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Cheap flights from Seattle to Copenhagen from C$ 351

SEA — CPH
12 Dec — 19 Dec1
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 10/118:30 a.m. -
3 stops64h 50m
Tue 17/119:50 a.m. -
2 stops22h 17m
Deal found 9/11C$ 733
Mon 30/111:50 p.m. -
1 stop19h 35m
Fri 4/1211:35 a.m. -
1 stop18h 24m
Deal found 8/11C$ 734
Fri 27/117:00 a.m. -
2 stops18h 20m
Mon 7/127:15 a.m. -
2 stops23h 43m
Deal found 11/11C$ 737
Sun 29/112:50 p.m. -
1 stop17h 45m
Mon 7/127:15 a.m. -
1 stop13h 45m
Deal found 8/11C$ 738
Wed 2/122:50 p.m. -
1 stop12h 35m
Sat 12/121:10 p.m. -
1 stop32h 50m
Deal found 11/11C$ 740
Sun 6/122:50 p.m. -
1 stop12h 35m
Mon 14/128:55 a.m. -
2 stops22h 03m
Deal found 9/11C$ 741
Tue 1/129:01 a.m. -
2 stops18h 24m
Wed 16/121:10 p.m. -
2 stops19h 34m
Deal found 9/11C$ 748
Sun 29/112:50 p.m. -
1 stop17h 45m
Thu 3/127:15 a.m. -
2 stops23h 43m
Deal found 11/11C$ 751
Mon 30/111:50 p.m. -
1 stop13h 10m
Sun 6/126:05 a.m. -
1 stop15h 55m
Deal found 11/11C$ 755
Mon 30/111:50 p.m. -
1 stop13h 10m
Wed 16/128:55 a.m. -
1 stop13h 05m
Deal found 9/11C$ 757
Tue 1/127:45 a.m. -
1 stop17h 35m
Tue 15/122:15 p.m. -
1 stop30h 45m
Deal found 9/11C$ 762

Find flight deals from Seattle to Copenhagen

Round-trip from

C$ 733

One-way from

C$ 351

Popular in

December

Cheapest in

February

Average price

C$ 770
United Airlines
  • United Airlines
  • 6/12-16/12
  • 3 total stops
  • 40h 35m total
  • Seattle to Copenhagen
Search Deals
Icelandair
  • Icelandair
  • 29/11-31/12
  • 1 total stop
  • 16h 25m total
  • Seattle to Copenhagen
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2026
Search Deals

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

Tue 8/12

2:35 p.m.-4:00 p.m.

1 stop16h 25m

Kastrup Copenhagen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 368
Quickest round-trip

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Thu 26/11

2:35 p.m.-11:45 a.m.

1 stop12h 10m

Kastrup Copenhagen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 440

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Fri 27/11

2:35 p.m.-7:45 p.m.

1 stop20h 10m

Kastrup Copenhagen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 440

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sun 28/3

4:14 p.m.-8:50 p.m.

2 stops19h 36m

Kastrup Copenhagen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 485

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Tue 1/12

2:35 p.m.-4:00 p.m.

1 stop16h 25m

Kastrup Copenhagen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 592

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sun 13/12

6:45 p.m.-9:55 p.m.

1 stop18h 10m

Kastrup Copenhagen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 697

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sat 12/12

11:25 p.m.-12:25 p.m.

2 stops28h 00m

Kastrup Copenhagen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 724

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sat 20/3

10:45 a.m.-11:10 p.m.

2 stops28h 25m

Kastrup Copenhagen

Sat 27/3

10:35 a.m.-11:21 p.m.

2 stops20h 46m

C$ 734

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sun 27/12

2:50 p.m.-5:35 p.m.

1 stop17h 45m

Kastrup Copenhagen

Sat 9/1

11:35 a.m.-9:02 p.m.

3 stops66h 27m

C$ 734

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Thu 21/1

8:30 a.m.-10:20 a.m.

3 stops40h 50m

Kastrup Copenhagen

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 743

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 23 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 76 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$ 713). Flying from Seattle to Copenhagen in December is currently the most expensive (average of C$ 1,236). 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.

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

Airfare is typical for this route at the moment.

Seattle to Copenhagen flights typically cost between C$ 725 and C$ 915 in December.
The cheapest round-trip price found within the last 5 days was C$ 733 on United Airlines (6 Dec-16 Dec).

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
7.5
Good
2,026 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.8

Entertainment

6.8

Overall

7.5

Comfort

7.4

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
7.5
Good
2,026 reviews
Scandinavian Airlines
7.5
Good
2,026 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.8

Entertainment

6.8

Overall

7.5

Comfort

7.4

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
7.0
Good
766 reviews
Scandinavian Airlines
7.5
Good
2,026 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.8

Entertainment

6.8

Overall

7.5

Comfort

7.4

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
8,295 reviews
Scandinavian Airlines
7.5
Good
2,026 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.8

Entertainment

6.8

Overall

7.5

Comfort

7.4

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$ 734, United Airlines can have you in Copenhagen from Seattle in 28h 25m. There are 7805 km between Seattle and Copenhagen.

  • 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$ 680. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and Lufthansa, with the lowest prices starting at C$ 693 and C$ 730, respectively. These flights start at 25% 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 (74%), Scandinavian Airlines (74%), Delta (74%).

  • 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$ 713). Flying from Seattle to Copenhagen in December is currently the most expensive (average of C$ 1,236). 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
IcelandairCheapestC$ 680AverageC$ 841FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapestC$ 693AverageC$ 1,103FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapestC$ 730AverageC$ 731FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

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

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

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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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