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$351+ Cheap flights from Seattle (SEA) to Copenhagen (CPH)

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPH
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Kastrup Copenhagen are usually found in February or November, booked 90 days in advance, depart on a Monday or Tuesday and return on a Thursday

Cheap flight deals from Seattle to Copenhagen

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Copenhagen (CPH). 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 June 12, 2025.

Round-trip from

$536
(Gotogate)

One-way from

$351
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$777

Good round-trip deal

$589 or less

Good one-way deal

$410 or less
From Seattle/Tacoma Intl to Kastrup Copenhagen
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One-way flight from Seattle/Tacoma Intl to Kastrup Copenhagen
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Highest demand for flights based on searches. 10% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Kastrup Copenhagen.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Kastrup Copenhagen.
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Find flight deals from Seattle to Copenhagen

Cheapest flights from Seattle to Copenhagen
Explore the most affordable flight options available from Seattle to Copenhagen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/611:30 pmSEA - CPH
1 stop21h 50mIcelandair
Sun 8/2410:35 pmCPH - SEA
1 stop21h 50mIcelandair
Deal found 6/11$538
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/64:00 pmSEA - CPH
Nonstop9h 30mScandinavian Airlines
Mon 9/11:05 pmCPH - SEA
Nonstop9h 45mScandinavian Airlines
Deal found 6/11$544
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Sat 8/165:30 amSEA - CPH
2 stops40h 40mAir Canada
Fri 9/1212:25 pmCPH - SEA
1 stop16h 06mAir Canada
Deal found 6/11$550
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/1012:20 amSEA - CPH
2 stops32h 00mUnited Airlines
Fri 8/2212:25 pmCPH - SEA
1 stop17h 16mUnited Airlines
Deal found 6/12$551
This Finnair deal was found by Cheapflights users on 6/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:30 pmSEA - CPH
1 stop20h 45mFinnair
Wed 10/228:40 amCPH - SEA
2 stops19h 14mFinnair
Deal found 6/10$558
This Finnair deal was found by Cheapflights users on 6/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/38:20 pmSEA - CPH
1 stop18h 10mMultiple Airlines
Wed 10/18:40 amCPH - SEA
2 stops19h 29mMultiple Airlines
Deal found 6/10$559
This Lufthansa deal was found by Cheapflights users on 6/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/310:00 amSEA - CPH
2 stops15h 50mLufthansa
Wed 10/16:10 amCPH - SEA
2 stops17h 06mLufthansa
Deal found 6/10$568
This Delta deal was found by Cheapflights users on 6/12. 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.
Mon 7/282:05 pmSEA - CPH
1 stop19h 15mDelta
Mon 8/119:00 amCPH - SEA
1 stop23h 15mDelta
Deal found 6/12$569
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Sun 8/35:40 pmSEA - CPH
1 stop16h 55mAmerican Airlines
Fri 8/151:15 pmCPH - SEA
2 stops19h 25mAmerican Airlines
Deal found 6/11$575
This Gurufare deal was found by Cheapflights users on 6/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/111:32 pmSEA - CPH
2 stops22h 23mBritish Airways
Mon 8/252:00 pmCPH - SEA
1 stop17h 26mBritish Airways
Deal found 6/11$585
This SWISS deal was found by Cheapflights users on 6/12. 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.
Mon 7/214:25 pmSEA - CPH
1 stop22h 00mSWISS
Mon 8/258:10 pmCPH - SEA
2 stops31h 39mSWISS
Deal found 6/12$653

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Copenhagen 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 June 12, 2025.
Use the filters below to find and compare flights from Seattle to Copenhagen that are best for you.

Fly from

Seattle

Fly to

Copenhagen

Route

Depart

Return

Price

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 7/6

11:30 pm-6:20 am

1 stop21h 50m

Kastrup Copenhagen

Sun 8/24

10:35 pm-11:25 am

1 stop21h 50m

$538

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 8/6

4:00 pm-10:30 am

Nonstop9h 30m

Kastrup Copenhagen

Mon 9/1

1:05 pm-1:50 pm

Nonstop9h 45m

$544

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 8/16

5:30 am-7:10 am

2 stops40h 40m

Kastrup Copenhagen

Fri 9/12

12:25 pm-7:31 pm

1 stop16h 06m

$550

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 8/10

12:20 am-5:20 pm

2 stops32h 00m

Kastrup Copenhagen

Fri 8/22

12:25 pm-8:41 pm

1 stop17h 16m

$551

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 10/7

1:30 pm-7:15 pm

1 stop20h 45m

Kastrup Copenhagen

Wed 10/22

8:40 am-6:54 pm

2 stops19h 14m

$558

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 9/3

8:20 pm-11:30 pm

1 stop18h 10m

Kastrup Copenhagen

Wed 10/1

8:40 am-7:09 pm

2 stops19h 29m

$559

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 9/3

10:00 am-10:50 am

2 stops15h 50m

Kastrup Copenhagen

Wed 10/1

6:10 am-2:16 pm

2 stops17h 06m

$568

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 7/28

2:05 pm-6:20 pm

1 stop19h 15m

Kastrup Copenhagen

Mon 8/11

9:00 am-11:15 pm

1 stop23h 15m

$569

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 8/3

5:40 pm-7:35 pm

1 stop16h 55m

Kastrup Copenhagen

Fri 8/15

1:15 pm-11:40 pm

2 stops19h 25m

$575

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 8/11

1:32 pm-8:55 pm

2 stops22h 23m

Kastrup Copenhagen

Mon 8/25

2:00 pm-10:26 pm

1 stop17h 26m

$585

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 23 results
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Best time to book a flight from Seattle to Copenhagen

Have a flexible travel schedule? Discover the best time to fly to Copenhagen from Seattle 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 Seattle to Copenhagen

How far ahead should I book a flight from Seattle to Copenhagen?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Copenhagen. Price data was last updated on June 9, 2025.

The price you pay for your flight from Seattle to Copenhagen may vary depending on when you book. For the best chance of a lower fare, look to book 90 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 Seattle to Copenhagen?

Currently, November is the cheapest month in which you can book a flight from Seattle to Copenhagen (average of $523). Flying from Seattle to Copenhagen in June is currently the most expensive (average of $911). 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 SEA to CPH?

Find hourly flight availability from Seattle to Copenhagen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 20% on flights from Seattle to Copenhagen by exploring options for tickets in the evening.

What is the cheapest day to fly from Seattle to Copenhagen?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Copenhagen. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Copenhagen flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Copenhagen by month

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

In terms of precipitation, rainfall in Copenhagen ranges from 0.8 - 2.8 inches per month. August is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit Copenhagen when rainfall is around 0.8 in.

Temperature in Copenhagen by month

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

If weather is an important factor for your trip to Copenhagen, 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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing Copenhagen

Get insights into the airlines that provide service to Copenhagen. 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 Copenhagen. Reviews last updated June 12, 2025.
Read reviews from past customers who have flown Delta, Alaska Airlines and KLM from Seattle to Copenhagen. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Alaska Airlines
8.0
Very good
10,000 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Copenhagen. 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 Seattle to Copenhagen?

    If you book a flight from Seattle to Copenhagen, you will be flying from Seattle/Tacoma Intl to Kastrup Copenhagen. Flights to Kastrup Copenhagen (CPH) from Seattle/Tacoma Intl (SEA) take 9h 30m for a nonstop flight. There is 1 flight from Seattle/Tacoma Intl to Copenhagen per day from 11 airlines.

  • How popular is this Seattle to Copenhagen flight route?

    Within the past month, 3 users have taken a look at flights from Seattle/Tacoma Intl to Kastrup Copenhagen.

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

    Icelandair, at $536, was found to be the cheapest airline from Seattle to Copenhagen.Alternate airlines to your destination round-trip include Scandinavian Airlines and Air Canada. Icelandair is 16% cheaper than the average price of flights available within the next 90 days to this destination.

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

    One-way options have recently been found by users for as low as $367 on Icelandair. Other airlines that offer cheap prices include Air Canada from $394 and American Airlines from $415 one-way.

  • What are the cheapest flights from Seattle to Copenhagen?

    On average you can expect to pay $1,549 for a flight from Seattle to Copenhagen. The cheapest flight overall is $374 while the most popular route, (Seattle/Tacoma Intl - Kastrup Copenhagen) is currently priced at $459.

  • Where are the most common layover locations when flying from Seattle to Copenhagen?

    The most popular layover on flights from Seattle to Copenhagen is Reykjavik.

  • What are some popular things to do or see while on a layover in Reykjavik?

    If you're on a layover in Reykjavik and looking for things to do, consider visiting Hallgrímskirkja, Harpa, or Laugardalslaug Geothermal Pool. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are located about 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Those landing in Reykjavik looking to spend some time exploring during their layover can rent a car for about $66 per day.

  • Where are the least popular layover locations for Seattle to Copenhagen flights?

    Seattle to Copenhagen flights have a layover in London the least frequently.

  • Can I find deals for flights from Seattle to Copenhagen that include hotel bookings?

    Yes. In addition to deals on Seattle to Copenhagen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Copenhagen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Copenhagen.

  • Can I find deals for business class flights from Seattle to Copenhagen?

    Yes. Cheapflights offers flight deals from Seattle to Copenhagen 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 Seattle to Copenhagen?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Copenhagen (average of $523). Flying from Seattle to Copenhagen in June is currently the most expensive (average of $911). 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 Seattle?

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Kastrup

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Top 10 airlines flying from Seattle to Copenhagen

Discover the top 10 airlines that operate flights from Seattle to Copenhagen. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$411Average$582FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$475Average$601FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$489Average$729FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$490Average$679FlexibilityNo cancel feeOn-time70%
FinnairCheapest$504Average$754FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$520Average$709FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$524Average$746FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$532Average$683FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$553Average$801FlexibilityNo cancel feeOn-time76%
KLMCheapest$572Average$835FlexibilityNo cancel feeOn-time75%

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