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Cheap flights from Copenhagen to Seattle from £262

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
20 Jul — 27 Jul1
1 adult

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 15 July 2025.

Round-trip from

£423

One-way from

£262

Popular in

July

Cheapest in

February

Average price

£651
United Airlines
  • United Airlines
  • 4/9-29/9
  • 4 total stops
  • 43h 20m total
  • Copenhagen to Seattle
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Finnair
  • Finnair
  • 18/8
  • 1 total stop
  • 18h 15m 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).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£14 potential savings vs. average return price).
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Average for round-trip flights in July 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 15 July 2025.

Thu 4/906:10CPH - SEA
2 stops22h 21mUnited Airlines
Mon 29/906:01SEA - CPH
2 stops20h 59mUnited Airlines
Deal found 13/7£423
Fri 5/906:10CPH - SEA
1 stop14h 45mLufthansa
Sat 27/910:00SEA - CPH
2 stops36h 10mLufthansa
Deal found 13/7£428
Sun 7/907:20CPH - SEA
1 stop13h 05mIcelandair
Thu 2/1019:00SEA - CPH
1 stop11h 45mIcelandair
Deal found 13/7£433
Mon 1/914:45CPH - SEA
1 stop30h 00mDelta
Sun 28/920:25SEA - CPH
1 stop31h 45mDelta
Deal found 13/7£469
Sun 3/806:05CPH - SEA
1 stop14h 50mMultiple Airlines
Mon 25/816:25SEA - CPH
1 stop12h 50mMultiple Airlines
Deal found 14/7£513
Thu 24/715:05CPH - SEA
2 stops36h 31mSWISS
Thu 7/813:45SEA - CPH
2 stops15h 30mSWISS
Deal found 14/7£571
Fri 5/908:50CPH - SEA
2 stops23h 11mFinnair
Sat 27/910:08SEA - CPH
2 stops28h 02mFinnair
Deal found 13/7£599

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 15 July 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 4/9

06:10-19:31

2 stops22h 21m

Seattle/Tacoma Intl

Mon 29/9

06:01-12:00

2 stops20h 59m

£423

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 6/9

06:10-11:55

1 stop14h 45m

Seattle/Tacoma Intl

Tue 30/9

14:20-18:25

1 stop19h 05m

£432

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 7/9

07:20-11:25

1 stop13h 05m

Seattle/Tacoma Intl

Thu 2/10

19:00-15:45

1 stop11h 45m

£433

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 1/9

14:45-11:45

1 stop30h 00m

Seattle/Tacoma Intl

Sun 28/9

20:25-13:10

1 stop31h 45m

£469

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 3/8

06:05-11:55

1 stop14h 50m

Seattle/Tacoma Intl

Mon 25/8

16:25-14:15

1 stop12h 50m

£513

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 5/9

13:15-23:01

2 stops18h 46m

Seattle/Tacoma Intl

Mon 29/9

07:25-18:40

2 stops26h 15m

£599

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 18/8

06:45-16:00

1 stop18h 15m

£262

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 8/10

13:05-14:00

Nonstop9h 55m

£628

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 7/8

07:20-17:50

1 stop19h 30m

£630

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 2/8

06:25-17:15

1 stop19h 50m

£669

Flights are sorted by cheapest return flights first.

Deals found on 15/7

Showing 1-10 of 15 results
1
2

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 11 July 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 65 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 15 July 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?

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 15 July 2025.
Read through reviews of airlines operating flights from Copenhagen to Seattle, such as Delta, Finnair, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,956 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,956 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Turkish Airlines
7.3
Good
3,901 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Scandinavian Airlines
7.3
Good
1,423 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

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

    Our cheapest airline available from Copenhagen to Seattle is United Airlines. Our recent data shows that you can find tickets from as low as £423 on this airline. Additional options worth looking into are Lufthansa and Icelandair, starting at £428 and £433 round-trip. United Airlines is 6% cheaper than the average price of flights available within the next 90 days to this destination.

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

    To fly one-way, consider booking your trip with Finnair, which is currently one of the cheapest options available, starting at £262. Delta flights start at £628 while deals on Icelandair start at £630 one-way.

  • 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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