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Cheap flights from Copenhagen to Seattle from £271

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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 Wednesday or Tuesday 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 17 September 2025.

Round-trip from

£379

One-way from

£271

Popular in

July

Cheapest in

February

Average price

£439
Icelandair
  • Icelandair
  • 7/10-12/10
  • 2 total stops
  • 25h 05m total
  • Copenhagen to Seattle
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Finnair
  • Finnair
  • 5/11
  • 2 total stops
  • 19h 20m total
  • Copenhagen to Seattle
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£79 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£13 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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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 17 September 2025.

Thu 2/1014:00CPH - SEA
1 stop12h 50mIcelandair
Mon 13/1019:00SEA - CPH
1 stop11h 45mIcelandair
Deal found 15/9£379
Mon 6/1022:35CPH - SEA
1 stop31h 05mIcelandair
Sun 12/1015:45SEA - CPH
1 stop12h 10mIcelandair
Deal found 15/9£380
Thu 25/916:45CPH - SEA
1 stop12h 55mIcelandair
Fri 3/1015:45SEA - CPH
1 stop12h 10mIcelandair
Deal found 15/9£383
Wed 24/922:35CPH - SEA
1 stop28h 15mIcelandair
Fri 3/1015:45SEA - CPH
1 stop12h 10mIcelandair
Deal found 15/9£385
Wed 1/1016:45CPH - SEA
1 stop12h 55mIcelandair
Tue 14/1015:45SEA - CPH
1 stop12h 10mIcelandair
Deal found 15/9£401
Thu 2/1014:00CPH - SEA
1 stop12h 50mIcelandair
Thu 16/1019:00SEA - CPH
1 stop32h 55mIcelandair
Deal found 15/9£403
Mon 6/1022:35CPH - SEA
1 stop31h 05mIcelandair
Thu 16/1019:00SEA - CPH
1 stop32h 55mIcelandair
Deal found 15/9£403
Thu 23/1020:50CPH - SEA
1 stop23h 45mBritish Airways
Mon 27/1014:52SEA - CPH
2 stops17h 18mBritish Airways
Deal found 15/9£408
Fri 31/1010:35CPH - SEA
1 stop15h 20mBritish Airways
Fri 7/1110:35SEA - CPH
2 stops18h 10mBritish Airways
Deal found 16/9£411
Thu 23/1017:00CPH - SEA
2 stops27h 35mMultiple Airlines
Mon 27/1019:50SEA - CPH
1 stop15h 15mMultiple Airlines
Deal found 15/9£412
Sun 5/1007:00CPH - SEA
2 stops21h 09mBritish Airways
Mon 13/1020:20SEA - CPH
1 stop28h 10mBritish Airways
Deal found 15/9£415

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 17 September 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 2/10

14:00-17:50

1 stop12h 50m

Seattle/Tacoma Intl

Mon 13/10

19:00-15:45

1 stop11h 45m

£379

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 1/10

16:45-20:40

1 stop12h 55m

Seattle/Tacoma Intl

Mon 13/10

19:00-15:45

1 stop11h 45m

£401

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 1/10

16:45-20:40

1 stop12h 55m

Seattle/Tacoma Intl

Sun 12/10

19:00-21:45

1 stop17h 45m

£401

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 7/10

14:00-20:40

1 stop15h 40m

Seattle/Tacoma Intl

Thu 16/10

19:00-12:55

1 stop32h 55m

£403

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 6/10

22:35-20:40

1 stop31h 05m

Seattle/Tacoma Intl

Thu 16/10

19:00-12:55

1 stop32h 55m

£403

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 23/10

20:50-11:35

1 stop23h 45m

Seattle/Tacoma Intl

Mon 27/10

14:52-16:10

2 stops17h 18m

£408

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 31/10

10:35-17:55

1 stop15h 20m

Seattle/Tacoma Intl

Fri 7/11

10:35-13:45

2 stops18h 10m

£411

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 23/10

17:00-11:35

2 stops27h 35m

Seattle/Tacoma Intl

Mon 27/10

19:50-19:05

1 stop15h 15m

£414

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 5/10

07:00-21:13

2 stops23h 13m

Seattle/Tacoma Intl

Sun 12/10

14:52-22:50

2 stops22h 58m

£415

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 5/10

07:00-23:05

2 stops25h 05m

Seattle/Tacoma Intl

Tue 14/10

20:20-23:20

1 stop18h 00m

£415

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 22 results
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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 return 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 return flight from Copenhagen to Seattle. Price data was last updated on 12 September 2025.

The price you pay for your flight from Copenhagen to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 49 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 Copenhagen to Seattle?

Currently, January is the cheapest month in which you can book a flight from Copenhagen to Seattle (average of £622). Flying from Copenhagen to Seattle in July is currently the most expensive (average of £946). 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 17 September 2025.

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 for a return flight from Copenhagen to Seattle?

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 popular is this Copenhagen to Seattle flight route?

    The Kastrup Copenhagen to Seattle/Tacoma Intl flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Copenhagen to Seattle?

    For as low as £379, Icelandair can have you in Seattle from Copenhagen in 12h 50m. Airlines will cover a distance of 4850 mi. This flight may include one or multiple stops.

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

    The top 3 most reliable airlines when flying from Copenhagen to Seattle are Scandinavian Airlines (74%), Delta (74%) and Air France (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 holiday 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 £622). Flying from Copenhagen to Seattle in July is currently the most expensive (average of £946). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell
SeaTac

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