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

Icelandair is the most popular carrier operating from Seattle/Tacoma Intl to Kastrup Copenhagen

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

Flights via New York (JFK) offer the lowest average round-trip price of $605.

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

Reykjavik (KEF) was the most common stop: 55% of momondo users choosing 1-stop flights on this route connected there.

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

London (LHR) has the shortest average layover time for this route: 1h 35m.

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

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 12h 40m.

What airlines fly to Copenhagen?

Scandinavian Airlines, Icelandair and Delta are the top three most popular airlines that fly to Copenhagen from Seattle according to our data. Scandinavian Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Copenhagen. Keep in mind that there are 10 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 10 operators available for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport as of July 2026.

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.

$184 Cheap Flights from Seattle to Copenhagen in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Copenhagen

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:55 pm - 10:10 am

SEA

CPH

9h 15mnonstop

1:05 pm - 1:45 pm

CPH

SEA

9h 40mnonstop

$492Scandinavian Airlines

Sun, Sep 13 - Tue, Sep 22

3:55 pm - 10:10 am

SEA

CPH

9h 15mnonstop

1:05 pm - 1:45 pm

CPH

SEA

9h 40mnonstop

$492Scandinavian Airlines

Tue, Sep 15 - Tue, Oct 6

6:50 pm - 6:40 pm

SEA

CPH

14h 50m

1 stop

12:15 pm - 2:22 pm

CPH

SEA

35h 07m

2 stops

$496Lufthansa

Tue, Aug 11 - Fri, Aug 21

6:50 pm - 11:30 pm

SEA

CPH

19h 40m

1 stop

11:35 am - 8:59 pm

CPH

SEA

18h 24m

1 stop

$496United Airlines

Sun, Oct 11 - Wed, Nov 25

3:50 pm - 11:10 pm

SEA

CPH

23h 20m

1 stop

11:35 am - 8:59 pm

CPH

SEA

18h 24m

1 stop

$496United Airlines

Sun, Oct 25 - Sun, Nov 1

6:50 pm - 11:30 pm

SEA

CPH

19h 40m

1 stop

12:15 pm - 10:42 pm

CPH

SEA

19h 27m

2 stops

$496Multiple Airlines

Tue, Aug 11 - Fri, Aug 21

7:05 pm - 9:05 am

SEA

CPH

54h 00m

2 stops

8:55 am - 6:22 pm

CPH

SEA

18h 27m

2 stops

$497Air Canada

Thu, Oct 29 - Tue, Nov 3

7:20 pm - 2:10 pm

SEA

CPH

33h 50m

2 stops

11:35 am - 8:59 pm

CPH

SEA

18h 24m

1 stop

$497Air Canada

Sat, Oct 17 - Wed, Nov 11

7:45 am - 10:05 am

SEA

CPH

17h 20m

1 stop

6:05 am - 6:22 pm

CPH

SEA

21h 17m

2 stops

$497Multiple Airlines

Thu, Nov 12 - Thu, Nov 26

6:50 pm - 11:30 pm

SEA

CPH

19h 40m

1 stop

11:35 am - 2:37 pm

CPH

SEA

36h 02m

2 stops

$501Lufthansa

Fri, Oct 23 - Sun, Nov 1

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Scandinavian Airlines flights from Seattle to Copenhagen

Our best Scandinavian Airlines deals on Seattle to Copenhagen flight tickets

Scandinavian Airlines

Sep 15

SEA3:55 pmSeattle/Tacoma Intl

9h 15m

CPH10:10 amKastrup Copenhagen

Oct 6

CPH1:05 pmKastrup Copenhagen

9h 40m

SEA1:45 pmSeattle/Tacoma Intl

$492

Scandinavian Airlines

Sep 15

SEA3:55 pmSeattle/Tacoma Intl

9h 15m

CPH10:10 amKastrup Copenhagen

Sep 22

CPH1:05 pmKastrup Copenhagen

9h 40m

SEA1:45 pmSeattle/Tacoma Intl

$507

Scandinavian Airlines

Sep 27

SEA3:55 pmSeattle/Tacoma Intl

9h 15m

CPH10:10 amKastrup Copenhagen

Oct 2

CPH1:05 pmKastrup Copenhagen

9h 40m

SEA1:45 pmSeattle/Tacoma Intl

$516

United Airlines flights from Seattle to Copenhagen

Our best United Airlines deals on Seattle to Copenhagen flight tickets

United Airlines

Oct 14

SEA11:13 pmSeattle/Tacoma Intl

26h 37m

2 stops

CPH10:50 amKastrup Copenhagen

Nov 13

CPH11:35 amKastrup Copenhagen

20h 24m

2 stops

SEA10:59 pmSeattle/Tacoma Intl

$500

United Airlines

Oct 11

SEA6:50 pmSeattle/Tacoma Intl

19h 40m

1 stop

CPH11:30 pmKastrup Copenhagen

Nov 25

CPH11:35 amKastrup Copenhagen

18h 24m

1 stop

SEA8:59 pmSeattle/Tacoma Intl

$501

United Airlines

Oct 27

SEA7:45 amSeattle/Tacoma Intl

17h 20m

1 stop

CPH9:05 amKastrup Copenhagen

Nov 14

CPH9:50 amKastrup Copenhagen

19h 57m

2 stops

SEA8:47 pmSeattle/Tacoma Intl

$503

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 9/13

3:55 pm-10:10 am

Nonstop9h 15m

Kastrup Copenhagen

Tue 9/22

1:05 pm-1:45 pm

Nonstop9h 40m

$492

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 9/15

3:55 pm-10:10 am

Nonstop9h 15m

Kastrup Copenhagen

Tue 10/6

1:05 pm-1:45 pm

Nonstop9h 40m

$492

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 8/11

6:50 pm-6:40 pm

1 stop14h 50m

Kastrup Copenhagen

Fri 8/21

12:15 pm-2:22 pm

2 stops35h 07m

$496

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 10/11

6:50 pm-11:30 pm

1 stop19h 40m

Kastrup Copenhagen

Wed 11/25

11:35 am-8:59 pm

1 stop18h 24m

$496

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 10/25

3:50 pm-11:10 pm

1 stop23h 20m

Kastrup Copenhagen

Sun 11/1

11:35 am-8:59 pm

1 stop18h 24m

$496

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 8/11

6:50 pm-11:30 pm

1 stop19h 40m

Kastrup Copenhagen

Fri 8/21

12:15 pm-10:42 pm

2 stops19h 27m

$496

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 10/29

7:05 pm-9:05 am

2 stops54h 00m

Kastrup Copenhagen

Tue 11/3

8:55 am-6:22 pm

2 stops18h 27m

$497

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 10/17

7:20 pm-2:10 pm

2 stops33h 50m

Kastrup Copenhagen

Wed 11/11

11:35 am-8:59 pm

1 stop18h 24m

$497

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 11/12

7:45 am-10:05 am

1 stop17h 20m

Kastrup Copenhagen

Thu 11/26

6:05 am-6:22 pm

2 stops21h 17m

$497

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 10/23

6:50 pm-11:30 pm

1 stop19h 40m

Kastrup Copenhagen

Sun 11/1

11:35 am-2:37 pm

2 stops36h 02m

$501

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

What is the typical price of a round-trip flight between Seattle and Copenhagen?

Prices are currently low for flights on this route.

Typical prices usually range from $563 to $836.
The lowest price recently found on this route was $492.

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 $447, 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 April is also cheap. Prices for this month can be found on momondo for an average of $515.

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

The cheapest day to depart from Seattle to Copenhagen is on a Sunday when prices can be found for as low as $744. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Copenhagen for around $829.

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 from Seattle 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 $619 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 $610 on momondo.

What cabin class options are available on Seattle to Copenhagen flights?

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

Can stopping save me money on Seattle to Copenhagen flights?

You could potentially save up to 54% on your flight if you consider stops on a Seattle to Copenhagen flight.

How have Seattle to Copenhagen flight prices changed over time?

As of July 2026, prices for Seattle to Copenhagen flights are approximately 55% 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	$557
Fastest flight time	9h 15m
Direct flights	Mon, Wed, Sat and Sun
Airports in Copenhagen	1 airport

The best one-way flight to Copenhagen from Seattle in the past 72 hours is $557. The best round-trip flight deal from Seattle to Copenhagen found on momondo in the last 72 hours is $639.

The fastest flight from Seattle to Copenhagen takes 9h 15m

Direct flights go from Seattle to Copenhagen on Monday, Wednesday, Saturday and Sunday. There are no airlines offering direct flights.

There is 1 airport in Copenhagen. From Seattle there are direct flights to Kastrup Copenhagen (CPH).

Search flight deals

Frequently asked questions about flying from Seattle to Copenhagen

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 9h 15m.
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 10 operators available for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport as of July 2026.
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 50.98% of all bookings. The subsequent popular models are Airbus A330-900neo at 20.67%, Boeing 787-10 Dreamliner at 7.23%, and Boeing 787-9 Dreamliner at 5.05%.
What is the most popular airline from Seattle to Copenhagen?
Based on momondo bookings for flights between Seattle and Copenhagen, the leading airline is Scandinavian Airlines, making up 39% of the total bookings. Other popular airlines include Icelandair with 33%, Delta with 9%, and Lufthansa with 5%.

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
SWISS	PriceFrom $371	Free Cancellation	Rating 7.5 2,019 reviews	Search SWISS flights
Icelandair	PriceFrom $420	Free Cancellation	Rating 7.0 716 reviews	Search Icelandair flights
Air France	PriceFrom $469	Free Cancellation	Rating 7.5 1,630 reviews	Search Air France flights
Air Canada	PriceFrom $482	Free Cancellation	Rating 7.1 11,413 reviews	Search Air Canada flights
United Airlines	PriceFrom $482	Free Cancellation	Rating 7.4 10,053 reviews	Search United Airlines flights
Scandinavian Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 1,910 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $506	Free Cancellation	Rating 7.8 8,494 reviews	Search Delta flights
British Airways	PriceFrom $506	Free Cancellation	Rating 6.7 8,130 reviews	Search British Airways flights
Lufthansa	PriceFrom $509	Free Cancellation	Rating 6.8 8,167 reviews	Search Lufthansa flights
KLM	PriceFrom $540	Free Cancellation	Rating 7.8 1,551 reviews	Search KLM flights

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 $195

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 8/28. 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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Scandinavian Airlines flights from Seattle to Copenhagen

Our best Scandinavian Airlines deals on Seattle to Copenhagen flight tickets

United Airlines flights from Seattle to Copenhagen

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See travel insights to Copenhagen from

How to get the cheapest flight ticket from Seattle to Copenhagen

What is the typical price of a round-trip flight between Seattle and Copenhagen?

What is the cheapest month to fly to Copenhagen?

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

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

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

What cabin class options are available on Seattle to Copenhagen flights?

Can stopping save me money on Seattle to Copenhagen flights?

How have Seattle to Copenhagen flight prices changed over time?

What is the cheapest airline that flies 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?

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

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

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

When to book flights from Seattle to Copenhagen

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

Best Price Found

Fastest flight time

Direct flights

Airports in Copenhagen

Frequently asked questions about flying 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

Traveling to a place near Copenhagen?

Why use momondo?

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

Fly your favorite airline to Copenhagen

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Copenhagen

List of cabin classes available on flights landing in Copenhagen. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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