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Cheap flights from Seattle to Copenhagen from C$ 516

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPH
20 Aug — 27 Aug1
1 adult

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 15 August 2025.

Round-trip from

C$ 649

One-way from

C$ 516

Popular in

June

Cheapest in

February

Average price

C$ 860

Good round-trip deal

C$ 860 or less
Icelandair
  • Icelandair
  • 14/10-24/10
  • 2 total stops
  • 25h 00m total
  • Seattle to Copenhagen
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Delta
  • Delta
  • 5/9
  • 1 total stop
  • 23h 45m total
  • Seattle to Copenhagen
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Highest demand for flights based on searches. 8% potential increase in price (C$ 118 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 24 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip 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 15 August 2025.

Tue 14/103:45 p.m.SEA - CPH
1 stop12h 10mIcelandair
Fri 24/102:00 p.m.CPH - SEA
1 stop12h 50mIcelandair
Deal found 14/8C$ 649
Tue 7/103:45 p.m.SEA - CPH
1 stop21h 00mIcelandair
Sat 11/1010:35 p.m.CPH - SEA
1 stop31h 05mIcelandair
Deal found 13/8C$ 651
Wed 15/104:20 p.m.SEA - CPH
Nonstop9h 30mScandinavian Airlines
Wed 22/101:10 p.m.CPH - SEA
Nonstop9h 50mScandinavian Airlines
Deal found 13/8C$ 660
Wed 10/93:45 p.m.SEA - CPH
1 stop12h 10mIcelandair
Tue 23/94:45 p.m.CPH - SEA
1 stop12h 55mIcelandair
Deal found 14/8C$ 667
Wed 10/93:45 p.m.SEA - CPH
1 stop21h 00mIcelandair
Mon 22/911:05 p.m.CPH - SEA
1 stop27h 45mIcelandair
Deal found 14/8C$ 670
Sun 14/97:15 a.m.SEA - CPH
1 stop14h 55mUnited Airlines
Mon 29/912:25 p.m.CPH - SEA
2 stops39h 06mUnited Airlines
Deal found 15/8C$ 674
Thu 11/93:45 p.m.SEA - CPH
1 stop12h 10mIcelandair
Mon 22/911:05 p.m.CPH - SEA
1 stop27h 45mIcelandair
Deal found 13/8C$ 681
Fri 3/107:00 p.m.SEA - CPH
1 stop17h 45mIcelandair
Thu 16/102:00 p.m.CPH - SEA
1 stop12h 50mIcelandair
Deal found 13/8C$ 684
Fri 3/107:00 p.m.SEA - CPH
1 stop17h 45mIcelandair
Sat 11/1010:35 p.m.CPH - SEA
1 stop28h 15mIcelandair
Deal found 13/8C$ 685
Mon 29/97:00 p.m.SEA - CPH
1 stop32h 55mIcelandair
Fri 10/1010:35 p.m.CPH - SEA
1 stop31h 05mIcelandair
Deal found 12/8C$ 688
Wed 10/912:00 p.m.SEA - CPH
1 stop13h 50mUnited Airlines
Tue 23/912:45 p.m.CPH - SEA
2 stops39h 04mUnited Airlines
Deal found 14/8C$ 691
Sun 28/93:45 p.m.SEA - CPH
1 stop12h 10mIcelandair
Tue 7/102:00 p.m.CPH - SEA
1 stop15h 40mIcelandair
Deal found 12/8C$ 693

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 15 August 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

Tue 14/10

3:45 p.m.-12:55 p.m.

1 stop12h 10m

Kastrup Copenhagen

Fri 24/10

2:00 p.m.-5:50 p.m.

1 stop12h 50m

C$ 649

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 19/10

3:45 p.m.-9:45 p.m.

1 stop21h 00m

Kastrup Copenhagen

Fri 24/10

4:45 p.m.-8:40 p.m.

1 stop12h 55m

C$ 649

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 15/10

3:45 p.m.-12:55 p.m.

1 stop12h 10m

Kastrup Copenhagen

Sun 19/10

4:45 p.m.-8:40 p.m.

1 stop12h 55m

C$ 649

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 14/10

3:45 p.m.-12:55 p.m.

1 stop12h 10m

Kastrup Copenhagen

Wed 22/10

4:45 p.m.-8:40 p.m.

1 stop12h 55m

C$ 649

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 10/10

7:00 p.m.-9:45 p.m.

1 stop17h 45m

Kastrup Copenhagen

Mon 13/10

4:45 p.m.-8:40 p.m.

1 stop12h 55m

C$ 649

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 10/10

3:45 p.m.-9:45 p.m.

1 stop21h 00m

Kastrup Copenhagen

Thu 16/10

4:45 p.m.-8:40 p.m.

1 stop12h 55m

C$ 649

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 8/10

7:00 p.m.-3:45 p.m.

1 stop11h 45m

Kastrup Copenhagen

Wed 15/10

2:00 p.m.-5:50 p.m.

1 stop12h 50m

C$ 649

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 8/10

3:45 p.m.-12:55 p.m.

1 stop12h 10m

Kastrup Copenhagen

Tue 14/10

2:00 p.m.-5:50 p.m.

1 stop12h 50m

C$ 649

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 8/10

7:00 p.m.-3:45 p.m.

1 stop11h 45m

Kastrup Copenhagen

Fri 17/10

2:00 p.m.-5:50 p.m.

1 stop12h 50m

C$ 649

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 5/9

9:45 p.m.-6:30 a.m.

1 stop23h 45m

C$ 516

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 18 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 8 August 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, February is the cheapest month in which you can book a flight from Seattle to Copenhagen (average of C$ 591). Flying from Seattle to Copenhagen in July is currently the most expensive (average of C$ 871). 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 15 August 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 7% on flights from Seattle to Copenhagen by exploring options for tickets in the morning.

What’s the top layover airport for flights from Seattle to Copenhagen?

Share of one-stop round-trip flights from Seattle to Copenhagen chosen by Cheapflights users in the past 12 months, using the same layover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 85% of one-stop itineraries from Seattle to Copenhagen on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to Copenhagen?

Average round-trip fare for 1-stop flights from Seattle to Copenhagen, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of C$ 746.

What’s the fastest layover option from Seattle to Copenhagen?

Shortest average travel time for 1-stop one-way flights from Seattle to Copenhagen, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via London (LHR) have the shortest average one-way travel time for 1-stop routes: 13h 30m.

Which airport typically offers the quickest layover for flights from Seattle to Copenhagen?

Average layover duration for 1-stop one-way flights from Seattle to Copenhagen, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via London (LHR) offer the fastest connection on this route, with an average layover time of 4h 09m.

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 15 August 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
1,468 reviews
Check prices

Overall

7.4

Entertainment

6.6

Food

6.6

Crew

8.0

Boarding

7.6

Comfort

7.3

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
1,468 reviews
Scandinavian Airlines
7.4
Good
1,468 reviews
Check prices

Overall

7.4

Entertainment

6.6

Food

6.6

Crew

8.0

Boarding

7.6

Comfort

7.3

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
526 reviews
Scandinavian Airlines
7.4
Good
1,468 reviews
Check prices

Overall

7.4

Entertainment

6.6

Food

6.6

Crew

8.0

Boarding

7.6

Comfort

7.3

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.

  • What airports do I use to fly from Seattle to Copenhagen?

    To fly from Seattle to Copenhagen, you need to book a flight from Seattle/Tacoma Intl (SEA) to Kastrup Copenhagen (CPH). Nonstop flights to Kastrup Copenhagen from Seattle/Tacoma Intl take 9h 30m on average. When it comes time to book airfare, you have a few options: there is 1 outbound flight from Seattle/Tacoma Intl to Kastrup Copenhagen offered by 2 different airlines.

  • 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.

  • 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$ 617. Another option worth looking into is Scandinavian Airlines, starting at C$ 637 round trip. These flights start at 30% lower than the current average price 3 months from now.

  • What are the cheapest flights from Seattle to Copenhagen?

    While on average a flight from Seattle to Copenhagen is generally C$ 2,223, our data shows the cheapest flight currently is C$ 820. When looking at the most popular route, (Seattle/Tacoma Intl - Kastrup Copenhagen), you can expect to pay C$ 729 for that flight.

  • 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, February is the cheapest month in which you can book a flight from Seattle to Copenhagen (average of C$ 591). Flying from Seattle to Copenhagen in July is currently the most expensive (average of C$ 871). 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

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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 15 August 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 617AverageC$ 762FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapestC$ 637AverageC$ 779FlexibilityNo 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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