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$396+ Cheap flights from Copenhagen (CPH) to Seattle (SEA)

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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
1 adult, Economy
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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 Thursday or Tuesday and return on a Monday

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 July 2, 2025.

Round-trip from

$553
(Ticket)

One-way from

$396
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$870

Good round-trip deal

$796 or less

Good one-way deal

$743 or less
From Kastrup Copenhagen to Seattle/Tacoma Intl
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One-way flight from Kastrup Copenhagen to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 19% potential increase in price ($145 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Kastrup Copenhagen to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Kastrup Copenhagen to Seattle/Tacoma Intl.
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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 July 2, 2025.

This Ticket deal was found by Cheapflights users on 7/2. 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 8/227:20 amCPH - SEA
1 stop13h 05mIcelandair
Fri 9/57:00 pmSEA - CPH
1 stop11h 45mIcelandair
Deal found 7/2$553
This Booking.com deal was found by Cheapflights users on 6/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/225:40 pmCPH - SEA
1 stop26h 55mBritish Airways
Fri 9/51:30 pmSEA - CPH
1 stop25h 05mBritish Airways
Deal found 6/30$555
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Fri 8/227:25 amCPH - SEA
2 stops24h 01mAmerican Airlines
Fri 9/53:40 pmSEA - CPH
2 stops22h 55mAmerican Airlines
Deal found 6/30$562
This Flightsearch deal was found by Cheapflights users on 7/1. 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 Flightsearch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/189:40 amCPH - SEA
1 stop14h 15mMultiple Airlines
Wed 9/37:15 amSEA - CPH
2 stops24h 10mMultiple Airlines
Deal found 7/1$572
This Ticket deal was found by Cheapflights users on 7/1. 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.
Tue 9/212:45 pmCPH - SEA
2 stops34h 31mAir Canada
Sun 9/77:15 amSEA - CPH
1 stop14h 55mAir Canada
Deal found 7/1$573
This Ticket deal was found by Cheapflights users on 7/2. 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 8/228:50 amCPH - SEA
2 stops20h 52mLufthansa
Fri 9/51:55 pmSEA - CPH
2 stops19h 30mLufthansa
Deal found 7/2$579
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Sun 7/206:05 amCPH - SEA
2 stops25h 11mUnited Airlines
Tue 9/237:15 amSEA - CPH
1 stop15h 15mUnited Airlines
Deal found 6/30$582
This Flysmarter deal was found by Cheapflights users on 7/1. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/158:50 amCPH - SEA
2 stops19h 26mFinnair
Fri 8/227:44 amSEA - CPH
2 stops19h 51mFinnair
Deal found 7/1$592
This Flightnetwork deal was found by Cheapflights users on 6/30. 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 8/221:05 pmCPH - SEA
Nonstop9h 45mScandinavian Airlines
Fri 9/54:00 pmSEA - CPH
Nonstop9h 30mScandinavian Airlines
Deal found 6/30$608
This SWISS deal was found by Cheapflights users on 6/30. 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.
Thu 7/246:40 amCPH - SEA
2 stops25h 02mSWISS
Tue 9/232:29 pmSEA - CPH
2 stops18h 41mSWISS
Deal found 6/30$619

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 July 2, 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 8/22

7:20 am-11:25 am

1 stop13h 05m

Seattle/Tacoma Intl

Fri 9/5

7:00 pm-3:45 pm

1 stop11h 45m

$553

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/22

5:40 pm-11:35 am

1 stop26h 55m

Seattle/Tacoma Intl

Fri 9/5

1:30 pm-11:35 pm

1 stop25h 05m

$555

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/22

7:25 am-10:26 pm

2 stops24h 01m

Seattle/Tacoma Intl

Fri 9/5

3:40 pm-11:35 pm

2 stops22h 55m

$562

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 8/18

9:40 am-2:55 pm

1 stop14h 15m

Seattle/Tacoma Intl

Wed 9/3

7:15 am-4:25 pm

2 stops24h 10m

$572

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 9/2

12:45 pm-2:16 pm

2 stops34h 31m

Seattle/Tacoma Intl

Sun 9/7

7:15 am-7:10 am

1 stop14h 55m

$573

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/22

8:50 am-8:42 pm

2 stops20h 52m

Seattle/Tacoma Intl

Fri 9/5

1:55 pm-6:25 pm

2 stops19h 30m

$579

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 7/20

6:05 am-2:16 pm

2 stops17h 11m

Seattle/Tacoma Intl

Sat 9/27

7:15 am-7:10 am

1 stop14h 55m

$582

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/15

8:50 am-7:16 pm

2 stops19h 26m

Seattle/Tacoma Intl

Fri 8/22

7:44 am-12:35 pm

2 stops19h 51m

$592

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/22

1:05 pm-1:50 pm

Nonstop9h 45m

Seattle/Tacoma Intl

Fri 9/5

4:00 pm-10:30 am

Nonstop9h 30m

$608

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 7/24

6:40 am-10:42 pm

2 stops25h 02m

Seattle/Tacoma Intl

Mon 9/22

3:19 pm-6:30 pm

2 stops18h 11m

$619

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 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 June 27, 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 $390). 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 July 2, 2025.

It’s typically best to fly out from Copenhagen to Seattle in the evening. Doing so could potentially save you 45% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip 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 July 2, 2025.
Read reviews from past customers who have flown Finnair, SWISS, and United Airlines from Copenhagen to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,301 reviews

Boarding

7.6

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,301 reviews
Finnair
7.6
Good
1,301 reviews

Boarding

7.6

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
SWISS
7.5
Good
1,654 reviews
Finnair
7.6
Good
1,301 reviews

Boarding

7.6

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
United Airlines
7.4
Good
8,861 reviews
Finnair
7.6
Good
1,301 reviews

Boarding

7.6

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Scandinavian Airlines
7.3
Good
1,415 reviews
Finnair
7.6
Good
1,301 reviews

Boarding

7.6

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
American Airlines
7.2
Good
10,000 reviews
Finnair
7.6
Good
1,301 reviews

Boarding

7.6

Food

6.7

Overall

7.6

Crew

8.1

Entertainment

6.8

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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 airports do I use to fly from Copenhagen to Seattle?

    If you book a flight from Copenhagen to Seattle, you will be flying from Kastrup Copenhagen to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from Kastrup Copenhagen (CPH) take 9h 45m for a nonstop flight. There is 1 flight from Kastrup Copenhagen to Seattle per day from 8 airlines.

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

    According to our current data, Icelandair ($553), British Airways ($555), and American Airlines ($562) offers the cheapest pricing from Copenhagen to Seattle. You may be able to fly from Copenhagen to Seattle for 8% 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 $545. Users have also found prices from $583 and $608 on Icelandair and Lufthansa, respectively.

  • What are the cheapest flights from Copenhagen to Seattle?

    While on average a flight from Copenhagen to Seattle is generally $969, our data shows the cheapest flight currently is $512. When looking at the most popular route, (Kastrup Copenhagen - Seattle/Tacoma Intl), you can expect to pay $514 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 $390). 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
Ocean Shores
Lacey
Leavenworth
Lynnwood
Renton
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Federal Way
Chehalis
Kirkland
Aberdeen
Shelton

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 8 airlines flying from Copenhagen to Seattle

Discover the top 8 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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$430Average$599FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$456Average$556FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$463Average$554FlexibilityNo cancel feeOn-time70%
KLMCheapest$469Average$607FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$479Average$717FlexibilityNo cancel feeOn-time76%
DeltaCheapest$498Average$600FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$516Average$658FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$594Average$808FlexibilityNo cancel feeOn-time77%

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