What is the cheapest airline that flies from Washington to Kastrup Copenhagen?

Icelandair is the most popular carrier operating from Washington to Kastrup Copenhagen

How long does it take to fly to Copenhagen?

On average, it takes 9h 35m to fly from State of Washington to Copenhagen if you fly out of Seattle (the most popular airport in State of Washington) and into Copenhagen (the most popular airport in Copenhagen). If you’re flying out of Spokane and into Copenhagen, then the flight time is around 20h 25m.

What airlines fly to Copenhagen?

Scandinavian Airlines, Icelandair and Delta are the top three most popular airlines that fly to Copenhagen from State of Washington according to our data. Scandinavian Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Copenhagen. Keep in mind that there are 9 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 Washington to Kastrup Copenhagen Airport?

Prices for flights from Washington to Kastrup Copenhagen Airport refresh daily.

How many operators does momondo search for flights from Washington to Kastrup Copenhagen Airport?

As of November 2026, there are 9 operators available to choose from for flights from Washington to Kastrup Copenhagen Airport.

How old do you have to be to fly from Washington to Kastrup Copenhagen Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington 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.

$236 Cheap Flights from Washington to Copenhagen in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Copenhagen

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 pm - 9:45 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

17h 45m1 stop Reykjavik Keflavik Intl

2:00 pm - 5:55 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

12h 55m1 stop Reykjavik Keflavik Intl

$515Icelandair

Wed, Mar 31 - Wed, Apr 7

5:05 am - 5:35 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

27h 30m2 stops Denver Intl Munich Franz Josef Strauss

8:55 am - 1:00 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

13h 05m1 stop Munich Franz Josef Strauss

$515United Airlines

Sun, Dec 6 - Wed, Dec 16

10:10 am - 10:20 amSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

39h 10m2 stops Vancouver Intl Toronto Pearson Intl

1:10 pm - 1:00 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

32h 50m1 stop Munich Franz Josef Strauss

$516Lufthansa

Mon, Nov 30 - Tue, Dec 15

2:50 pm - 5:35 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

17h 45m1 stop Munich Franz Josef Strauss

2:15 pm - 12:00 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

30h 45m1 stop Frankfurt am Main

$516Lufthansa

Fri, Dec 4 - Sun, Dec 6

7:15 pm - 10:50 amSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

30h 35m2 stops Vancouver Intl Toronto Pearson Intl

7:55 pm - 10:29 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

35h 34m2 stops Zurich Chicago O'Hare Intl

$516Multiple Airlines

Mon, May 3 - Mon, May 10

10:10 am - 10:20 amSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

39h 10m2 stops Vancouver Intl Toronto Pearson Intl

9:50 am - 8:55 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

20h 05m2 stops Zurich San Francisco

$516Multiple Airlines

Thu, Feb 11 - Wed, Feb 17

3:40 pm - 4:10 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

15h 30m1 stop Reykjavik Keflavik Intl

5:15 pm - 8:40 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

12h 25m1 stop Reykjavik Keflavik Intl

$516Icelandair

Sun, Apr 11 - Sat, Apr 17

1:50 pm - 1:30 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

14h 40m1 stop Frankfurt am Main

11:35 am - 8:59 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

18h 24m1 stop Toronto Pearson Intl

$516United Airlines

Mon, Nov 30 - Fri, Dec 11

7:45 am - 11:55 amSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

19h 10m2 stops Toronto Pearson Intl Munich Franz Josef Strauss

9:40 am - 8:48 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

20h 08m2 stops Zurich Toronto Pearson Intl

$527Air Canada

Fri, Apr 9 - Sat, Apr 17

7:45 am - 9:00 amSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

41h 15m2 stops Toronto Pearson Intl Zurich

6:50 am - 8:48 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

22h 58m2 stops Brussels Bruxelles-National Toronto Pearson Intl

$530Air Canada

Sun, Mar 21 - Sat, Apr 3

Cheap last minute flights

Enter your travel dates to find the best prices.

7:00 am - 10:20 amSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

18h 20m2 stops Chicago O'Hare Intl Toronto Pearson Intl

7:15 am - 9:50 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

23h 35m2 stops Frankfurt am Main Los Angeles

$519United Airlines

Thu, Nov 12 - Mon, Nov 16

7:00 am - 10:20 amSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

18h 20m2 stops Chicago O'Hare Intl Toronto Pearson Intl

7:15 am - 9:50 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

23h 35m2 stops Frankfurt am Main Los Angeles

$519United Airlines

Thu, Nov 12 - Sat, Nov 21

2:50 pm - 12:25 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

12h 35m1 stop Munich Franz Josef Strauss

6:20 pm - 1:00 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

27h 40m1 stop Munich Franz Josef Strauss

$519Lufthansa

Fri, Nov 13 - Tue, Nov 17

2:50 pm - 12:25 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

12h 35m1 stop Munich Franz Josef Strauss

7:15 am - 12:00 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

13h 45m1 stop Frankfurt am Main

$519United Airlines

Fri, Nov 13 - Thu, Nov 19

2:50 pm - 12:25 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

12h 35m1 stop Munich Franz Josef Strauss

6:20 pm - 1:00 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

27h 40m1 stop Munich Franz Josef Strauss

$520Lufthansa

Fri, Nov 13 - Tue, Nov 17

2:35 pm - 11:45 amSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

12h 10m1 stop Reykjavik Keflavik Intl

5:05 pm - 5:00 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

32h 55m1 stop Reykjavik Keflavik Intl

$521Icelandair

Mon, Nov 16 - Wed, Dec 2

2:50 pm - 6:25 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

18h 35m2 stops Munich Franz Josef Strauss Frankfurt am Main

6:05 am - 6:22 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

21h 17m2 stops Munich Franz Josef Strauss Vancouver Intl

$535Lufthansa

Sun, Nov 15 - Thu, Nov 19

1:50 pm - 1:30 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

14h 40m1 stop Frankfurt am Main

2:15 pm - 12:00 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

30h 45m1 stop Frankfurt am Main

$567Multiple Airlines

Mon, Nov 16 - Wed, Dec 2

3:25 pm - 5:00 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

16h 35m1 stop Paris Charles de Gaulle

6:00 am - 11:50 amCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

14h 50m1 stop Amsterdam Schiphol

$604Delta

Mon, Nov 16 - Wed, Dec 2

8:40 am - 6:15 pmSEA Seattle/Tacoma Intl-CPH Kastrup Copenhagen

24h 35m3 stops Vancouver Intl Munich Franz Josef Strauss Stockholm Arlanda

11:10 pm - 12:00 pmCPH Kastrup Copenhagen-SEA Seattle/Tacoma Intl

21h 50m2 stops Stockholm Arlanda Frankfurt am Main

$745Multiple Airlines

Sun, Nov 15 - Wed, Nov 18

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United Airlines flights from State of Washington to Copenhagen

Our best United Airlines deals on State of Washington to Copenhagen flight tickets

United Airlines

Dec 6

SEA5:05 amSeattle/Tacoma Intl

27h 30m

2 stops

CPH5:35 pmKastrup Copenhagen

Dec 16

CPH8:55 amKastrup Copenhagen

13h 05m

1 stop

SEA1:00 pmSeattle/Tacoma Intl

$515

United Airlines

Nov 30

SEA1:50 pmSeattle/Tacoma Intl

14h 40m

1 stop

CPH1:30 pmKastrup Copenhagen

Dec 5

CPH11:35 amKastrup Copenhagen

18h 24m

1 stop

SEA8:59 pmSeattle/Tacoma Intl

$516

United Airlines

Nov 27

SEA7:00 amSeattle/Tacoma Intl

18h 20m

2 stops

CPH10:20 amKastrup Copenhagen

Dec 7

CPH7:15 amKastrup Copenhagen

23h 43m

2 stops

SEA9:58 pmSeattle/Tacoma Intl

$518

Lufthansa flights from State of Washington to Copenhagen

Our best Lufthansa deals on State of Washington to Copenhagen flight tickets

Lufthansa

Dec 7

SEA1:50 pmSeattle/Tacoma Intl

14h 40m

1 stop

CPH1:30 pmKastrup Copenhagen

Dec 14

CPH7:15 amKastrup Copenhagen

13h 45m

1 stop

SEA12:00 pmSeattle/Tacoma Intl

$517

Lufthansa

Nov 13

SEA2:50 pmSeattle/Tacoma Intl

12h 35m

1 stop

CPH12:25 pmKastrup Copenhagen

Nov 17

CPH6:20 pmKastrup Copenhagen

27h 40m

1 stop

SEA1:00 pmSeattle/Tacoma Intl

$520

Lufthansa

Apr 10

SEA10:10 amSeattle/Tacoma Intl

28h 20m

2 stops

CPH11:30 pmKastrup Copenhagen

Apr 19

CPH8:35 amKastrup Copenhagen

24h 39m

2 stops

SEA12:14 amSeattle/Tacoma Intl

$533

momondo Fare Finder

Use the filters below to find and compare flights from Washington 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

Wed 3/31

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Wed 4/7

2:00 pm-5:55 pm

1 stop12h 55m

$515

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sun 12/6

5:05 am-5:35 pm

2 stops27h 30m

Kastrup Copenhagen

Wed 12/16

8:55 am-1:00 pm

1 stop13h 05m

$515

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Mon 11/30

10:10 am-10:20 am

2 stops39h 10m

Kastrup Copenhagen

Tue 12/15

1:10 pm-1:00 pm

1 stop32h 50m

$516

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Fri 12/4

2:50 pm-5:35 pm

1 stop17h 45m

Kastrup Copenhagen

Sun 12/6

2:15 pm-12:00 pm

1 stop30h 45m

$516

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Mon 5/3

7:15 pm-10:50 am

2 stops30h 35m

Kastrup Copenhagen

Mon 5/10

7:55 pm-10:29 pm

2 stops35h 34m

$516

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Thu 2/11

10:10 am-10:20 am

2 stops39h 10m

Kastrup Copenhagen

Wed 2/17

9:50 am-8:55 pm

2 stops20h 05m

$516

Quickest round-trip

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sun 4/11

3:40 pm-4:10 pm

1 stop15h 30m

Kastrup Copenhagen

Sat 4/17

5:15 pm-8:40 pm

1 stop12h 25m

$516

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Mon 11/30

1:50 pm-1:30 pm

1 stop14h 40m

Kastrup Copenhagen

Fri 12/11

11:35 am-8:59 pm

1 stop18h 24m

$516

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Fri 4/9

7:45 am-11:55 am

2 stops19h 10m

Kastrup Copenhagen

Sat 4/17

9:40 am-8:48 pm

2 stops20h 08m

$527

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sun 3/21

7:45 am-9:00 am

2 stops41h 15m

Kastrup Copenhagen

Sat 4/3

6:50 am-8:48 pm

2 stops22h 58m

$530

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 State of Washington 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

Other information

What is the cheapest month to fly to Copenhagen?

The cheapest month to fly to Copenhagen from State of Washington is in February. Flight prices, which tend to average around $501, 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 $527.

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

The cheapest day to depart from State of Washington to Copenhagen is on a Monday when prices can be found for as low as $728. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Copenhagen for around $845.

What is the cheapest Washington to Kastrup Copenhagen flight route?

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

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

You are more likely to see cheaper flights to Copenhagen from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Copenhagen for around $639 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Copenhagen from State of Washington for as low as $599 on momondo.

What cabin class options are available on State of Washington to Copenhagen flights?

There are 3 cabin classes available to choose from on State of Washington 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 State of Washington to Copenhagen flights?

You could potentially save up to 17% on your flight if you consider stops on a State of Washington to Copenhagen flight.

Cheap State of Washington to Copenhagen flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Copenhagen

Best Price Found	$236
Fastest flight time	9h 35m
Direct flights	None

The best one-way flight to Copenhagen from State of Washington in the past 72 hours is $236. The best round-trip flight deal from State of Washington to Copenhagen found on momondo in the last 72 hours is $515.

The fastest flight from State of Washington to Copenhagen takes 9h 35m

There are no direct flights from State of Washington to Copenhagen. There are no popular flight routes from State of Washington to Copenhagen.

Search flight deals

Frequently asked questions about flying from Washington to Copenhagen

When did momondo last update prices for flights from Washington to Kastrup Copenhagen Airport?
Prices for flights from Washington to Kastrup Copenhagen Airport refresh daily.
How many operators does momondo search for flights from Washington to Kastrup Copenhagen Airport?
As of November 2026, there are 9 operators available to choose from for flights from Washington to Kastrup Copenhagen Airport.
How old do you have to be to fly from Washington to Kastrup Copenhagen Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington 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 State of Washington to Copenhagen?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to Copenhagen is Airbus A350-900, representing 62.45% of all bookings. The subsequent popular models are Airbus A330-900neo at 8.37%, Boeing 787-10 Dreamliner at 6.12%, and Boeing 787-9 Dreamliner at 5.10%.

Best airlines flying from State of Washington to Copenhagen

Compare and see reviews for airlines that fly from State of Washington to Copenhagen with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $439	Free Cancellation	Rating 7.0 766 reviews	Search Icelandair flights
British Airways	PriceFrom $440	Free Cancellation	Rating 6.7 8,278 reviews	Search British Airways flights
Air France	PriceFrom $469	Free Cancellation	Rating 7.5 1,648 reviews	Search Air France flights
Air Canada	PriceFrom $482	Free Cancellation	Rating 7.1 11,891 reviews	Search Air Canada flights
United Airlines	PriceFrom $482	Free Cancellation	Rating 7.3 10,485 reviews	Search United Airlines flights
Scandinavian Airlines	PriceFrom $503	Free Cancellation	Rating 7.5 2,029 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $506	Free Cancellation	Rating 7.8 8,712 reviews	Search Delta flights
Lufthansa	PriceFrom $512	Free Cancellation	Rating 6.8 8,295 reviews	Search Lufthansa flights
KLM	PriceFrom $524	Free Cancellation	Rating 7.8 1,599 reviews	Search KLM flights

Kastrup

Roskilde

Why use momondo?

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

It is quick and easy to find Washington to Copenhagen flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Copenhagen that suits you.

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

Yes. momondo allows you to filter the results for Washington to Copenhagen flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Washington and Copenhagen by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Copenhagen, momondo offers a useful price alert feature which will track prices for flights to Copenhagen from Washington and alert you when they change.

An easier way to manage your Copenhagen trip

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Cheap flights from Washington to Copenhagen from $236

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Copenhagen departing on 2/8. 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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Filter for what you want

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United Airlines flights from State of Washington to Copenhagen

Our best United Airlines deals on State of Washington to Copenhagen flight tickets

Lufthansa flights from State of Washington to Copenhagen

Our best Lufthansa deals on State of Washington to Copenhagen flight tickets

momondo Fare Finder

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

See travel insights to Copenhagen from

How to get the cheapest flight ticket from State of Washington to 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 Washington to Kastrup Copenhagen flight route?

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

What cabin class options are available on State of Washington to Copenhagen flights?

Can stopping save me money on State of Washington to Copenhagen flights?

What is the cheapest airline that flies from Washington to Kastrup Copenhagen?

What airlines fly to Copenhagen?

How long does it take to fly to Copenhagen?

Cheap State of Washington to Copenhagen flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Washington to Copenhagen

Best airlines flying from State of Washington to Copenhagen

Compare and see reviews for airlines that fly from State of Washington 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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