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Cheap flights from Copenhagen to Seattle from £255

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 13/5. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
20 12月 — 27 12月1
1 adult
1 adult, Economy, 0 bags

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 20 11月 2025.

Round-trip from

£402

One-way from

£255

Popular in

July

Cheapest in

February

Average price

£412
British Airways
  • British Airways
  • 11/1-24/1
  • 3 total stops
  • 39h 49m total
  • Copenhagen to Seattle
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23/3
  • 23/3
  • 1 total stop
  • 25h 55m total
  • Copenhagen to Seattle
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£82 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Copenhagen to Seattle

Enter your travel dates to find the best prices.

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 20 11月 2025.

週三 24/1206:00CPH - SEA
1 stop16h 20mLufthansa
週四 8/114:00SEA - CPH
1 stop14h 45mLufthansa
Deal found 19/11£461
週二 23/1213:10CPH - SEA
1 stop33h 10mLufthansa
週三 7/115:10SEA - CPH
1 stop17h 25mLufthansa
Deal found 19/11£468
週三 24/1206:00CPH - SEA
1 stop16h 20mLufthansa
週三 7/115:10SEA - CPH
2 stops17h 55mLufthansa
Deal found 19/11£485
週五 12/1206:00CPH - SEA
2 stops18h 35mDelta
週三 31/1214:05SEA - CPH
1 stop17h 55mDelta
Deal found 18/11£541
週一 15/1212:30CPH - SEA
1 stop32h 40mLufthansa
週二 6/114:00SEA - CPH
1 stop13h 15mLufthansa
Deal found 19/11£543
週五 12/1206:55CPH - SEA
1 stop13h 35mBritish Airways
週三 31/1218:50SEA - CPH
1 stop18h 00mBritish Airways
Deal found 18/11£555
週六 13/1206:45CPH - SEA
2 stops19h 25mDelta
週三 31/1214:05SEA - CPH
1 stop17h 55mDelta
Deal found 18/11£560
週二 25/1106:00CPH - SEA
1 stop14h 45mDelta
週二 9/1211:25SEA - CPH
2 stops18h 15mDelta
Deal found 19/11£580
週五 12/1206:55CPH - SEA
1 stop13h 35mBritish Airways
週四 1/118:50SEA - CPH
1 stop13h 30mBritish Airways
Deal found 18/11£586
週三 19/1114:20CPH - SEA
2 stops41h 08mUnited Airlines
週日 23/1123:51SEA - CPH
2 stops27h 09mUnited Airlines
Deal found 19/11£604

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 20 11月 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

週二 20/1

06:50-21:15

2 stops23h 25m

Seattle/Tacoma Intl

週三 28/1

08:40-17:35

3 stops23h 55m

£456

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

週三 24/12

06:00-13:20

1 stop16h 20m

Seattle/Tacoma Intl

週四 8/1

14:00-13:45

1 stop14h 45m

£461

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

週日 11/1

08:05-14:49

1 stop15h 44m

Seattle/Tacoma Intl

週六 24/1

16:45-13:10

1 stop35h 25m

£465

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

週二 23/12

13:10-13:20

1 stop33h 10m

Seattle/Tacoma Intl

週三 7/1

15:10-17:35

1 stop17h 25m

£468

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

週日 11/1

10:05-11:32

2 stops58h 27m

Seattle/Tacoma Intl

週六 24/1

12:40-14:00

3 stops40h 20m

£468

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

週三 13/5

07:20-11:35

1 stop13h 15m

£255

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

週一 23/3

18:35-12:30

1 stop25h 55m

£255

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

週日 1/2

19:50-16:55

1 stop30h 05m

£259

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

週二 6/1

19:25-11:50

1 stop25h 25m

£637

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

週六 20/12

19:25-11:50

1 stop25h 25m

£767

Flights are sorted by cheapest return flights first.

Deals found on 18/11

Showing 1-10 of 15 results
1
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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 14 November 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 £307). Flying from Copenhagen to Seattle in July is currently the most expensive (average of £451). 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.

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 £465, United Airlines can have you in Seattle from Copenhagen in 15h 44m. Airlines will cover a distance of 4850 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £259. KLM flights start at £767 while deals on Delta start at £845 one-way.

  • 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 (53%), Delta (53%) 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 £307). Flying from Copenhagen to Seattle in July is currently the most expensive (average of £451). 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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By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Copenhagen.

Can Cheapflights find flights from Copenhagen to Seattle with no change fees?

Need flexible booking options for your flight to Seattle from Copenhagen? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Copenhagen to Seattle become cheaper?

Yes! Start tracking prices for Copenhagen to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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