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

Delta, Icelandair, and Lufthansa are the most popular carriers operating from Washington to Kastrup Copenhagen

How long does it take to fly to Copenhagen?

On average, it takes 9h 30m 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 21h 35m.

What airlines fly to Copenhagen?

Icelandair, Scandinavian Airlines and Delta are the top three most popular airlines that fly to Copenhagen from State of Washington according to our data. Icelandair is the first choice among our users, with 46% 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.

How many flights depart from State of Washington to Copenhagen on average per week?

9 flights are operational weekly from State of Washington to Copenhagen as of October 2025. The most popular departure day for this route is Wed, with 33% of flights per week taking off on this day.

How many flights depart from State of Washington to Copenhagen on average per day?

1 flights are operational daily from State of Washington 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.

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 October 2025, there are 11 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.

$314 Cheap Flights from Washington to Copenhagen in 2025/26

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:00 pm - 11:45 amSEA-CPH

12h 45m1 stop

6:25 am - 6:00 pmCPH-SEA

19h 35m1 stop

$421Icelandair

Find Deal

Sun, Mar 8 - Sun, Mar 15

2:35 pm - 12:00 pmSEA-CPH

12h 25m1 stop

1:05 pm - 5:00 pmCPH-SEA

12h 55m1 stop

$422Icelandair

Find Deal

Sun, Nov 16 - Fri, Nov 21

2:00 pm - 3:25 pmSEA-CPH

17h 25m1 stop

12:55 pm - 10:16 pmCPH-SEA

17h 21m1 stop

$464Scandinavian Airlines

Find Deal

Wed, Mar 18 - Wed, Mar 25

12:40 pm - 3:25 pmSEA-CPH

17h 45m1 stop

2:20 pm - 10:59 pmCPH-SEA

17h 39m1 stop

$475Scandinavian Airlines

Find Deal

Sun, Nov 16 - Sat, Nov 22

1:20 pm - 11:05 pmSEA-CPH

24h 45m2 stops

2:55 pm - 11:44 pmCPH-SEA

41h 49m2 stops

$511SWISS

Find Deal

Thu, Nov 6 - Mon, Nov 10

8:10 am - 2:05 pmSEA-CPH

20h 55m2 stops

10:05 am - 10:16 pmCPH-SEA

21h 11m2 stops

$526Multiple Airlines

Find Deal

Wed, Nov 5 - Wed, Nov 12

4:48 pm - 7:50 pmSEA-CPH

18h 02m1 stop

6:00 am - 11:45 amCPH-SEA

14h 45m1 stop

$529Delta

Find Deal

Wed, Nov 5 - Fri, Nov 14

10:53 am - 7:05 pmSEA-CPH

23h 12m2 stops

6:50 am - 10:28 pmCPH-SEA

24h 38m2 stops

$535SWISS

Find Deal

Tue, Nov 4 - Wed, Nov 12

2:05 pm - 1:00 pmSEA-CPH

13h 55m1 stop

6:45 am - 1:20 pmCPH-SEA

15h 35m1 stop

$537Delta

Find Deal

Wed, Nov 5 - Mon, Nov 10

7:00 pm - 5:35 pmPDX-CPH

37h 35m2 stops

10:10 am - 9:15 amCPH-PDX

32h 05m3 stops

$583Multiple Airlines

Find Deal

Thu, Dec 4 - Fri, Dec 12

Lufthansa flights from State of Washington to Copenhagen

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

Lufthansa

Oct 13

SEA1:12 pmSeattle/Tacoma Intl

18h 13m

2 stops

CPH4:25 pmKastrup Copenhagen

Oct 28

CPH6:50 amKastrup Copenhagen

14h 20m

1 stop

SEA1:10 pmSeattle/Tacoma Intl

$539

Find similar

Lufthansa

Nov 26

SEA3:10 pmSeattle/Tacoma Intl

17h 25m

1 stop

CPH5:35 pmKastrup Copenhagen

Apr 15

CPH6:00 amKastrup Copenhagen

21h 59m

2 stops

SEA6:59 pmSeattle/Tacoma Intl

$542

Find similar

Lufthansa

Oct 13

SEA1:12 pmSeattle/Tacoma Intl

18h 13m

2 stops

CPH4:25 pmKastrup Copenhagen

Nov 7

CPH6:50 amKastrup Copenhagen

14h 20m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

$567

Find similar

United Airlines flights from State of Washington to Copenhagen

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

United Airlines

Nov 4

SEA12:41 pmSeattle/Tacoma Intl

19h 54m

2 stops

CPH5:35 pmKastrup Copenhagen

Nov 14

CPH6:50 amKastrup Copenhagen

14h 20m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

$539

Find similar

United Airlines

Dec 10

SEA7:00 amSeattle/Tacoma Intl

25h 35m

2 stops

CPH5:35 pmKastrup Copenhagen

Dec 17

CPH1:10 pmKastrup Copenhagen

20h 49m

2 stops

SEA12:59 amSeattle/Tacoma Intl

$551

Find similar

United Airlines

Nov 2

SEA3:10 pmSeattle/Tacoma Intl

22h 55m

1 stop

CPH11:05 pmKastrup Copenhagen

Nov 14

CPH6:50 amKastrup Copenhagen

14h 20m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

$557

Find similar

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

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 3/8

3:00 pm-11:45 am

1 stop12h 45m

Kastrup Copenhagen

Sun 3/15

6:25 am-6:00 pm

1 stop19h 35m

$421

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 11/16

2:35 pm-12:00 pm

1 stop12h 25m

Kastrup Copenhagen

Fri 11/21

1:05 pm-5:00 pm

1 stop12h 55m

$422

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 3/18

2:00 pm-3:25 pm

1 stop17h 25m

Kastrup Copenhagen

Wed 3/25

12:55 pm-10:16 pm

1 stop17h 21m

$464

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 11/16

12:40 pm-3:25 pm

1 stop17h 45m

Kastrup Copenhagen

Sat 11/22

2:20 pm-10:59 pm

1 stop17h 39m

$475

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 11/6

1:20 pm-11:05 pm

2 stops24h 45m

Kastrup Copenhagen

Mon 11/10

2:55 pm-11:44 pm

2 stops41h 49m

$511

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 11/5

8:10 am-2:05 pm

2 stops20h 55m

Kastrup Copenhagen

Wed 11/12

10:05 am-10:16 pm

2 stops21h 11m

$526

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 11/5

4:48 pm-7:50 pm

1 stop18h 02m

Kastrup Copenhagen

Fri 11/14

6:00 am-11:45 am

1 stop14h 45m

$529

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 11/4

10:53 am-7:05 pm

2 stops23h 12m

Kastrup Copenhagen

Wed 11/12

6:50 am-10:28 pm

2 stops24h 38m

$535

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 11/5

2:05 pm-1:00 pm

1 stop13h 55m

Kastrup Copenhagen

Mon 11/10

6:45 am-1:20 pm

1 stop15h 35m

$537

PortlandCopenhagen

PDX - CPH

PDXCPH

Portland

Thu 12/4

7:00 pm-5:35 pm

2 stops37h 35m

Kastrup Copenhagen

Fri 12/12

10:10 am-9:15 am

3 stops32h 05m

$583

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 $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 State of Washington to Copenhagen is on a Monday when prices can be found for as low as $668. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Copenhagen for around $745.

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

Flying to Copenhagen from State of Washington 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 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 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 $622 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 $576 on momondo.

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

There are 3 cabin classes available to choose from on Washington to Kastrup 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 50% 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	$388
Fastest flight time	9h 30m
Direct flights	Thu
Airports in Copenhagen	1 airport

The best one-way flight to Copenhagen from State of Washington in the past 72 hours is $388. The best round-trip flight deal from State of Washington to Copenhagen found on momondo in the last 72 hours is $543.

The fastest flight from State of Washington to Copenhagen takes 9h 30m

Direct flights go from State of Washington to Copenhagen on Thursday. There are no airlines offering direct flights.

There is 1 airport near Copenhagen: Kastrup Copenhagen (CPH)

Search flight deals

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 October 2025, there are 11 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 44.88% of all bookings. The subsequent popular models are Airbus A330-300 at 31.02%, Airbus A330-900neo at 5.72%, and Boeing 787-10 Dreamliner at 3.92%.

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
Air France	PriceFrom $418	Free Cancellation	Rating 7.4 1,467 reviews	Search Air France flights
Icelandair	PriceFrom $422	Free Cancellation	Rating 7.0 551 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 1,529 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 7,443 reviews	Search British Airways flights
Air Canada	PriceFrom $536	Free Cancellation	Rating 7.1 10,257 reviews	Search Air Canada flights
United Airlines	PriceFrom $543	Free Cancellation	Rating 7.4 8,965 reviews	Search United Airlines flights
Delta	PriceFrom $558	Free Cancellation	Rating 7.9 7,968 reviews	Search Delta flights
KLM	PriceFrom $584	Free Cancellation	Rating 7.7 1,396 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.

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Cheap flights from Washington to Copenhagen from $314

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 1/8. 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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Cheap round-trip flights

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Lufthansa flights from State of Washington to Copenhagen

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

United Airlines flights from State of Washington to Copenhagen

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

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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

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 State of Washington to Copenhagen is on a Monday when prices can be found for as low as $668. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Copenhagen for around $745.

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

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 to Copenhagen?

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

There are 3 cabin classes available to choose from on Washington to Kastrup 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 50% on your flight if you consider stops on a State of Washington to Copenhagen flight.

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

Delta, Icelandair, and Lufthansa are the most popular carriers operating from Washington to Kastrup Copenhagen

What airlines fly to Copenhagen?

How many flights depart from State of Washington to Copenhagen on average per day?

1 flights are operational daily from State of Washington 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 State of Washington to Copenhagen on average per week?

9 flights are operational weekly from State of Washington to Copenhagen as of October 2025. The most popular departure day for this route is Wed, with 33% of flights per week taking off on this day.

How long does it take to fly to Copenhagen?

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

Fastest flight time

Direct flights

Airports in Copenhagen

When did momondo last update prices for flights from Washington to Kastrup Copenhagen Airport?

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

How old do you have to be to fly from Washington 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 State of 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?

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

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

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

I’m not ready to book a flight from Washington 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