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Cheap flights from Copenhagen to Seattle from £271

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 5/11. 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

Icelandair Logo
14:00 - 17:50CPH-SEA
12h 50m1 stop
Icelandair Logo
19:00 - 15:45SEA-CPH
11h 45m1 stop
£379Icelandair
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Thu, 2 Oct - Mon, 13 Oct
Icelandair Logo
22:35 - 20:40CPH-SEA
31h 05m1 stop
Icelandair Logo
15:45 - 12:55SEA-CPH
12h 10m1 stop
£380Icelandair
Find Deal
Mon, 6 Oct - Sun, 12 Oct
Icelandair Logo
16:45 - 20:40CPH-SEA
12h 55m1 stop
Icelandair Logo
19:00 - 15:45SEA-CPH
11h 45m1 stop
£401Icelandair
Find Deal
Wed, 1 Oct - Mon, 13 Oct
British Airways Logo
20:50 - 11:35CPH-SEA
23h 45m1 stop
British Airways Logo
14:52 - 16:10SEA-CPH
17h 18m2 stops
£408British Airways
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Thu, 23 Oct - Mon, 27 Oct
British Airways Logo
10:35 - 17:55CPH-SEA
15h 20m1 stop
British Airways Logo
10:35 - 13:45SEA-CPH
18h 10m2 stops
£411British Airways
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Fri, 31 Oct - Fri, 7 Nov
Multiple Airlines Logo
17:00 - 11:35CPH-SEA
27h 35m2 stops
Multiple Airlines Logo
19:50 - 19:05SEA-CPH
15h 15m1 stop
£412Multiple Airlines
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Thu, 23 Oct - Mon, 27 Oct
Multiple Airlines Logo
17:00 - 11:35CPH-SEA
27h 35m2 stops
Multiple Airlines Logo
19:50 - 19:05SEA-CPH
15h 15m1 stop
£414Multiple Airlines
Find Deal
Thu, 23 Oct - Mon, 27 Oct
Finnair Logo
17:00 - 11:35CPH-SEA
27h 35m2 stops
Finnair Logo
19:50 - 23:55SEA-CPH
20h 05m2 stops
£417Finnair
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Thu, 23 Oct - Mon, 27 Oct
United Airlines Logo
06:10 - 11:55CPH-SEA
14h 45m1 stop
United Airlines Logo
07:00 - 14:15SEA-CPH
22h 15m2 stops
£438United Airlines
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Wed, 1 Oct - Mon, 13 Oct
United Airlines Logo
06:10 - 11:55CPH-SEA
14h 45m1 stop
United Airlines Logo
08:30 - 18:45SEA-CPH
25h 15m2 stops
£439United Airlines
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Wed, 1 Oct - Sun, 12 Oct

Icelandair flights from Copenhagen to Seattle

Our best Icelandair deals on Copenhagen to Seattle flight tickets
Icelandair
2 Oct
CPH14:00Kastrup Copenhagen
12h 50m
1 stop
SEA17:50Seattle/Tacoma Intl
13 Oct
SEA19:00Seattle/Tacoma Intl
11h 45m
1 stop
CPH15:45Kastrup Copenhagen
£379
Find similar
Icelandair
6 Oct
CPH22:35Kastrup Copenhagen
31h 05m
1 stop
SEA20:40Seattle/Tacoma Intl
12 Oct
SEA15:45Seattle/Tacoma Intl
12h 10m
1 stop
CPH12:55Kastrup Copenhagen
£380
Find similar
Icelandair
25 Sept
CPH16:45Kastrup Copenhagen
12h 55m
1 stop
SEA20:40Seattle/Tacoma Intl
3 Oct
SEA15:45Seattle/Tacoma Intl
12h 10m
1 stop
CPH12:55Kastrup Copenhagen
£383
Find similar

United Airlines flights from Copenhagen to Seattle

Our best United Airlines deals on Copenhagen to Seattle flight tickets
United Airlines
1 Oct
CPH06:10Kastrup Copenhagen
14h 45m
1 stop
SEA11:55Seattle/Tacoma Intl
13 Oct
SEA07:00Seattle/Tacoma Intl
22h 15m
2 stops
CPH14:15Kastrup Copenhagen
£438
Find similar
United Airlines
1 Oct
CPH06:10Kastrup Copenhagen
14h 45m
1 stop
SEA11:55Seattle/Tacoma Intl
12 Oct
SEA08:30Seattle/Tacoma Intl
25h 15m
2 stops
CPH18:45Kastrup Copenhagen
£439
Find similar
United Airlines
1 Oct
CPH06:10Kastrup Copenhagen
14h 45m
1 stop
SEA11:55Seattle/Tacoma Intl
15 Oct
SEA07:30Seattle/Tacoma Intl
18h 20m
1 stop
CPH10:50Kastrup Copenhagen
£441
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 17 September 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

Thu 2/10

14:00-17:50

1 stop12h 50m

Seattle/Tacoma Intl

Mon 13/10

19:00-15:45

1 stop11h 45m

£379

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 6/10

22:35-20:40

1 stop31h 05m

Seattle/Tacoma Intl

Sun 12/10

15:45-12:55

1 stop12h 10m

£380

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 1/10

16:45-20:40

1 stop12h 55m

Seattle/Tacoma Intl

Mon 13/10

19:00-15:45

1 stop11h 45m

£401

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 23/10

20:50-11:35

1 stop23h 45m

Seattle/Tacoma Intl

Mon 27/10

14:52-16:10

2 stops17h 18m

£408

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 31/10

10:35-17:55

1 stop15h 20m

Seattle/Tacoma Intl

Fri 7/11

10:35-13:45

2 stops18h 10m

£411

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 23/10

17:00-11:35

2 stops27h 35m

Seattle/Tacoma Intl

Mon 27/10

19:50-19:05

1 stop15h 15m

£412

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 23/10

17:00-11:35

2 stops27h 35m

Seattle/Tacoma Intl

Mon 27/10

19:50-19:05

1 stop15h 15m

£414

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 23/10

17:00-11:35

2 stops27h 35m

Seattle/Tacoma Intl

Mon 27/10

19:50-23:55

2 stops20h 05m

£417

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 1/10

06:10-11:55

1 stop14h 45m

Seattle/Tacoma Intl

Mon 13/10

07:00-14:15

2 stops22h 15m

£438

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 1/10

06:10-11:55

1 stop14h 45m

Seattle/Tacoma Intl

Sun 12/10

08:30-18:45

2 stops25h 15m

£439

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 £337, 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 £362.

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 £402. 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 £741.

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 £455 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 £423 on momondo.

How have Copenhagen to Seattle flight prices changed over time?

As of September 2025, prices for Copenhagen to Seattle flights are approximately 15% cheaper 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

9h 50m

Direct flights

Mon, Thu and Sat

Airports in Seattle

1 airport
The fastest flight from Copenhagen to Seattle takes 9h 50m
Direct flights go from Copenhagen to Seattle on Monday, Thursday and Saturday. There are no airlines offering direct flights..
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 50m.

  • 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
Tukwila
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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