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Cheap flights from Seattle to Copenhagen from C$ 346

SEA — CPH
2 Oct — 9 Oct1
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

Tue 27/107:45 a.m. -
1 stop17h 20m
Sat 14/117:15 a.m. -
1 stop13h 45m
Deal found 1/9C$ 704
Thu 8/106:40 p.m. -
1 stop15h 05m
Tue 13/109:00 a.m. -
1 stop23h 04m
Deal found 28/8C$ 705
Thu 1/109:50 p.m. -
1 stop14h 45m
Tue 6/109:00 a.m. -
1 stop23h 04m
Deal found 31/8C$ 707
Thu 10/127:45 a.m. -
1 stop17h 35m
Mon 14/128:55 a.m. -
3 stops40h 24m
Deal found 29/8C$ 708
Sun 4/107:15 a.m. -
1 stop14h 30m
Sat 24/108:10 a.m. -
1 stop17h 25m
Deal found 30/8C$ 713
Sun 27/93:55 p.m. -
Nonstop9h 15m
Fri 9/101:05 p.m. -
Nonstop9h 40m
Deal found 1/9C$ 718
Tue 29/93:55 p.m. -
Nonstop9h 15m
Fri 9/101:05 p.m. -
Nonstop9h 40m
Deal found 31/8C$ 719
Wed 14/101:45 p.m. -
1 stop17h 00m
Tue 20/109:00 a.m. -
1 stop23h 04m
Deal found 1/9C$ 720
Fri 9/101:45 p.m. -
1 stop15h 15m
Tue 20/109:00 a.m. -
1 stop23h 04m
Deal found 31/8C$ 722
Tue 27/109:05 a.m. -
3 stops21h 05m
Sat 14/119:50 a.m. -
2 stops19h 57m
Deal found 28/8C$ 723
Sat 7/1111:17 p.m. -
2 stops27h 08m
Sun 15/1111:35 a.m. -
2 stops40h 28m
Deal found 28/8C$ 725
Sat 3/1010:40 p.m. -
1 stop23h 05m
Thu 22/106:00 a.m. -
2 stops19h 55m
Deal found 1/9C$ 726

Find flight deals from Seattle to Copenhagen

Round-trip from

C$ 700

One-way from

C$ 346

Popular in

December

Cheapest in

February

Average price

C$ 825

Good round-trip deal

C$ 968 or less
United Airlines
  • United Airlines
  • 23/2-3/3
  • 4 total stops
  • 38h 14m total
  • Seattle to Copenhagen
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Scandinavian Airlines
  • Scandinavian Airlines
  • 20/9
  • Nonstop
  • 9h 15m total
  • Seattle to Copenhagen
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (C$ 9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 41 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Kastrup Copenhagen.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Copenhagen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Fri 2/10

5:45 p.m.-3:45 p.m.

1 stop13h 00m

Kastrup Copenhagen

Thu 22/10

9:00 a.m.-11:04 p.m.

1 stop23h 04m

C$ 722

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Thu 15/10

5:45 p.m.-6:15 p.m.

1 stop15h 30m

Kastrup Copenhagen

Tue 20/10

9:00 a.m.-8:09 p.m.

1 stop20h 09m

C$ 722

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Thu 18/2

6:50 a.m.-10:20 a.m.

2 stops18h 30m

Kastrup Copenhagen

Tue 23/2

6:55 a.m.-9:56 p.m.

3 stops24h 01m

C$ 726

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Mon 5/10

10:40 p.m.-6:45 a.m.

1 stop23h 05m

Kastrup Copenhagen

Fri 23/10

9:25 a.m.-8:27 p.m.

2 stops20h 02m

C$ 727
Quickest round-trip

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Tue 6/10

6:40 p.m.-5:05 p.m.

1 stop13h 25m

Kastrup Copenhagen

Tue 13/10

11:50 a.m.-10:49 p.m.

2 stops19h 59m

C$ 747

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Fri 9/10

6:40 p.m.-6:45 p.m.

1 stop15h 05m

Kastrup Copenhagen

Wed 14/10

9:25 a.m.-8:27 p.m.

2 stops20h 02m

C$ 748

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Mon 5/10

9:40 a.m.-2:00 p.m.

2 stops19h 20m

Kastrup Copenhagen

Tue 20/10

9:25 a.m.-8:27 p.m.

2 stops20h 02m

C$ 770

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Tue 6/10

11:13 p.m.-10:50 a.m.

2 stops26h 37m

Kastrup Copenhagen

Thu 15/10

12:45 p.m.-4:05 p.m.

2 stops36h 20m

C$ 805

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Wed 30/9

9:50 p.m.-9:35 p.m.

1 stop14h 45m

Kastrup Copenhagen

Wed 7/10

9:00 a.m.-11:04 p.m.

1 stop23h 04m

C$ 829

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Mon 14/12

11:18 a.m.-2:40 p.m.

2 stops18h 22m

Kastrup Copenhagen

Thu 14/1

12:05 p.m.-10:05 p.m.

2 stops19h 00m

C$ 838

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/9

Showing 1-10 of 22 resultsSorted by cheapest first
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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

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?

The best time to book flights from Seattle to Copenhagen is 25 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$ 675). Flying from Seattle to Copenhagen in December is currently the most expensive (average of C$ 1,178). 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?

When flying from Seattle to Copenhagen, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Seattle to Copenhagen?

Airfare is below average for this route at the moment.

Seattle to Copenhagen flights typically cost between C$ 720 and C$ 1,041 in February.
The cheapest round-trip price found within the last 5 days was C$ 700 on United Airlines (23 Feb-3 Mar).

Reviews of airlines servicing Copenhagen

Check out reviews from past customers who have flown with Scandinavian Airlines,Icelandair, andLufthansa 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
1,972 reviews
Check prices

Food

6.8

Crew

8.0

Comfort

7.4

Overall

7.4

Boarding

7.7

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Scandinavian Airlines
7.4
Good
1,972 reviews
Scandinavian Airlines
7.4
Good
1,972 reviews
Check prices

Food

6.8

Crew

8.0

Comfort

7.4

Overall

7.4

Boarding

7.7

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Icelandair
6.9
Okay
738 reviews
Scandinavian Airlines
7.4
Good
1,972 reviews
Check prices

Food

6.8

Crew

8.0

Comfort

7.4

Overall

7.4

Boarding

7.7

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(
Lufthansa
6.8
Okay
8,230 reviews
Scandinavian Airlines
7.4
Good
1,972 reviews
Check prices

Food

6.8

Crew

8.0

Comfort

7.4

Overall

7.4

Boarding

7.7

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

BOS - CPH

I booked sas lodge - but I was unable to use it in Copenhagen because lodge was beyond check point. But SAS website confirmed access:(

Related info for your journey

  • How popular is this Seattle to Copenhagen flight route?

    The Seattle/Tacoma Intl to Kastrup Copenhagen flight path was viewed by 10 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$ 722, Delta can have you in Copenhagen from Seattle in 13h. 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 Scandinavian Airlines is currently your cheapest option to Copenhagen, with prices starting at C$ 604. Additional round-trip tickets that might be worth considering are offered by Icelandair and Lufthansa, with the lowest prices starting at C$ 661 and C$ 712, respectively. These flights start at 30% 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 (73%), Scandinavian Airlines (73%), Delta (73%).

  • What are the cheapest flights from Seattle to Copenhagen?

    While on average a flight from Seattle to Copenhagen is generally C$ 1,023, our data shows the cheapest flight currently is C$ 878. When looking at the most popular route, (Seattle/Tacoma Intl - Kastrup Copenhagen), you can expect to pay C$ 826 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$ 675). Flying from Seattle to Copenhagen in December is currently the most expensive (average of C$ 1,178). 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

Top 3 airlines flying from Seattle to Copenhagen

AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapestC$ 604AverageC$ 1,007FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
IcelandairCheapestC$ 661AverageC$ 815FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapestC$ 712AverageC$ 713FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

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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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