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$501+ Cheap flights from Copenhagen (CPH) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Find cheap flights from Copenhagen to Seattle with Cheapflights

1. Tell us where you want to go

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2. Select your favorite providers

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3. Compare prices and book

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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 Monday 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 April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$501
(Ticket)

Popular in

July

Cheapest in

February

Average price

$615

Good one-way deal

$809 or less
Provider with most accurate pricing for Kastrup Copenhagen-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kastrup Copenhagen-Seattle/Tacoma Intl flights.
Search Deals
From Kastrup Copenhagen to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($139 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a one-way flight from Kastrup Copenhagen to Seattle/Tacoma Intl.
Search Deals

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 April 29, 2025.

This Ticket deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1211:00 amCPH - SEA
2 stops19h 38mBritish Airways
Sat 9/206:18 amSEA - CPH
2 stops21h 17mBritish Airways
Deal found 4/29$501
This Air Canada deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1212:25 pmCPH - SEA
1 stop16h 06mAir Canada
Sun 9/217:20 amSEA - CPH
1 stop14h 50mAir Canada
Deal found 4/29$509
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/118:50 amCPH - SEA
2 stops19h 03mAmerican Airlines
Sat 9/207:42 amSEA - CPH
2 stops18h 33mAmerican Airlines
Deal found 4/29$510
This Sembo deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:15 pmCPH - SEA
1 stop30h 55mLufthansa
Tue 1/63:10 pmSEA - CPH
1 stop17h 20mLufthansa
Deal found 4/29$516
This Flightnetwork deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2310:35 pmCPH - SEA
1 stop31h 05mIcelandair
Fri 6/67:00 pmSEA - CPH
1 stop26h 20mIcelandair
Deal found 4/29$518
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:55 amCPH - SEA
2 stops45h 17mUnited Airlines
Tue 1/63:10 pmSEA - CPH
1 stop12h 30mUnited Airlines
Deal found 4/29$526
This Scandinavian Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/121:05 pmCPH - SEA
Nonstop9h 55mScandinavian Airlines
Sun 9/214:20 pmSEA - CPH
Nonstop9h 40mScandinavian Airlines
Deal found 4/29$546
This Ovago deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/148:50 amCPH - SEA
1 stop16h 10mFinnair
Mon 6/301:30 pmSEA - CPH
2 stops17h 45mFinnair
Deal found 4/29$566
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2312:25 pmCPH - SEA
2 stops29h 56mMultiple Airlines
Mon 7/74:25 pmSEA - CPH
1 stop22h 00mMultiple Airlines
Deal found 4/29$609
This ResecentrumGruppen deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/236:50 amCPH - SEA
2 stops21h 03mBrussels Airlines
Fri 6/68:00 amSEA - CPH
2 stops18h 05mBrussels Airlines
Deal found 4/29$687
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/236:00 amCPH - SEA
1 stop14h 40mDelta
Fri 6/69:45 pmSEA - CPH
1 stop23h 45mDelta
Deal found 4/29$696
This SWISS deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/196:40 amCPH - SEA
1 stop17h 10mSWISS
Sat 8/94:20 pmSEA - CPH
1 stop22h 05mSWISS
Deal found 4/29$721

Cheapflights Fare Finder

Customize 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 2,558,603 searches. Data last updated April 29, 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

Fri 9/12

11:00 am-9:38 pm

2 stops19h 38m

Seattle/Tacoma Intl

Sat 9/20

6:18 am-12:35 pm

2 stops21h 17m

$501

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 9/12

12:25 pm-7:31 pm

1 stop16h 06m

Seattle/Tacoma Intl

Sun 9/21

7:20 am-7:10 am

1 stop14h 50m

$509

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 9/11

2:00 pm-9:38 pm

1 stop16h 38m

Seattle/Tacoma Intl

Sat 9/20

7:42 am-12:35 pm

2 stops19h 53m

$510

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 5/23

10:35 pm-8:40 pm

1 stop31h 05m

Seattle/Tacoma Intl

Fri 6/6

3:45 pm-6:20 am

1 stop29h 35m

$515

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 10/10

1:05 pm-2:00 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Fri 10/17

4:20 pm-11:00 am

Nonstop9h 40m

$545

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 6/12

6:10 am-12:25 pm

1 stop15h 15m

Seattle/Tacoma Intl

Thu 6/19

11:35 am-10:50 am

1 stop14h 15m

$563

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 5/23

6:10 am-12:25 pm

1 stop15h 15m

Seattle/Tacoma Intl

Fri 6/6

2:15 pm-6:25 pm

1 stop19h 10m

$576

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 6/7

6:10 am-8:37 pm

2 stops23h 27m

Seattle/Tacoma Intl

Sat 6/14

11:35 am-6:45 pm

2 stops46h 10m

$577

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 10/11

7:20 pm-6:36 pm

2 stops32h 16m

Seattle/Tacoma Intl

Sun 10/19

1:45 pm-2:15 pm

2 stops15h 30m

$661

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 5/23

6:00 am-11:40 am

1 stop14h 40m

Seattle/Tacoma Intl

Fri 6/6

9:45 pm-6:30 am

1 stop23h 45m

$696

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 23 results
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Compare providers for flights from Copenhagen to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Copenhagen to Seattle in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Copenhagen-Seattle flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Copenhagen-Seattle flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Copenhagen-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Copenhagen-Seattle flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Copenhagen-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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 round-trip flight from Copenhagen to Seattle. Price data was last updated on April 25, 2025.

Booking 49 days in advance of your planned departure date is, on average, the best time to get cheap flights from Copenhagen to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 $238). Flying from Copenhagen to Seattle in July is currently the most expensive (average of $405). 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 April 29, 2025.

It’s typically best to fly out from Copenhagen to Seattle in the evening. Doing so could potentially save you 46% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 April 29, 2025.
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    According to our current data, British Airways ($501), Air Canada ($509), and American Airlines ($510) offers the cheapest pricing from Copenhagen to Seattle. You may be able to fly from Copenhagen to Seattle for 16% less than the average price by searching for these airlines.

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

    For one-way options, check prices for British Airways. According to our data, you can fly for as low as $505. Users have also found prices from $551 and $562 on Lufthansa and SWISS, respectively.

  • What are the cheapest flights from Copenhagen to Seattle?

    While on average a flight from Copenhagen to Seattle is generally $1,317, our data shows the cheapest flight currently is $611. When looking at the most popular route, (Kastrup Copenhagen - Seattle/Tacoma Intl), you can expect to pay $459 for that flight.

  • 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 vacation 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 $238). Flying from Copenhagen to Seattle in July is currently the most expensive (average of $405). 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

Traveling to a place near Copenhagen?

Book flights to Copenhagen if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Lynnwood
Aberdeen
Shelton
Silverdale
Redmond
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Copenhagen to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Copenhagen to Portland flights
Billund to Seattle flights

Top 9 airlines flying from Copenhagen to Seattle

Discover the top 9 airlines that operate flights from Copenhagen to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$410Average$599FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$426Average$535FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$456Average$556FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$468Average$614FlexibilityNo cancel feeOn-time70%
KLMCheapest$468Average$607FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$483Average$717FlexibilityNo cancel feeOn-time76%
DeltaCheapest$507Average$632FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$515Average$658FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$579Average$840FlexibilityNo cancel feeOn-time77%

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