcelandair
Deal found 9/15$492
This oojo deal was found by Cheapflights users on 9/15. 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.
Tue 10/1410:35 pmCPH - SEA
1 stop28h 15mIcelandair
Fri 10/313:35 pmSEA - CPH
1 stop22h 55mIcelandair
Deal found 9/15$493
This ResecentrumGruppen deal was found by Cheapflights users on 9/17. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/211:05 pmCPH - SEA
1 stop12h 55mIcelandair
Thu 11/272:35 pmSEA - CPH
1 stop21h 00mIcelandair
Deal found 9/17$503
This Ticket deal was found by Cheapflights users on 9/15. 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.
Tue 9/2310:35 pmCPH - SEA
1 stop28h 15mIcelandair
Sat 10/47:00 pmSEA - CPH
1 stop17h 45mIcelandair
Deal found 9/15$511
This Gotogate deal was found by Cheapflights users on 9/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/14:45 pmCPH - SEA
1 stop12h 55mIcelandair
Sun 10/53:45 pmSEA - CPH
1 stop21h 00mIcelandair
Deal found 9/15$513
This Icelandair deal was found by Cheapflights users on 9/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/22:00 pmCPH - SEA
1 stop12h 50mIcelandair
Mon 10/137:00 pmSEA - CPH
1 stop11h 45mIcelandair
Deal found 9/15$517
This Icelandair deal was found by Cheapflights users on 9/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/610:35 pmCPH - SEA
1 stop31h 05mIcelandair
Tue 10/143:45 pmSEA - CPH
1 stop21h 00mIcelandair
Deal found 9/15$518
This Icelandair deal was found by Cheapflights users on 9/17. 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.
Sun 10/194:45 pmCPH - SEA
1 stop12h 55mIcelandair
Tue 11/112:35 pmSEA - CPH
1 stop12h 10mIcelandair
Deal found 9/17$519
This Icelandair deal was found by Cheapflights users on 9/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/254:45 pmCPH - SEA
1 stop12h 55mIcelandair
Fri 10/33:45 pmSEA - CPH
1 stop12h 10mIcelandair
Deal found 9/15$523
This Flysmarter deal was found by Cheapflights users on 9/17. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:45 pmCPH - SEA
2 stops28h 09mBritish Airways
Sat 11/85:48 amSEA - CPH
2 stops20h 57mBritish Airways
Deal found 9/17$524

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 September 17, 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 10/23

2:00 pm-5:50 pm

1 stop12h 50m

Seattle/Tacoma Intl

Mon 10/27

3:35 pm-11:45 am

1 stop12h 10m

$491

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 10/7

4:45 pm-8:40 pm

1 stop12h 55m

Seattle/Tacoma Intl

Mon 10/13

3:45 pm-12:55 pm

1 stop12h 10m

$517

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 10/1

4:45 pm-8:40 pm

1 stop12h 55m

Seattle/Tacoma Intl

Mon 10/13

7:00 pm-3:45 pm

1 stop11h 45m

$547

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 10/7

2:00 pm-8:40 pm

1 stop15h 40m

Seattle/Tacoma Intl

Thu 10/16

7:00 pm-12:55 pm

1 stop32h 55m

$549

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 10/23

8:50 pm-11:35 am

1 stop23h 45m

Seattle/Tacoma Intl

Mon 10/27

2:52 pm-4:10 pm

2 stops17h 18m

$557

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 10/31

10:35 am-5:55 pm

1 stop15h 20m

Seattle/Tacoma Intl

Fri 11/7

10:35 am-1:45 pm

2 stops18h 10m

$560

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 10/23

5:00 pm-11:35 am

2 stops27h 35m

Seattle/Tacoma Intl

Mon 10/27

7:50 pm-7:05 pm

1 stop15h 15m

$562

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 10/5

7:00 am-9:13 pm

2 stops23h 13m

Seattle/Tacoma Intl

Sun 10/12

2:52 pm-10:50 pm

2 stops22h 58m

$566

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 10/5

7:00 am-11:05 pm

2 stops25h 05m

Seattle/Tacoma Intl

Tue 10/14

8:20 pm-11:20 pm

1 stop18h 00m

$566

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 10/23

5:00 pm-11:35 am

2 stops27h 35m

Seattle/Tacoma Intl

Mon 10/27

7:50 pm-11:55 pm

2 stops20h 05m

$569

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 22 results
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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

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 September 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, January is the cheapest month in which you can book a flight from Copenhagen to Seattle (average of $238). Flying from Copenhagen to Seattle in June is currently the most expensive (average of $387). 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 September 17, 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?

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 September 17, 2025.
Read reviews from past customers who have flown Scandinavian Airlines, American 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
1,486 reviews

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

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
1,486 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

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.
American Airlines
7.2
Good
10,000 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

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
545 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

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
7,409 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

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
7,367 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews

Entertainment

6.6

Food

6.7

Comfort

7.3

Overall

7.4

Boarding

7.6

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 12h 50m. 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, Icelandair ($430), American Airlines ($456), and British Airways ($463) offers the cheapest pricing from Copenhagen to Seattle. You may be able to fly from Copenhagen to Seattle for 30% 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 $370. Users have also found prices from $427 and $452 on American Airlines and British Airways, 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: Scandinavian Airlines (74%), Delta (74%), Air France (50%).

  • What are the cheapest flights from Copenhagen to Seattle?

    While on average a flight from Copenhagen to Seattle is generally $972, our data shows the cheapest flight currently is $761. When looking at the most popular route, (Kastrup Copenhagen - Seattle/Tacoma Intl), you can expect to pay $469 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 $238). Flying from Copenhagen to Seattle in June is currently the most expensive (average of $387). 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
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Lacey
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

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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 7 airlines flying from Copenhagen to Seattle

Discover the top 7 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$430Average$588FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$456Average$556FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$463Average$576FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$483Average$717FlexibilityNo cancel feeOn-time76%
DeltaCheapest$498Average$632FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$516Average$658FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$600Average$805FlexibilityNo cancel feeOn-time77%

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