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Cheap flights from Seattle to Copenhagen from C$ 424

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPH
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

C$ 615

One-way from

C$ 424

Popular in

June

Cheapest in

February

Average price

C$ 845

Good round-trip deal

C$ 1,134 or less
Icelandair
  • Icelandair
  • 29/11-18/4
  • 2 total stops
  • 37h 10m total
  • Seattle to Copenhagen
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1/11
  • 1/11
  • 2 total stops
  • 41h 32m total
  • Seattle to Copenhagen
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Highest demand for flights based on searches. 10% potential increase in price (C$ 135 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 26 potential savings vs. average RT price).
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Average for round-trip flights in September 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 17 September 2025.

Sun 23/112:35 p.m.SEA - CPH
1 stop12h 10mIcelandair
Sun 12/45:15 p.m.CPH - SEA
1 stop12h 55mIcelandair
Deal found 16/9C$ 615
Wed 26/112:35 p.m.SEA - CPH
1 stop21h 00mIcelandair
Thu 16/42:00 p.m.CPH - SEA
1 stop16h 10mIcelandair
Deal found 16/9C$ 642
Thu 6/1112:45 p.m.SEA - CPH
1 stop17h 40mScandinavian Airlines
Wed 19/1112:50 p.m.CPH - SEA
2 stops42h 35mScandinavian Airlines
Deal found 16/9C$ 669
Thu 4/1211:15 a.m.SEA - CPH
1 stop14h 10mScandinavian Airlines
Sun 7/1212:50 p.m.CPH - SEA
2 stops42h 31mScandinavian Airlines
Deal found 17/9C$ 691
Sun 23/117:20 a.m.SEA - CPH
1 stop18h 05mScandinavian Airlines
Mon 13/43:25 p.m.CPH - SEA
2 stops39h 51mScandinavian Airlines
Deal found 16/9C$ 695
Tue 2/121:25 p.m.SEA - CPH
1 stop15h 55mBritish Airways
Wed 10/1212:15 p.m.CPH - SEA
2 stops20h 23mBritish Airways
Deal found 16/9C$ 708
Thu 27/112:35 p.m.SEA - CPH
1 stop12h 10mIcelandair
Sun 12/47:20 a.m.CPH - SEA
1 stop22h 50mIcelandair
Deal found 16/9C$ 711
Tue 25/1110:53 a.m.SEA - CPH
2 stops16h 32mUnited Airlines
Wed 3/126:00 a.m.CPH - SEA
1 stop16h 20mUnited Airlines
Deal found 16/9C$ 718
Tue 7/107:19 a.m.SEA - CPH
2 stops17h 51mScandinavian Airlines
Tue 14/108:05 a.m.CPH - SEA
2 stops23h 17mScandinavian Airlines
Deal found 16/9C$ 724
Tue 18/118:36 a.m.SEA - CPH
3 stops20h 34mUnited Airlines
Tue 25/118:55 a.m.CPH - SEA
2 stops18h 30mUnited Airlines
Deal found 17/9C$ 729
Tue 25/112:11 p.m.SEA - CPH
1 stop16h 14mScandinavian Airlines
Tue 2/1212:50 p.m.CPH - SEA
2 stops42h 31mScandinavian Airlines
Deal found 16/9C$ 732
Tue 30/96:00 a.m.SEA - CPH
1 stop18h 55mDelta
Tue 7/109:25 a.m.CPH - SEA
2 stops20h 25mDelta
Deal found 16/9C$ 735

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 17 September 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 25/11

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

1 stop12h 10m

Kastrup Copenhagen

Sun 12/4

5:15 p.m.-9:10 p.m.

1 stop12h 55m

C$ 615

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 12/11

2:35 p.m.-12:00 p.m.

1 stop12h 25m

Kastrup Copenhagen

Sun 16/11

9:30 p.m.-5:00 p.m.

1 stop28h 30m

C$ 615

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 3/3

2:35 p.m.-8:20 p.m.

1 stop20h 45m

Kastrup Copenhagen

Thu 12/3

12:55 p.m.-6:00 p.m.

1 stop13h 05m

C$ 615

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 2/3

2:35 p.m.-7:50 p.m.

1 stop20h 15m

Kastrup Copenhagen

Tue 10/3

12:55 p.m.-6:00 p.m.

1 stop13h 05m

C$ 615

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 22/1

2:35 p.m.-7:50 p.m.

1 stop20h 15m

Kastrup Copenhagen

Mon 26/1

12:55 p.m.-5:00 p.m.

1 stop13h 05m

C$ 615

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 24/1

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

1 stop12h 10m

Kastrup Copenhagen

Thu 29/1

12:55 p.m.-5:00 p.m.

1 stop13h 05m

C$ 615

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 24/1

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

1 stop12h 10m

Kastrup Copenhagen

Fri 30/1

12:55 p.m.-5:00 p.m.

1 stop13h 05m

C$ 615

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 29/11

2:35 p.m.-8:35 p.m.

1 stop21h 00m

Kastrup Copenhagen

Mon 13/4

2:00 p.m.-9:10 p.m.

1 stop16h 10m

C$ 615

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 23/11

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

1 stop12h 10m

Kastrup Copenhagen

Wed 15/4

5:15 p.m.-9:10 p.m.

1 stop12h 55m

C$ 615

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 15/2

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

1 stop12h 10m

Kastrup Copenhagen

Sun 22/2

8:50 p.m.-5:00 p.m.

1 stop29h 10m

C$ 618

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/9

Showing 1-10 of 22 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 12 September 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 17 September 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.

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 17 September 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
1,486 reviews
Check prices

Boarding

7.6

Comfort

7.3

Crew

8.0

Entertainment

6.6

Food

6.7

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
1,486 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews
Check prices

Boarding

7.6

Comfort

7.3

Crew

8.0

Entertainment

6.6

Food

6.7

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
545 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews
Check prices

Boarding

7.6

Comfort

7.3

Crew

8.0

Entertainment

6.6

Food

6.7

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$ 615, Icelandair can have you in Copenhagen from Seattle in 20h 15m. 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$ 616. Another option worth looking into is Scandinavian Airlines, starting at C$ 670 round trip. These flights start at 29% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as C$ 564. However, be on the lookout for offers from Virgin Atlantic and Delta, as they are both options that can get you from Seattle to Copenhagen for a low price.

  • 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 (100%), Scandinavian Airlines (79%), Delta (79%).

  • What are the cheapest flights from Seattle to Copenhagen?

    While on average a flight from Seattle to Copenhagen is generally C$ 1,203, our data shows the cheapest flight currently is C$ 741. When looking at the most popular route, (Seattle/Tacoma Intl - Kastrup Copenhagen), you can expect to pay C$ 728 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

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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 616AverageC$ 760FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapestC$ 670AverageC$ 777FlexibilityNo 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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