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Cheap flights from Copenhagen to Seattle from £389

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
6 Dec — 13 Dec1
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 6 November 2025.

Round-trip from

£390

Popular in

July

Cheapest in

February

Average price

£399
Icelandair
  • Icelandair
  • 29/4-3/5
  • 2 total stops
  • 28h 00m total
  • Copenhagen to Seattle
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£84 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 6 November 2025.

Thu 20/1109:55CPH - SEA
2 stops19h 55mDelta
Wed 3/1214:05SEA - CPH
1 stop15h 35mDelta
Deal found 5/11£420
Thu 4/1208:40CPH - SEA
2 stops19h 32mMultiple Airlines
Wed 7/118:50SEA - CPH
1 stop15h 10mMultiple Airlines
Deal found 4/11£449
Mon 15/1206:55CPH - SEA
1 stop14h 15mLufthansa
Wed 31/1215:10SEA - CPH
1 stop22h 55mLufthansa
Deal found 5/11£450
Mon 15/1206:55CPH - SEA
3 stops23h 05mUnited Airlines
Wed 31/1206:00SEA - CPH
2 stops22h 35mUnited Airlines
Deal found 5/11£453
Wed 10/1210:05CPH - SEA
3 stops22h 10mUnited Airlines
Wed 7/114:10SEA - CPH
2 stops18h 25mUnited Airlines
Deal found 4/11£454
Wed 24/1213:05CPH - SEA
2 stops20h 54mUnited Airlines
Tue 30/1214:00SEA - CPH
1 stop13h 15mUnited Airlines
Deal found 3/11£456
Wed 24/1213:05CPH - SEA
2 stops20h 54mUnited Airlines
Wed 31/1207:05SEA - CPH
2 stops21h 30mUnited Airlines
Deal found 3/11£456
Wed 17/1206:00CPH - SEA
2 stops27h 50mUnited Airlines
Mon 29/1223:15SEA - CPH
2 stops28h 00mUnited Airlines
Deal found 5/11£464
Tue 16/1206:45CPH - SEA
2 stops19h 05mDelta
Wed 24/1205:25SEA - CPH
2 stops29h 25mDelta
Deal found 3/11£466
Wed 17/1206:00CPH - SEA
1 stop14h 50mDelta
Mon 29/1215:05SEA - CPH
1 stop18h 15mDelta
Deal found 5/11£477

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 6 November 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

Wed 29/4

17:15-20:45

1 stop12h 30m

Seattle/Tacoma Intl

Sun 3/5

19:00-21:45

1 stop17h 45m

£389

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 20/11

09:55-20:50

2 stops19h 55m

Seattle/Tacoma Intl

Wed 3/12

14:05-14:40

1 stop15h 35m

£420

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 13/1

06:45-07:36

2 stops33h 51m

Seattle/Tacoma Intl

Wed 21/1

16:45-19:50

1 stop18h 05m

£437

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 4/12

08:40-19:12

2 stops19h 32m

Seattle/Tacoma Intl

Wed 7/1

18:50-19:00

1 stop15h 10m

£449

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 10/12

08:40-18:55

2 stops19h 15m

Seattle/Tacoma Intl

Wed 7/1

18:50-21:50

1 stop18h 00m

£449

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 15/12

06:55-12:10

1 stop14h 15m

Seattle/Tacoma Intl

Wed 31/12

15:10-23:05

1 stop22h 55m

£450

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 11/1

08:05-14:53

1 stop15h 48m

Seattle/Tacoma Intl

Sat 17/1

09:25-14:40

2 stops20h 15m

£453

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 10/12

10:05-23:15

3 stops22h 10m

Seattle/Tacoma Intl

Wed 7/1

14:10-17:35

2 stops18h 25m

£454

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 11/1

06:50-22:43

3 stops48h 53m

Seattle/Tacoma Intl

Sat 17/1

10:58-17:35

2 stops21h 37m

£455

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 17/12

12:55-17:00

1 stop13h 05m

£505

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 19 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 31 October 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 £308). Flying from Copenhagen to Seattle in July is currently the most expensive (average of £454). 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.

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 £389, Icelandair can have you in Seattle from Copenhagen in 12h 30m. 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 (64%), Delta (64%) 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 £308). Flying from Copenhagen to Seattle in July is currently the most expensive (average of £454). 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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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?

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