What is the cheapest airline that flies from Seattle/Tacoma Intl to Kastrup Copenhagen?

Icelandair, Air Canada, and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Kastrup Copenhagen

How many flights depart from Seattle to Copenhagen on average per week?

As of October 2025, 9 flights take off from Seattle and land in Copenhagen each week. The most common flight departure day for this route is Wed, with 33% of weekly flights taking off on this day.

Which layover airport has the shortest connection time from Seattle to Copenhagen?

Paris (CDG) has the shortest average layover time for this route: 1h 40m.

Which airport is the most popular layover for flights between Seattle and Copenhagen?

Reykjavik (KEF) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Copenhagen?

Flights via San Francisco (SFO) offer the lowest average round-trip price of $580.

How many flights depart from Seattle to Copenhagen on average per day?

1 flights are operational daily from Seattle to Copenhagen as of October 2025. The most popular departure time for this route is 4:00PM, with 100% of flights per day taking off in the afternoon.

Which layover airport has the shortest travel time from Seattle to Copenhagen?

Flights connecting via Munich (MUC) have the shortest average one-way travel time: 12h 30m.

What airlines fly to Copenhagen?

Icelandair, Scandinavian Airlines and British Airways are the top three most popular airlines that fly to Copenhagen from Seattle according to our data. Icelandair is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Copenhagen. Keep in mind that there are 11 different airlines that fly to Copenhagen on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport refresh daily.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport?

There are 11 operators available for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport as of October 2025.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport.

What documentation or ID do you need to fly to Kastrup Copenhagen Airport?

The necessary travel and health documents for your Kastrup Copenhagen Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$280 Cheap Flights from Seattle to Copenhagen in 2025/26

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One-way

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Cheap round-trip flights

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2:35 pm - 11:45 amSEA-CPH

12h 10m1 stop

12:55 pm - 5:00 pmCPH-SEA

13h 05m1 stop

$416Icelandair

Find Deal

Mon, Nov 3 - Wed, Nov 19

2:35 pm - 8:35 pmSEA-CPH

21h 00m1 stop

12:55 pm - 5:00 pmCPH-SEA

13h 05m1 stop

$418Icelandair

Find Deal

Thu, Nov 13 - Fri, Nov 21

2:15 pm - 3:25 pmSEA-CPH

16h 10m1 stop

12:45 pm - 7:00 pmCPH-SEA

15h 15m1 stop

$474Scandinavian Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 13

2:15 pm - 3:25 pmSEA-CPH

16h 10m1 stop

12:45 pm - 7:00 pmCPH-SEA

15h 15m1 stop

$476Scandinavian Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 13

7:50 pm - 11:30 amSEA-CPH

31h 40m1 stop

12:15 pm - 5:55 pmCPH-SEA

13h 40m1 stop

$506British Airways

Find Deal

Sun, Mar 15 - Wed, Mar 25

8:20 pm - 8:55 pmSEA-CPH

15h 35m1 stop

9:45 pm - 11:10 amCPH-SEA

22h 25m1 stop

$507British Airways

Find Deal

Mon, Apr 6 - Mon, Apr 13

10:05 am - 12:00 pmSEA-CPH

16h 55m2 stops

7:05 am - 12:10 pmCPH-SEA

14h 05m1 stop

$510Lufthansa

Find Deal

Thu, Nov 13 - Thu, Nov 20

3:00 pm - 1:35 pmSEA-CPH

14h 35m1 stop

6:50 am - 12:10 pmCPH-SEA

14h 20m1 stop

$525Lufthansa

Find Deal

Tue, Oct 28 - Tue, Nov 4

11:56 am - 1:10 pmSEA-CPH

16h 14m2 stops

6:00 am - 11:45 amCPH-SEA

14h 45m1 stop

$532Delta

Find Deal

Tue, Nov 18 - Wed, Nov 26

1:40 pm - 7:50 pmSEA-CPH

22h 10m2 stops

6:00 am - 12:35 pmCPH-SEA

14h 35m1 stop

$533Delta

Find Deal

Tue, Mar 10 - Fri, Mar 20

Air Canada flights from Seattle to Copenhagen

Our best Air Canada deals on Seattle to Copenhagen flight tickets

Air Canada

Oct 27

SEA8:15 amSeattle/Tacoma Intl

20h 10m

2 stops

CPH12:25 pmKastrup Copenhagen

Nov 11

CPH8:55 amKastrup Copenhagen

22h 11m

2 stops

SEA10:06 pmSeattle/Tacoma Intl

$524

Find similar

Air Canada

Oct 27

SEA8:15 amSeattle/Tacoma Intl

20h 10m

2 stops

CPH12:25 pmKastrup Copenhagen

Nov 11

CPH8:55 amKastrup Copenhagen

22h 11m

2 stops

SEA10:06 pmSeattle/Tacoma Intl

$536

Find similar

Icelandair flights from Seattle to Copenhagen

Our best Icelandair deals on Seattle to Copenhagen flight tickets

Icelandair

Nov 3

SEA2:35 pmSeattle/Tacoma Intl

12h 10m

1 stop

CPH11:45 amKastrup Copenhagen

Nov 19

CPH12:55 pmKastrup Copenhagen

13h 05m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$416

Find similar

Icelandair

Nov 13

SEA2:35 pmSeattle/Tacoma Intl

21h 00m

1 stop

CPH8:35 pmKastrup Copenhagen

Nov 21

CPH12:55 pmKastrup Copenhagen

13h 05m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$418

Find similar

Icelandair

Nov 7

SEA2:35 pmSeattle/Tacoma Intl

12h 10m

1 stop

CPH11:45 amKastrup Copenhagen

Nov 13

CPH1:25 pmKastrup Copenhagen

12h 35m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$419

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 11/3

2:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

Wed 11/19

12:55 pm-5:00 pm

1 stop13h 05m

$416

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 11/13

2:35 pm-8:35 pm

1 stop21h 00m

Kastrup Copenhagen

Fri 11/21

12:55 pm-5:00 pm

1 stop13h 05m

$418

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 12/6

2:15 pm-3:25 pm

1 stop16h 10m

Kastrup Copenhagen

Sat 12/13

12:45 pm-7:00 pm

1 stop15h 15m

$474

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 12/6

2:15 pm-3:25 pm

1 stop16h 10m

Kastrup Copenhagen

Sat 12/13

12:45 pm-7:00 pm

1 stop15h 15m

$476

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 3/15

7:50 pm-11:30 am

1 stop31h 40m

Kastrup Copenhagen

Wed 3/25

12:15 pm-5:55 pm

1 stop13h 40m

$506

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 4/6

8:20 pm-8:55 pm

1 stop15h 35m

Kastrup Copenhagen

Mon 4/13

9:45 pm-11:10 am

1 stop22h 25m

$507

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 11/13

10:05 am-12:00 pm

2 stops16h 55m

Kastrup Copenhagen

Thu 11/20

7:05 am-12:10 pm

1 stop14h 05m

$510

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 10/28

3:00 pm-1:35 pm

1 stop14h 35m

Kastrup Copenhagen

Tue 11/4

6:50 am-12:10 pm

1 stop14h 20m

$525

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 11/18

11:56 am-1:10 pm

2 stops16h 14m

Kastrup Copenhagen

Wed 11/26

6:00 am-11:45 am

1 stop14h 45m

$532

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 3/10

1:40 pm-7:50 pm

2 stops22h 10m

Kastrup Copenhagen

Fri 3/20

6:00 am-12:35 pm

1 stop14h 35m

$533

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Copenhagen

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to Copenhagen?

The cheapest month to fly to Copenhagen from Seattle is in February. Flight prices, which tend to average around $545, are often lower during this time because this is during the off-season. If you aren’t able to travel to Copenhagen during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $565.

What is the cheapest day to depart on your flight to Copenhagen?

The cheapest day to depart from Seattle to Copenhagen is on a Tuesday when prices can be found for as low as $656. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Copenhagen for around $745.

What is the cheapest time of day to depart on your flight to Copenhagen?

Flying to Copenhagen from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $632 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around $782. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Seattle/Tacoma Intl to Kastrup Copenhagen flight route?

Fly from Seattle/Tacoma Intl to Kastrup Copenhagen for the best Seattle/Tacoma Intl - Kastrup Copenhagen flight prices

How far in advance should I book a flight to Copenhagen?

You are more likely to see cheaper flights to Copenhagen from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Copenhagen for around $624 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Copenhagen from Seattle for as low as $575 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Kastrup Copenhagen flights?

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Kastrup Copenhagen flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to Copenhagen flight prices changed over time?

As of October 2025, prices for Seattle to Copenhagen flights are approximately 51% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Copenhagen

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Copenhagen according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Copenhagen (SEA to CPH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Copenhagen

Best Price Found	$399
Direct flights	None

The best one-way flight to Copenhagen from Seattle in the past 72 hours is $399. The best round-trip flight deal from Seattle to Copenhagen found on momondo in the last 72 hours is $526.

There are no direct flights from Seattle to Copenhagen. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Kastrup Copenhagen Airport.

Search flight deals

How far is Seattle/Tacoma Intl to Kastrup Copenhagen by plane?
Kastrup Copenhagen is 4835.0 mi away from Seattle/Tacoma Intl. A reasonable flight in good conditions will take 12h 10m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport refresh daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport?
There are 11 operators available for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport as of October 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport.
What documentation or ID do you need to fly to Kastrup Copenhagen Airport?
The necessary travel and health documents for your Kastrup Copenhagen Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Copenhagen?
momondo data reveals that the most frequently booked plane model on the route from Seattle to Copenhagen is Airbus A350-900, representing 44.75% of all bookings. The subsequent popular models are Airbus A330-300 at 29.63%, Airbus A330-900neo at 6.17%, and Boeing 787-10 Dreamliner at 4.63%.
What is the most popular airline from Seattle to Copenhagen?
Based on momondo bookings for flights between Seattle and Copenhagen, the leading airline is Icelandair, making up 43% of the total bookings. Other popular airlines include Scandinavian Airlines with 38%, British Airways with 5%, and Delta with 4%.

Best airlines flying from Seattle to Copenhagen

Compare and see reviews for airlines that fly from Seattle to Copenhagen with momondo

Airline	Rating	Free Cancellation	Price
Air France	PriceFrom $418	Free Cancellation	Rating 7.4 1,476 reviews	Search Air France flights
Icelandair	PriceFrom $422	Free Cancellation	Rating 7.0 556 reviews	Search Icelandair flights
American Airlines	PriceFrom $492	Free Cancellation	Rating 7.2 11,041 reviews	Search American Airlines flights
Scandinavian Airlines	PriceFrom $496	Free Cancellation	Rating 7.4 1,533 reviews	Search Scandinavian Airlines flights
Finnair	PriceFrom $504	Free Cancellation	Rating 7.6 1,332 reviews	Search Finnair flights
British Airways	PriceFrom $530	Free Cancellation	Rating 6.7 7,456 reviews	Search British Airways flights
Air Canada	PriceFrom $536	Free Cancellation	Rating 7.1 10,304 reviews	Search Air Canada flights
United Airlines	PriceFrom $543	Free Cancellation	Rating 7.4 8,980 reviews	Search United Airlines flights
Delta	PriceFrom $558	Free Cancellation	Rating 7.9 7,980 reviews	Search Delta flights
KLM	PriceFrom $584	Free Cancellation	Rating 7.7 1,404 reviews	Search KLM flights

Delta Flights From Seattle to Copenhagen
Delta operates around 3 flights from Seattle to Copenhagen every week. The average price of these flights found in the last 72 hours has been $780, but momondo users have found Delta deals from Seattle to Copenhagen from as low as $558 round-trip. Delta has been scored 7.9/10 in 7,981 reviews.
Air France Flights From Seattle to Copenhagen
Another popular option for Seattle to Copenhagen flights is Air France (7.4/10, 1,476 ratings). Air France flies from Seattle to Copenhagen around 3 times per week, with deals starting from $418 round-trip and rising to an average price of around $648.

Kastrup

Roskilde

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Copenhagen?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Copenhagen for you.

Can I find flights from Seattle to Copenhagen with flexible booking policies on momondo?

All flight searches from Seattle to Copenhagen on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Copenhagen?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Copenhagen from Seattle.

I’m not ready to book a flight from Seattle to Copenhagen right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Copenhagen from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Copenhagen trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Seattle to Copenhagen from $280

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Copenhagen departing on 11/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air Canada flights from Seattle to Copenhagen

Our best Air Canada deals on Seattle to Copenhagen flight tickets

Icelandair flights from Seattle to Copenhagen

Our best Icelandair deals on Seattle to Copenhagen flight tickets

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

See travel insights to Copenhagen from

How to get the cheapest flight ticket from Seattle to Copenhagen

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Copenhagen?

What is the cheapest day to depart on your flight to Copenhagen?

The cheapest day to depart from Seattle to Copenhagen is on a Tuesday when prices can be found for as low as $656. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Copenhagen for around $745.

What is the cheapest time of day to depart on your flight to Copenhagen?

What is the cheapest Seattle/Tacoma Intl to Kastrup Copenhagen flight route?

Fly from Seattle/Tacoma Intl to Kastrup Copenhagen for the best Seattle/Tacoma Intl - Kastrup Copenhagen flight prices

How far in advance should I book a flight to Copenhagen?

What cabin class options are available on Seattle/Tacoma Intl to Kastrup Copenhagen flights?

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Kastrup Copenhagen flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to Copenhagen flight prices changed over time?

As of October 2025, prices for Seattle to Copenhagen flights are approximately 51% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Kastrup Copenhagen?

Icelandair, Air Canada, and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Kastrup Copenhagen

What airlines fly to Copenhagen?

Which airport is the most popular layover for flights between Seattle and Copenhagen?

Reykjavik (KEF) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Copenhagen?

Flights via San Francisco (SFO) offer the lowest average round-trip price of $580.

Which layover airport has the shortest travel time from Seattle to Copenhagen?

Flights connecting via Munich (MUC) have the shortest average one-way travel time: 12h 30m.

Which layover airport has the shortest connection time from Seattle to Copenhagen?

Paris (CDG) has the shortest average layover time for this route: 1h 40m.

How many flights depart from Seattle to Copenhagen on average per day?

1 flights are operational daily from Seattle to Copenhagen as of October 2025. The most popular departure time for this route is 4:00PM, with 100% of flights per day taking off in the afternoon.

How many flights depart from Seattle to Copenhagen on average per week?

As of October 2025, 9 flights take off from Seattle and land in Copenhagen each week. The most common flight departure day for this route is Wed, with 33% of weekly flights taking off on this day.

When to book flights from Seattle to Copenhagen

Cheap Seattle to Copenhagen (SEA to CPH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Copenhagen

Best Price Found

Direct flights

How far is Seattle/Tacoma Intl to Kastrup Copenhagen by plane?

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport?

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport?

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport?

What documentation or ID do you need to fly to Kastrup Copenhagen Airport?

What is the most popular plane model from Seattle to Copenhagen?

What is the most popular airline from Seattle to Copenhagen?

Best airlines flying from Seattle to Copenhagen

Compare and see reviews for airlines that fly from Seattle to Copenhagen with momondo

Delta Flights From Seattle to Copenhagen

Air France Flights From Seattle to Copenhagen

Traveling to a place near Copenhagen?

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Copenhagen?

Can I find flights from Seattle to Copenhagen with flexible booking policies on momondo?

How can momondo help me find flights from Seattle to Copenhagen?

I’m not ready to book a flight from Seattle to Copenhagen right now. Can momondo alert me if prices change?

An easier way to manage your Copenhagen trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Denmark

Airports servicing Denmark