Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Copenhagen to Seattle from £365

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 12/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Copenhagen to Seattle

Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
12:55 - 17:00
CPH
-
SEA
13h 05m1 stop
Icelandair Logo
15:00 - 19:50
SEA
-
CPH
20h 50m1 stop
£428Icelandair
Wed, 4 Mar - Sun, 8 Mar
Icelandair Logo
12:55 - 17:00
CPH
-
SEA
13h 05m1 stop
Icelandair Logo
15:35 - 19:50
SEA
-
CPH
20h 15m1 stop
£429Icelandair
Wed, 4 Mar - Sun, 8 Mar
British Airways Logo
19:50 - 11:30
CPH
-
SEA
24h 40m1 stop
British Airways Logo
18:50 - 21:45
SEA
-
CPH
17h 55m1 stop
£434British Airways
Thu, 22 Jan - Sun, 15 Feb
Icelandair Logo
12:55 - 17:00
CPH
-
SEA
13h 05m1 stop
Icelandair Logo
14:35 - 11:45
SEA
-
CPH
12h 10m1 stop
£440Icelandair
Thu, 22 Jan - Wed, 11 Feb
Delta Logo
14:15 - 11:50
CPH
-
SEA
30h 35m1 stop
Delta Logo
12:25 - 14:40
SEA
-
CPH
17h 15m2 stops
£446Delta
Mon, 12 Jan - Sun, 25 Jan
Delta Logo
06:00 - 15:00
CPH
-
SEA
18h 00m2 stops
Delta Logo
16:55 - 19:50
SEA
-
CPH
17h 55m1 stop
£452Delta
Thu, 22 Jan - Mon, 16 Feb
United Airlines Logo
07:05 - 12:10
CPH
-
SEA
14h 05m1 stop
United Airlines Logo
07:00 - 14:05
SEA
-
CPH
22h 05m2 stops
£464United Airlines
Thu, 22 Jan - Wed, 11 Feb
United Airlines Logo
07:05 - 12:10
CPH
-
SEA
14h 05m1 stop
United Airlines Logo
05:05 - 23:05
SEA
-
CPH
33h 00m2 stops
£467United Airlines
Thu, 22 Jan - Sun, 15 Feb
United Airlines Logo
10:10 - 22:43
CPH
-
SEA
21h 33m3 stops
United Airlines Logo
10:55 - 14:10
SEA
-
CPH
18h 15m2 stops
£468United Airlines
Thu, 22 Jan - Tue, 17 Feb
United Airlines Logo
10:10 - 22:43
CPH
-
SEA
21h 33m2 stops
United Airlines Logo
23:59 - 23:05
SEA
-
CPH
38h 06m2 stops
£471United Airlines
Thu, 22 Jan - Sat, 14 Feb

Icelandair flights from Copenhagen to Seattle

Our best Icelandair deals on Copenhagen to Seattle flight tickets
Icelandair
4 Mar
CPH12:55Kastrup Copenhagen
13h 05m
1 stop
SEA17:00Seattle/Tacoma Intl
8 Mar
SEA15:00Seattle/Tacoma Intl
20h 50m
1 stop
CPH19:50Kastrup Copenhagen
£428
Find similar
Icelandair
4 Mar
CPH12:55Kastrup Copenhagen
13h 05m
1 stop
SEA17:00Seattle/Tacoma Intl
8 Mar
SEA15:35Seattle/Tacoma Intl
20h 15m
1 stop
CPH19:50Kastrup Copenhagen
£429
Find similar
Icelandair
22 Jan
CPH12:55Kastrup Copenhagen
13h 05m
1 stop
SEA17:00Seattle/Tacoma Intl
11 Feb
SEA14:35Seattle/Tacoma Intl
12h 10m
1 stop
CPH11:45Kastrup Copenhagen
£440
Find similar

British Airways flights from Copenhagen to Seattle

Our best British Airways deals on Copenhagen to Seattle flight tickets
British Airways
22 Jan
CPH19:50Kastrup Copenhagen
24h 40m
1 stop
SEA11:30Seattle/Tacoma Intl
15 Feb
SEA18:50Seattle/Tacoma Intl
17h 55m
1 stop
CPH21:45Kastrup Copenhagen
£434
Find similar
British Airways
22 Jan
CPH10:30Kastrup Copenhagen
20h 37m
2 stops
SEA22:07Seattle/Tacoma Intl
14 Feb
SEA18:50Seattle/Tacoma Intl
19h 35m
1 stop
CPH23:25Kastrup Copenhagen
£467
Find similar
British Airways
22 Jan
CPH12:15Kastrup Copenhagen
13h 40m
1 stop
SEA16:55Seattle/Tacoma Intl
13 Feb
SEA13:35Seattle/Tacoma Intl
20h 35m
1 stop
CPH19:10Kastrup Copenhagen
£607
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Copenhagen to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 18 December 2025.
Use the filters below to find and compare flights from Copenhagen to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 4/3

12:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Sun 8/3

15:00-19:50

1 stop20h 50m

£428

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 4/3

12:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Sun 8/3

15:35-19:50

1 stop20h 15m

£429

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 22/1

19:50-11:30

1 stop24h 40m

Seattle/Tacoma Intl

Sun 15/2

18:50-21:45

1 stop17h 55m

£434

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 22/1

12:55-17:00

1 stop13h 05m

Seattle/Tacoma Intl

Wed 11/2

14:35-11:45

1 stop12h 10m

£440

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 12/1

14:15-11:50

1 stop30h 35m

Seattle/Tacoma Intl

Sun 25/1

12:25-14:40

2 stops17h 15m

£446

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 22/1

06:00-15:00

2 stops18h 00m

Seattle/Tacoma Intl

Mon 16/2

16:55-19:50

1 stop17h 55m

£452

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 22/1

07:05-12:10

1 stop14h 05m

Seattle/Tacoma Intl

Wed 11/2

07:00-14:05

2 stops22h 05m

£464

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 22/1

07:05-12:10

1 stop14h 05m

Seattle/Tacoma Intl

Sun 15/2

05:05-23:05

2 stops33h 00m

£467

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 22/1

10:10-22:43

3 stops21h 33m

Seattle/Tacoma Intl

Tue 17/2

10:55-14:10

2 stops18h 15m

£468

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 22/1

10:10-22:43

2 stops21h 33m

Seattle/Tacoma Intl

Sat 14/2

23:59-23:05

2 stops38h 06m

£471

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

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

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 £344, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Seattle, with average flight prices from Copenhagen averaging around £405.

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 £410. 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 £756.

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 £478 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 £428 on momondo.

How have Copenhagen to Seattle flight prices changed over time?

As of December 2025, prices for Copenhagen to Seattle flights are approximately 38% 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

Fastest flight time

44h 06m

Direct flights

None
The fastest flight from Copenhagen to Seattle takes 44h 06m
There are no direct flights from Copenhagen to Seattle. There are no popular flight routes from Copenhagen to Seattle.
Search flight deals

  • 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 44h 06m.

  • 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?

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Fife
Renton
SeaTac
Tukwila

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.

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 17/1
Sat 24/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States