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Cheap flights from Seattle to Copenhagen from C$ 479

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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPH
5 Jul — 12 Jul1
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 30 June 2025.

Round-trip from

C$ 709

One-way from

C$ 479

Popular in

June

Cheapest in

February

Average price

C$ 1,071

Good round-trip deal

C$ 719 or less
United Airlines
  • United Airlines
  • 13/9-26/9
  • 5 total stops
  • 62h 20m total
  • Seattle to Copenhagen
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Delta
  • Delta
  • 28/9
  • 2 total stops
  • 27h 31m total
  • Seattle to Copenhagen
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Highest demand for flights based on searches. 10% potential increase in price (C$ 134 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 25 potential savings vs. average RT price).
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Average for round-trip flights in June 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 30 June 2025.

Sat 13/911:10 p.m.SEA - CPH
2 stops23h 00mUnited Airlines
Fri 26/912:25 p.m.CPH - SEA
3 stops39h 20mUnited Airlines
Deal found 29/6C$ 709
Sat 13/92:55 p.m.SEA - CPH
2 stops31h 15mLufthansa
Thu 25/96:10 a.m.CPH - SEA
2 stops17h 06mLufthansa
Deal found 29/6C$ 729
Tue 22/71:30 p.m.SEA - CPH
1 stop16h 55mBritish Airways
Wed 13/88:00 p.m.CPH - SEA
1 stop24h 35mBritish Airways
Deal found 28/6C$ 732
Tue 7/101:00 p.m.SEA - CPH
2 stops25h 25mSWISS
Thu 16/106:40 a.m.CPH - SEA
2 stops20h 56mSWISS
Deal found 28/6C$ 747
Sun 20/74:00 p.m.SEA - CPH
Nonstop9h 30mScandinavian Airlines
Mon 11/81:05 p.m.CPH - SEA
Nonstop9h 45mScandinavian Airlines
Deal found 28/6C$ 758
Sun 20/711:30 p.m.SEA - CPH
1 stop21h 50mIcelandair
Mon 11/87:20 a.m.CPH - SEA
1 stop13h 05mIcelandair
Deal found 28/6C$ 761
Sun 27/75:35 p.m.SEA - CPH
1 stop32h 05mDelta
Mon 11/89:00 a.m.CPH - SEA
1 stop34h 15mDelta
Deal found 29/6C$ 766
Tue 1/711:50 a.m.SEA - CPH
1 stop13h 15mKLM
Wed 9/77:05 p.m.CPH - SEA
1 stop25h 30mKLM
Deal found 27/6C$ 830

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 30 June 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

Sat 13/9

11:10 p.m.-7:10 a.m.

2 stops23h 00m

Kastrup Copenhagen

Fri 26/9

12:25 p.m.-6:45 p.m.

3 stops39h 20m

C$ 709

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 13/9

2:55 p.m.-7:10 a.m.

2 stops31h 15m

Kastrup Copenhagen

Thu 25/9

6:10 a.m.-2:16 p.m.

2 stops17h 06m

C$ 729

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 22/7

1:30 p.m.-3:25 p.m.

1 stop16h 55m

Kastrup Copenhagen

Wed 13/8

8:00 p.m.-11:35 a.m.

1 stop24h 35m

C$ 732

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 7/10

1:00 p.m.-8:55 a.m.

2 stops34h 55m

Kastrup Copenhagen

Mon 20/10

8:10 p.m.-6:36 p.m.

2 stops31h 26m

C$ 747

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 20/7

4:00 p.m.-10:30 a.m.

Nonstop9h 30m

Kastrup Copenhagen

Mon 11/8

1:05 p.m.-1:50 p.m.

Nonstop9h 45m

C$ 758

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 20/7

11:30 p.m.-6:20 a.m.

1 stop21h 50m

Kastrup Copenhagen

Mon 11/8

7:20 a.m.-11:25 a.m.

1 stop13h 05m

C$ 761

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 27/7

5:35 p.m.-10:40 a.m.

1 stop32h 05m

Kastrup Copenhagen

Mon 11/8

9:00 a.m.-10:15 a.m.

1 stop34h 15m

C$ 766

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 28/9

5:59 p.m.-6:30 a.m.

2 stops27h 31m

C$ 479

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 10/7

11:30 p.m.-6:20 a.m.

1 stop21h 50m

C$ 520

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 6/8

1:32 p.m.-11:30 p.m.

2 stops24h 58m

C$ 525

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/6

Showing 1-10 of 15 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 27 June 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 30 June 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 30 June 2025.
Check out reviews from past customers who have flown with Alaska Airlines,Delta, andSWISS 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.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,969 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
SWISS
7.5
Good
1,653 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,852 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Scandinavian Airlines
7.3
Good
1,413 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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 12h 55m 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 36 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 United Airlines is currently your cheapest option to Copenhagen, with prices starting at C$ 709. Additional round-trip tickets that might be worth considering are offered by Lufthansa and British Airways, with the lowest prices starting at C$ 729 and C$ 732, respectively. These flights start at 19% 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 Delta, with whom users have recently found tickets for as low as C$ 479. However, be on the lookout for offers from Icelandair and British Airways, as they are both options that can get you from Seattle to Copenhagen for a low price.

  • What are the cheapest flights from Seattle to Copenhagen?

    While on average a flight from Seattle to Copenhagen is generally C$ 755, our data shows the cheapest flight currently is C$ 538. When looking at the most popular route, (Seattle/Tacoma Intl - Kastrup Copenhagen), you can expect to pay C$ 624 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 30 June 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 629AverageC$ 761FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Scandinavian AirlinesCheapestC$ 632AverageC$ 773FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights

Fly with Cheapflights

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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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