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Cheap flights from Copenhagen to Seattle from £397

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Copenhagen to Seattle departing on 14/9. 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 return flights

United Airlines Logo
06:05 - 18:36CPH-SEA
21h 31m2 stops
United Airlines Logo
07:15 - 07:10SEA-CPH
14h 55m1 stop
£397United Airlines
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Sun, 14 Sep - Sun, 21 Sep
United Airlines Logo
06:05 - 18:36CPH-SEA
21h 31m2 stops
United Airlines Logo
07:15 - 07:10SEA-CPH
14h 55m1 stop
£399United Airlines
Find Deal
Tue, 9 Sep - Sat, 20 Sep
Logo
08:50 - 19:29CPH-SEA
19h 39m2 stops
Logo
19:50 - 17:25SEA-CPH
13h 35m1 stop
£400
Find Deal
Thu, 23 Oct - Mon, 27 Oct
United Airlines Logo
09:35 - 22:59CPH-SEA
22h 24m2 stops
United Airlines Logo
07:15 - 07:10SEA-CPH
14h 55m1 stop
£401United Airlines
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Sat, 30 Aug - Sat, 6 Sep
SWISS Logo
06:40 - 14:50CPH-SEA
17h 10m1 stop
SWISS Logo
16:20 - 14:15SEA-CPH
12h 55m1 stop
£407SWISS
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Sat, 30 Aug - Sat, 6 Sep
Lufthansa Logo
06:10 - 11:55CPH-SEA
14h 45m1 stop
Lufthansa Logo
15:00 - 18:15SEA-CPH
19h 15m1 stop
£407Lufthansa
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Thu, 23 Oct - Mon, 27 Oct
British Airways Logo
07:20 - 20:46CPH-SEA
22h 26m2 stops
British Airways Logo
13:30 - 23:30SEA-CPH
25h 00m1 stop
£408British Airways
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Tue, 7 Oct - Thu, 16 Oct
Lufthansa Logo
06:05 - 18:36CPH-SEA
21h 31m2 stops
Lufthansa Logo
14:20 - 23:30SEA-CPH
24h 10m2 stops
£422Lufthansa
Find Deal
Sun, 14 Sep - Sun, 21 Sep
British Airways Logo
14:00 - 22:26CPH-SEA
17h 26m1 stop
British Airways Logo
13:30 - 09:30SEA-CPH
35h 00m1 stop
£593British Airways
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Fri, 29 Aug - Fri, 12 Sep
SWISS Logo
09:40 - 18:36CPH-SEA
17h 56m2 stops
SWISS Logo
15:19 - 18:35SEA-CPH
18h 16m2 stops
£662SWISS
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Fri, 29 Aug - Fri, 12 Sep

Lufthansa flights from Copenhagen to Seattle

Our best Lufthansa deals on Copenhagen to Seattle flight tickets
Lufthansa
23 Oct
CPH06:10Kastrup Copenhagen
14h 45m
1 stop
SEA11:55Seattle/Tacoma Intl
27 Oct
SEA15:00Seattle/Tacoma Intl
19h 15m
1 stop
CPH18:15Kastrup Copenhagen
£407
Find similar
Lufthansa
14 Sept
CPH06:05Kastrup Copenhagen
21h 31m
2 stops
SEA18:36Seattle/Tacoma Intl
21 Sept
SEA14:20Seattle/Tacoma Intl
24h 10m
2 stops
CPH23:30Kastrup Copenhagen
£422
Find similar
Lufthansa
11 Oct
CPH19:30Kastrup Copenhagen
25h 25m
2 stops
SEA11:55Seattle/Tacoma Intl
15 Oct
SEA18:50Seattle/Tacoma Intl
12h 35m
1 stop
CPH16:25Kastrup Copenhagen
£465
Find similar

British Airways flights from Copenhagen to Seattle

Our best British Airways deals on Copenhagen to Seattle flight tickets
British Airways
7 Oct
CPH07:20Kastrup Copenhagen
22h 26m
2 stops
SEA20:46Seattle/Tacoma Intl
16 Oct
SEA13:30Seattle/Tacoma Intl
25h 00m
1 stop
CPH23:30Kastrup Copenhagen
£408
Find similar
British Airways
29 Aug
CPH14:00Kastrup Copenhagen
17h 26m
1 stop
SEA22:26Seattle/Tacoma Intl
12 Sept
SEA13:30Seattle/Tacoma Intl
35h 00m
1 stop
CPH09:30Kastrup Copenhagen
£593
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 1 August 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

Sun 14/9

06:05-18:36

2 stops21h 31m

Seattle/Tacoma Intl

Sun 21/9

07:15-07:10

1 stop14h 55m

£397

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 9/9

06:05-18:36

2 stops21h 31m

Seattle/Tacoma Intl

Sat 20/9

07:15-07:10

1 stop14h 55m

£399

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 23/10

08:50-19:29

2 stops19h 39m

Seattle/Tacoma Intl

Mon 27/10

19:50-17:25

1 stop13h 35m

£400

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 30/8

09:35-22:59

2 stops22h 24m

Seattle/Tacoma Intl

Sat 6/9

07:15-07:10

1 stop14h 55m

£401

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sat 30/8

06:40-14:50

1 stop17h 10m

Seattle/Tacoma Intl

Sat 6/9

16:20-14:15

1 stop12h 55m

£407

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 23/10

06:10-11:55

1 stop14h 45m

Seattle/Tacoma Intl

Mon 27/10

15:00-18:15

1 stop19h 15m

£407

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Tue 7/10

07:20-20:46

2 stops22h 26m

Seattle/Tacoma Intl

Thu 16/10

13:30-23:30

1 stop25h 00m

£408

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 14/9

06:05-18:36

2 stops21h 31m

Seattle/Tacoma Intl

Sun 21/9

14:20-23:30

2 stops24h 10m

£422

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 29/8

14:00-22:26

1 stop17h 26m

Seattle/Tacoma Intl

Fri 12/9

13:30-09:30

1 stop35h 00m

£593

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 29/8

09:40-18:36

2 stops17h 56m

Seattle/Tacoma Intl

Fri 12/9

15:19-18:35

2 stops18h 16m

£662

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 £345, 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 £370.

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 £414. 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 £764.

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 £462 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 £418 on momondo.

How have Copenhagen to Seattle flight prices changed over time?

As of August 2025, prices for Copenhagen to Seattle flights are approximately 7% 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

Best price found

£629

Fastest flight time

9h 45m

Direct flights

Mon, Thu, Sat and Sun

Airports in Seattle

1 airport
The best one-way flight to Seattle from Copenhagen in the past 72 hours is £629. The best return flight deal from Copenhagen to Seattle found on momondo in the last 72 hours is £397.
The fastest flight from Copenhagen to Seattle takes 9h 45m
Direct flights go from Copenhagen to Seattle on Monday, Thursday, Saturday and Sunday. Airlines offering direct flights are: Delta and Scandinavian Airlines..
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
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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 9h 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.

  • 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
Kent
SeaTac
Fife
Tukwila
Renton

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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