How often are flights from Copenhagen to Seattle delayed?

Historically, on average around 10% of flights between Copenhagen and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 158 minutes.

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

Reykjavik (KEF) was the most common stop: 53% of momondo users choosing one-stop flights on this route connected there.

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

Icelandair, Turkish Airlines, and Delta are the most popular carriers operating from Kastrup Copenhagen to Seattle/Tacoma Intl

Which airline has the best punctuality record on Copenhagen to Seattle flights?

According to our data, Delta have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

What is the most punctual flight time for Copenhagen to Seattle flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

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

Flights via Helsinki (HEL) offer the lowest average return price of £355.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

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

Helsinki (HEL) has the shortest average stopover time for this route: 1h 48m.

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

Flights connecting via Helsinki (HEL) have the shortest average one-way travel time: 11h 45m.

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

Prices for flights from Kastrup Copenhagen Airport to Seattle/Tacoma Intl Airport were last updated today.

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

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£348 Cheap Flights from Copenhagen to Seattle in 2025/26

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10:20 - 11:35CPH-SEA

34h 15m1 stop

13:35 - 22:50SEA-CPH

24h 15m1 stop

£395British Airways

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Wed, 29 Apr - Sun, 3 May

10:20 - 11:35CPH-SEA

34h 15m1 stop

13:35 - 20:55SEA-CPH

22h 20m1 stop

£397British Airways

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Wed, 29 Apr - Sun, 3 May

14:15 - 11:45CPH-SEA

30h 30m1 stop

16:48 - 19:50SEA-CPH

18h 02m1 stop

£411Delta

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Mon, 17 Nov - Tue, 2 Dec

06:00 - 20:50CPH-SEA

23h 50m2 stops

16:48 - 19:50SEA-CPH

18h 02m1 stop

£412Delta

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Mon, 17 Nov - Tue, 2 Dec

06:00 - 11:45CPH-SEA

14h 45m1 stop

14:05 - 14:40SEA-CPH

15h 35m1 stop

£417Multiple Airlines

Find Deal

Mon, 24 Nov - Mon, 1 Dec

12:55 - 17:00CPH-SEA

13h 05m1 stop

14:35 - 12:30SEA-CPH

12h 55m1 stop

£435Icelandair

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Tue, 25 Nov - Fri, 5 Dec

21:30 - 17:00CPH-SEA

28h 30m1 stop

14:35 - 11:45SEA-CPH

12h 10m1 stop

£436Icelandair

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Sun, 23 Nov - Fri, 5 Dec

06:50 - 12:10CPH-SEA

14h 20m1 stop

07:00 - 13:35SEA-CPH

21h 35m2 stops

£451United Airlines

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Sat, 22 Nov - Wed, 3 Dec

06:50 - 22:45CPH-SEA

24h 55m2 stops

15:10 - 23:05SEA-CPH

22h 55m1 stop

£453United Airlines

Find Deal

Sun, 23 Nov - Wed, 3 Dec

06:50 - 22:06CPH-SEA

24h 16m2 stops

15:10 - 23:05SEA-CPH

22h 55m1 stop

£513Multiple Airlines

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Sat, 29 Nov - Sun, 30 Nov

British Airways flights from Copenhagen to Seattle

Our best British Airways deals on Copenhagen to Seattle flight tickets

British Airways

29 Apr

CPH10:20Kastrup Copenhagen

34h 15m

1 stop

SEA11:35Seattle/Tacoma Intl

3 May

SEA13:35Seattle/Tacoma Intl

24h 15m

1 stop

CPH22:50Kastrup Copenhagen

£395

Find similar

British Airways

29 Apr

CPH10:20Kastrup Copenhagen

34h 15m

1 stop

SEA11:35Seattle/Tacoma Intl

3 May

SEA13:35Seattle/Tacoma Intl

22h 20m

1 stop

CPH20:55Kastrup Copenhagen

£397

Find similar

British Airways

29 Apr

CPH07:20Kastrup Copenhagen

13h 15m

1 stop

SEA11:35Seattle/Tacoma Intl

3 May

SEA13:35Seattle/Tacoma Intl

22h 20m

1 stop

CPH20:55Kastrup Copenhagen

£398

Find similar

United Airlines flights from Copenhagen to Seattle

Our best United Airlines deals on Copenhagen to Seattle flight tickets

United Airlines

22 Nov

CPH06:50Kastrup Copenhagen

14h 20m

1 stop

SEA12:10Seattle/Tacoma Intl

3 Dec

SEA07:00Seattle/Tacoma Intl

21h 35m

2 stops

CPH13:35Kastrup Copenhagen

£451

Find similar

United Airlines

23 Nov

CPH06:50Kastrup Copenhagen

24h 55m

2 stops

SEA22:45Seattle/Tacoma Intl

3 Dec

SEA15:10Seattle/Tacoma Intl

22h 55m

1 stop

CPH23:05Kastrup Copenhagen

£453

Find similar

United Airlines

17 Nov

CPH10:10Kastrup Copenhagen

21h 30m

2 stops

SEA22:40Seattle/Tacoma Intl

2 Dec

SEA14:00Seattle/Tacoma Intl

13h 15m

1 stop

CPH12:15Kastrup Copenhagen

£455

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 29/4

10:20-11:35

1 stop34h 15m

Seattle/Tacoma Intl

Sun 3/5

13:35-22:50

1 stop24h 15m

£395

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 29/4

10:20-11:35

1 stop34h 15m

Seattle/Tacoma Intl

Sun 3/5

13:35-20:55

1 stop22h 20m

£397

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 17/11

14:15-11:45

1 stop30h 30m

Seattle/Tacoma Intl

Tue 2/12

16:48-19:50

1 stop18h 02m

£411

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 17/11

06:00-20:50

2 stops23h 50m

Seattle/Tacoma Intl

Tue 2/12

16:48-19:50

1 stop18h 02m

£412

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 24/11

06:00-11:45

1 stop14h 45m

Seattle/Tacoma Intl

Mon 1/12

14:05-14:40

1 stop15h 35m

£417

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 25/11

12:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Fri 5/12

14:35-12:30

1 stop12h 55m

£435

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 23/11

21:30-17:00

1 stop28h 30m

Seattle/Tacoma Intl

Fri 5/12

14:35-11:45

1 stop12h 10m

£436

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 22/11

06:50-12:10

1 stop14h 20m

Seattle/Tacoma Intl

Wed 3/12

07:00-13:35

2 stops21h 35m

£451

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 23/11

06:50-22:45

2 stops24h 55m

Seattle/Tacoma Intl

Wed 3/12

15:10-23:05

1 stop22h 55m

£453

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 29/11

06:50-22:06

2 stops24h 16m

Seattle/Tacoma Intl

Sun 30/11

15:10-23:05

1 stop22h 55m

£513

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Copenhagen to Seattle

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

Delays

Stopovers

Other information

What is the cheapest month to fly to Seattle?

The cheapest month to fly to Seattle from Copenhagen is in February. Flight prices, which tend to average around £350, are often lower during this time because this is during the off-season. The month of January is another great option to travel to Seattle, with average flight prices from Copenhagen averaging around £377.

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

According to our data, Friday is the cheapest day to fly to Seattle from Copenhagen. The lowest ticket price found for a Friday departure recently was £416. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Monday is £767.

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

You are more likely to see cheaper flights to Seattle from Copenhagen when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around £475 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Copenhagen for as low as £438 on momondo.

How have Copenhagen to Seattle flight prices changed over time?

As of October 2025, prices for Copenhagen to Seattle flights are approximately 5% more expensive when compared to flights at the same time last year.

When to book flights from Copenhagen to Seattle

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

Estimated return price

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

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

Direct flights	None

There are no direct flights from Copenhagen to Seattle. There are no popular flight routes from Copenhagen to Seattle.

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How far is Kastrup Copenhagen to Seattle/Tacoma Intl by plane?
The straight-line distance from Kastrup Copenhagen to Seattle/Tacoma Intl is 4835.0 mi. By plane, this route typically takes 13h 05m.
When did momondo last update prices for flights from Kastrup Copenhagen Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Kastrup Copenhagen Airport to Seattle/Tacoma Intl Airport were last updated today.
How old do you have to be to fly from Kastrup Copenhagen Airport to Seattle/Tacoma Intl 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 Kastrup Copenhagen Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Copenhagen to Seattle?
momondo data reveals that the most frequently booked plane model on the route from Copenhagen to Seattle is Airbus A350-900, representing 61.84% of all bookings. The subsequent popular model is Airbus A330-300 at 38.16%.

Fife

Renton

SeaTac

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Copenhagen to Seattle. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Seattle from Copenhagen which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Seattle from Copenhagen. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

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

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Cheap flights from Copenhagen to Seattle from £379

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Copenhagen to Seattle departing on 15/12. 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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British Airways flights from Copenhagen to Seattle

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Our best United Airlines deals on Copenhagen to Seattle flight tickets

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

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How to get the cheapest flight ticket from Copenhagen to Seattle

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 Seattle?

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

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

How have Copenhagen to Seattle flight prices changed over time?

As of October 2025, prices for Copenhagen to Seattle flights are approximately 5% more expensive when compared to flights at the same time last year.

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

Icelandair, Turkish Airlines, and Delta are the most popular carriers operating from Kastrup Copenhagen to Seattle/Tacoma Intl

How often are flights from Copenhagen to Seattle delayed?

Historically, on average around 10% of flights between Copenhagen and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 158 minutes.

What is the most punctual flight time for Copenhagen to Seattle flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Copenhagen to Seattle flights?

According to our data, Delta have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

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

Reykjavik (KEF) was the most common stop: 53% of momondo users choosing one-stop flights on this route connected there.

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

Flights via Helsinki (HEL) offer the lowest average return price of £355.

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

Flights connecting via Helsinki (HEL) have the shortest average one-way travel time: 11h 45m.

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

Helsinki (HEL) has the shortest average stopover time for this route: 1h 48m.

When to book flights from Copenhagen to Seattle

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

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

Direct flights

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

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

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

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

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

Travelling to a place near Seattle?

Why use momondo?

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

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

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

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

An easier way to manage your Seattle trip

We make it super easy to schedule, organise 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 the United States

Airports servicing Washington