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Cheap flights from Seattle to Copenhagen from $269

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Copenhagen departing on 3/10. 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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0 bags

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Find the cheapest flights from Seattle to Copenhagen

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
7:00 pm - 9:45 pm
SEA
-
CPH
17h 45m
1 stop
Icelandair Logo
4:55 pm - 8:40 pm
CPH
-
SEA
12h 45m
1 stop
$389Icelandair
Sun, Mar 29 - Tue, Apr 14
Icelandair Logo
7:00 pm - 9:45 pm
SEA
-
CPH
17h 45m
1 stop
Icelandair Logo
2:00 pm - 8:40 pm
CPH
-
SEA
15h 40m
1 stop
$412Icelandair
Tue, Apr 7 - Mon, Apr 20
Icelandair Logo
3:40 pm - 9:45 pm
SEA
-
CPH
21h 05m
1 stop
Icelandair Logo
4:55 pm - 8:40 pm
CPH
-
SEA
12h 45m
1 stop
$416Icelandair
Wed, Apr 15 - Tue, Apr 21
Icelandair Logo
7:00 pm - 9:45 pm
SEA
-
CPH
17h 45m
1 stop
Icelandair Logo
10:35 pm - 5:55 pm
CPH
-
SEA
28h 20m
1 stop
$419Icelandair
Sun, Mar 29 - Mon, Apr 13
Icelandair Logo
7:00 pm - 9:45 pm
SEA
-
CPH
17h 45m
1 stop
Icelandair Logo
10:35 pm - 5:55 pm
CPH
-
SEA
28h 20m
1 stop
$420Icelandair
Sun, Mar 29 - Mon, Apr 13
Icelandair Logo
7:00 pm - 3:55 pm
SEA
-
CPH
11h 55m
1 stop
Icelandair Logo
2:00 pm - 5:55 pm
CPH
-
SEA
12h 55m
1 stop
$422Icelandair
Sat, Apr 18 - Sat, Apr 25
Icelandair Logo
7:00 pm - 9:45 pm
SEA
-
CPH
17h 45m
1 stop
Icelandair Logo
10:35 pm - 8:40 pm
CPH
-
SEA
31h 05m
1 stop
$424Icelandair
Mon, Mar 30 - Mon, Apr 13
Icelandair Logo
7:00 pm - 3:55 pm
SEA
-
CPH
11h 55m
1 stop
Icelandair Logo
4:55 pm - 8:40 pm
CPH
-
SEA
12h 45m
1 stop
$427Icelandair
Mon, May 4 - Wed, May 13
Icelandair Logo
7:00 pm - 9:45 pm
SEA
-
CPH
17h 45m
1 stop
Icelandair Logo
4:55 pm - 8:40 pm
CPH
-
SEA
12h 45m
1 stop
$430Icelandair
Tue, Apr 28 - Sat, May 9
Icelandair Logo
7:00 pm - 3:55 pm
SEA
-
CPH
11h 55m
1 stop
Icelandair Logo
2:00 pm - 8:40 pm
CPH
-
SEA
15h 40m
1 stop
$434Icelandair
Fri, Apr 24 - Mon, May 11

Icelandair flights from Seattle to Copenhagen

Our best Icelandair deals on Seattle to Copenhagen flight tickets
Icelandair
Mar 29
SEA7:00 pmSeattle/Tacoma Intl
17h 45m
1 stop
CPH9:45 pmKastrup Copenhagen
Apr 14
CPH4:55 pmKastrup Copenhagen
12h 45m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$389
Icelandair
Apr 7
SEA7:00 pmSeattle/Tacoma Intl
17h 45m
1 stop
CPH9:45 pmKastrup Copenhagen
Apr 20
CPH2:00 pmKastrup Copenhagen
15h 40m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$412
Icelandair
Apr 15
SEA3:40 pmSeattle/Tacoma Intl
21h 05m
1 stop
CPH9:45 pmKastrup Copenhagen
Apr 21
CPH4:55 pmKastrup Copenhagen
12h 45m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$416

British Airways flights from Seattle to Copenhagen

Our best British Airways deals on Seattle to Copenhagen flight tickets
British Airways
May 1
SEA1:19 pmSeattle/Tacoma Intl
25h 06m
2 stops
CPH11:25 pmKastrup Copenhagen
May 6
CPH6:45 pmKastrup Copenhagen
25h 50m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$496
British Airways
Apr 7
SEA1:19 pmSeattle/Tacoma Intl
24h 51m
2 stops
CPH11:10 pmKastrup Copenhagen
Apr 20
CPH9:45 pmKastrup Copenhagen
33h 53m
2 stops
SEA10:38 pmSeattle/Tacoma Intl
$507
British Airways
Feb 15
SEA1:44 pmSeattle/Tacoma Intl
20h 46m
2 stops
CPH7:30 pmKastrup Copenhagen
Feb 21
CPH10:35 amKastrup Copenhagen
21h 29m
2 stops
SEA11:04 pmSeattle/Tacoma Intl
$785

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Copenhagen 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 832,500 searches. Data last updated February 8, 2026.
Use the filters below to find and compare flights from Seattle to Copenhagen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 3/29

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Tue 4/14

4:55 pm-8:40 pm

1 stop12h 45m

$389

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 4/7

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Mon 4/20

2:00 pm-8:40 pm

1 stop15h 40m

$412

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 4/15

3:40 pm-9:45 pm

1 stop21h 05m

Kastrup Copenhagen

Tue 4/21

4:55 pm-8:40 pm

1 stop12h 45m

$416

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 3/29

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Mon 4/13

10:35 pm-5:55 pm

1 stop28h 20m

$419

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 3/29

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Mon 4/13

10:35 pm-5:55 pm

1 stop28h 20m

$420

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 4/18

7:00 pm-3:55 pm

1 stop11h 55m

Kastrup Copenhagen

Sat 4/25

2:00 pm-5:55 pm

1 stop12h 55m

$422

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 3/30

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Mon 4/13

10:35 pm-8:40 pm

1 stop31h 05m

$424

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 5/4

7:00 pm-3:55 pm

1 stop11h 55m

Kastrup Copenhagen

Wed 5/13

4:55 pm-8:40 pm

1 stop12h 45m

$427

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 4/28

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Sat 5/9

4:55 pm-8:40 pm

1 stop12h 45m

$430

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 4/24

7:00 pm-3:55 pm

1 stop11h 55m

Kastrup Copenhagen

Mon 5/11

2:00 pm-8:40 pm

1 stop15h 40m

$434

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Copenhagen from

How to get the cheapest flight ticket from Seattle 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?

The cheapest month to fly to Copenhagen from Seattle is in October. Flight prices, which tend to average around $523, 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 October, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $535.

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

The cheapest day to depart from Seattle to Copenhagen is on a Monday when prices can be found for as low as $653. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Copenhagen for around $737.

What is the cheapest Seattle/Tacoma Intl to Kastrup Copenhagen flight route?

Fly from Seattle/Tacoma Intl to Kastrup Copenhagen for the best Seattle/Tacoma Intl - 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 Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Copenhagen for around $617 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Copenhagen from Seattle for as low as $589 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Kastrup Copenhagen flights?

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Kastrup Copenhagen flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to Copenhagen flight prices changed over time?

As of February 2026, prices for Seattle to Copenhagen flights are approximately 19% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Copenhagen

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

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

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

Best Price Found

$459

Fastest flight time

9h 15m

Direct flights

Mon, Wed, Sat and Sun

Airports in Copenhagen

1 airport
The best one-way flight to Copenhagen from Seattle in the past 72 hours is $459. The best round-trip flight deal from Seattle to Copenhagen found on momondo in the last 72 hours is $559.
The fastest flight from Seattle to Copenhagen takes 9h 15m
Direct flights go from Seattle to Copenhagen on Monday, Wednesday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Copenhagen. From Seattle there are direct flights to Kastrup Copenhagen (CPH).
Search flight deals

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

    Kastrup Copenhagen is 4835.0 mi away from Seattle/Tacoma Intl. A reasonable flight in good conditions will take 9h 15m.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport refresh daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Kastrup Copenhagen Airport?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport 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 Seattle to Copenhagen?

  • What is the most popular airline from Seattle to Copenhagen?

Best airlines flying from Seattle to Copenhagen

Compare and see reviews for airlines that fly from Seattle to Copenhagen with momondo
Airline
Rating
Free Cancellation
Price
FinnairPriceFrom $385Free CancellationRating
7.6
1,357 reviews
Search Finnair flights
Air FrancePriceFrom $418Free CancellationRating
7.4
1,531 reviews
Search Air France flights
IcelandairPriceFrom $422Free CancellationRating
7.1
606 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $497Free CancellationRating
7.3
1,678 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $506Free CancellationRating
6.7
7,719 reviews
Search British Airways flights
DeltaPriceFrom $531Free CancellationRating
7.9
8,170 reviews
Search Delta flights
LufthansaPriceFrom $535Free CancellationRating
6.8
7,773 reviews
Search Lufthansa flights
United AirlinesPriceFrom $535Free CancellationRating
7.4
9,251 reviews
Search United Airlines flights
Air CanadaPriceFrom $536Free CancellationRating
7.1
10,697 reviews
Search Air Canada flights
KLMPriceFrom $540Free CancellationRating
7.7
1,450 reviews
Search KLM flights

Traveling to a place near Copenhagen?

Book flights to Copenhagen if you plan to visit one of these locations
Kastrup
Roskilde

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Copenhagen for you.

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

All flight searches from Seattle to Copenhagen on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Copenhagen from Seattle.

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

Yes momondo offers price alerts on flights to Copenhagen from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Copenhagen trip

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