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Cheap flights from Seattle to Copenhagen from C$ 518

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPH
3 Jan — 10 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Copenhagen

Enter your travel dates to find the best prices.

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 4 December 2025.

Sat 6/127:29 p.m.SEA - CPH
2 stops37h 06mUnited Airlines
Wed 10/128:55 a.m.CPH - SEA
1 stop13h 25mUnited Airlines
Deal found 4/12C$ 761
Wed 3/1210:40 a.m.SEA - CPH
3 stops22h 25mUnited Airlines
Sat 13/126:50 a.m.CPH - SEA
2 stops24h 38mUnited Airlines
Deal found 3/12C$ 931
Thu 25/127:05 a.m.SEA - CPH
2 stops26h 15mUnited Airlines
Sun 11/12:30 p.m.CPH - SEA
2 stops41h 13mUnited Airlines
Deal found 3/12C$ 1,196
Wed 24/123:50 p.m.SEA - CPH
2 stops41h 30mUnited Airlines
Tue 6/11:10 p.m.CPH - SEA
2 stops42h 06mUnited Airlines
Deal found 4/12C$ 1,383
Tue 16/128:10 a.m.SEA - CPH
2 stops29h 55mUnited Airlines
Mon 22/1210:10 a.m.CPH - SEA
2 stops45h 06mUnited Airlines
Deal found 3/12C$ 1,549
Wed 3/123:05 p.m.SEA - CPH
1 stop16h 10mMultiple Airlines
Sat 13/121:15 p.m.CPH - SEA
1 stop19h 43mMultiple Airlines
Deal found 3/12C$ 1,566
Sun 7/127:00 a.m.SEA - CPH
2 stops19h 25mUnited Airlines
Thu 11/127:05 a.m.CPH - SEA
1 stop14h 05mUnited Airlines
Deal found 2/12C$ 2,050
Fri 26/121:35 p.m.SEA - CPH
2 stops37h 50mUnited Airlines
Sat 3/112:40 p.m.CPH - SEA
3 stops41h 27mUnited Airlines
Deal found 3/12C$ 2,222

Find 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 4 December 2025.

Round-trip from

C$ 692

One-way from

C$ 518

Popular in

June

Cheapest in

October

Average price

C$ 1,044
Finnair
  • Finnair
  • 18/3-25/3
  • 4 total stops
  • 40h 41m total
  • Seattle to Copenhagen
Search Deals
Delta
  • Delta
  • 15/4
  • 1 total stop
  • 14h 30m total
  • Seattle to Copenhagen
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 629,999 searches. Data last updated 4 December 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

Wed 18/3

7:50 p.m.-11:55 p.m.

2 stops20h 05m

Kastrup Copenhagen

Wed 25/3

8:40 a.m.-9:16 p.m.

2 stops20h 36m

C$ 692

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 24/4

6:50 p.m.-6:40 p.m.

1 stop14h 50m

Kastrup Copenhagen

Wed 29/4

12:25 p.m.-4:24 p.m.

2 stops36h 59m

C$ 696

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 1/1

6:50 p.m.-10:45 p.m.

1 stop18h 55m

Kastrup Copenhagen

Tue 13/1

6:25 a.m.-4:55 p.m.

1 stop19h 30m

C$ 717

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 17/3

8:59 a.m.-2:10 p.m.

3 stops21h 11m

Kastrup Copenhagen

Thu 26/3

6:55 a.m.-10:45 p.m.

2 stops23h 50m

C$ 747

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 1/5

12:15 p.m.-10:50 a.m.

1 stop13h 35m

Kastrup Copenhagen

Wed 6/5

6:40 a.m.-12:20 p.m.

1 stop14h 40m

C$ 748

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 19/4

11:59 p.m.-10:50 a.m.

2 stops25h 51m

Kastrup Copenhagen

Thu 23/4

6:40 a.m.-12:20 p.m.

1 stop14h 40m

C$ 754

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 17/1

8:40 a.m.-12:25 p.m.

2 stops18h 45m

Kastrup Copenhagen

Sat 24/1

6:50 a.m.-12:10 p.m.

1 stop14h 20m

C$ 755

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 19/3

7:50 p.m.-11:55 p.m.

2 stops20h 05m

Kastrup Copenhagen

Wed 25/3

8:40 a.m.-9:16 p.m.

2 stops20h 36m

C$ 762

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 24/1

7:00 a.m.-12:25 p.m.

2 stops20h 25m

Kastrup Copenhagen

Thu 29/1

7:05 a.m.-10:43 p.m.

3 stops24h 38m

C$ 769

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 10/1

5:10 p.m.-2:00 p.m.

2 stops59h 50m

Kastrup Copenhagen

Wed 21/1

6:50 a.m.-9:12 p.m.

3 stops23h 22m

C$ 772

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 19 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 28 November 2025.

The best time to book flights from Seattle to Copenhagen is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 C$ 469). Flying from Seattle to Copenhagen in June is currently the most expensive (average of C$ 772). 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 4 December 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 51% on flights from Seattle to Copenhagen by exploring options for tickets at noon.

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 4 December 2025.
Check out reviews from past customers who have flown with Scandinavian Airlines and Icelandair from Seattle to Copenhagen to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.4
Good
1,591 reviews
Check prices

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great flight
Scandinavian Airlines
7.4
Good
1,591 reviews
Scandinavian Airlines
7.4
Good
1,591 reviews
Check prices

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great flight
Icelandair
7.0
Good
584 reviews
Scandinavian Airlines
7.4
Good
1,591 reviews
Check prices

Boarding

7.6

Entertainment

6.7

Food

6.7

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

OSL - CPH

Good was ok. Complimentary wine and beer was nice. Soft drinks should have been free too. Overall great 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.

  • How popular is this Seattle to Copenhagen flight route?

    The Seattle/Tacoma Intl to Kastrup Copenhagen flight path was viewed by 60 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 Seattle to Copenhagen?

    For as low as C$ 696, Finnair can have you in Copenhagen from Seattle in 14h 50m. There are 7805 km between Seattle and Copenhagen. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Flying on Icelandair is currently your cheapest option to Copenhagen, with prices starting at C$ 638. Another option worth looking into is Scandinavian Airlines, starting at C$ 645 round trip. These flights start at 26% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Seattle to Copenhagen?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Copenhagen on time: Air France (80%), Scandinavian Airlines (80%), Delta (80%).

  • 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 C$ 469). Flying from Seattle to Copenhagen in June is currently the most expensive (average of C$ 772). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Seattle to Copenhagen

Discover the top 2 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 629,999 searches. Data last updated 4 December 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 638AverageC$ 770FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapestC$ 645AverageC$ 788FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Copenhagen?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Copenhagen. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Copenhagen?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Copenhagen.

Can Cheapflights find flights from Seattle to Copenhagen with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Copenhagen flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle to Copenhagen become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Copenhagen flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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