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Cheap flights from Copenhagen to Seattle from £251

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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
3 ינו' — 10 ינו'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

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 4 דצמבר 2025.

ה' 11/1207:05CPH - SEA
1 stop14h 05mUnited Airlines
ו' 9/109:25SEA - CPH
2 stops43h 35mUnited Airlines
Deal found 3/12£518
ה' 11/1207:05CPH - SEA
1 stop14h 05mUnited Airlines
ד' 14/115:10SEA - CPH
1 stop17h 25mUnited Airlines
Deal found 3/12£521
ה' 11/1207:05CPH - SEA
1 stop14h 05mLufthansa
א' 11/115:10SEA - CPH
1 stop17h 25mLufthansa
Deal found 3/12£521
ה' 11/1209:55CPH - SEA
2 stops21h 28mDelta
ב' 12/107:10SEA - CPH
2 stops16h 50mDelta
Deal found 3/12£523
ה' 11/1207:05CPH - SEA
2 stops22h 55mUnited Airlines
ג' 13/117:10SEA - CPH
2 stops34h 15mUnited Airlines
Deal found 3/12£525
ד' 10/1206:15CPH - SEA
1 stop19h 45mIcelandair
ג' 13/114:35SEA - CPH
1 stop12h 10mIcelandair
Deal found 3/12£527
ד' 10/1214:15CPH - SEA
1 stop30h 35mDelta
ב' 12/107:10SEA - CPH
2 stops21h 00mDelta
Deal found 3/12£527
ד' 10/1206:00CPH - SEA
1 stop16h 20mLufthansa
ש' 10/107:00SEA - CPH
2 stops17h 20mLufthansa
Deal found 3/12£567
ג' 9/1206:50CPH - SEA
1 stop14h 20mLufthansa
א' 11/107:00SEA - CPH
2 stops20h 25mLufthansa
Deal found 3/12£592
ג' 9/1206:50CPH - SEA
1 stop14h 20mLufthansa
ש' 10/107:00SEA - CPH
2 stops17h 20mLufthansa
Deal found 3/12£593
ו' 5/1206:50CPH - SEA
2 stops38h 28mUnited Airlines
ש' 10/108:10SEA - CPH
2 stops20h 50mUnited Airlines
Deal found 2/12£594

Find 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 4 דצמבר 2025.

Round-trip from

£421

One-way from

£251

Popular in

July

Cheapest in

February

Average price

£546
SWISS
  • SWISS
  • 14/2-18/2
  • 4 total stops
  • 43h 13m total
  • Copenhagen to Seattle
Search Deals
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 (£79 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 December 2025
Search Deals

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 4 דצמבר 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

ש' 14/2

06:40-22:43

2 stops25h 03m

Seattle/Tacoma Intl

ד' 18/2

10:55-14:05

2 stops18h 10m

£421

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

א' 18/1

10:05-22:43

2 stops21h 38m

Seattle/Tacoma Intl

א' 25/1

12:57-14:00

3 stops40h 03m

£449

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

ו' 9/1

08:05-20:46

2 stops21h 41m

Seattle/Tacoma Intl

א' 25/1

16:45-19:50

1 stop18h 05m

£450

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

א' 14/12

06:55-21:50

2 stops23h 55m

Seattle/Tacoma Intl

ד' 17/12

18:50-21:50

1 stop18h 00m

£872

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

ב' 15/12

06:00-11:50

1 stop14h 50m

Seattle/Tacoma Intl

ה' 18/12

13:40-14:40

1 stop16h 00m

£1,224

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

ש' 17/1

19:50-20:57

4 stops58h 07m

Seattle/Tacoma Intl

ש' 24/1

08:10-08:50

4 stops39h 40m

£2,332

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

ו' 16/1

18:15-20:34

3 stops35h 19m

Seattle/Tacoma Intl

ו' 23/1

17:59-23:25

3 stops44h 26m

£12,022

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

ב' 12/1

06:55-14:18

3 stops40h 23m

Seattle/Tacoma Intl

א' 25/1

17:59-21:45

3 stops42h 46m

£12,037

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

ו' 6/2

20:50-11:30

1 stop23h 40m

£251

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

ב' 23/3

18:35-12:30

1 stop25h 55m

£251

Flights are sorted by cheapest return flights first.

Deals found on 2/12

Showing 1-10 of 18 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 28 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 £302). Flying from Copenhagen to Seattle in July is currently the most expensive (average of £445). 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 £450, SWISS can have you in Seattle from Copenhagen in 21h 41m. 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 Air France (60%), Scandinavian Airlines (60%) and Delta (60%).

  • 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 £302). Flying from Copenhagen to Seattle in July is currently the most expensive (average of £445). 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
SeaTac

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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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