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Cheap flights from Seattle to Copenhagen from $266

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 3/17. 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

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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
2:35 pm - 5:20 am
SEA
-
CPH
29h 45m
1 stop
Icelandair Logo
12:55 pm - 5:00 pm
CPH
-
SEA
13h 05m
1 stop
$395Icelandair
Mon, Feb 16 - Tue, Mar 3
Icelandair Logo
2:35 pm - 5:20 am
SEA
-
CPH
29h 45m
1 stop
Icelandair Logo
12:55 pm - 5:00 pm
CPH
-
SEA
13h 05m
1 stop
$401Icelandair
Mon, Feb 16 - Wed, Mar 4
Icelandair Logo
2:35 pm - 5:20 am
SEA
-
CPH
29h 45m
1 stop
Icelandair Logo
12:55 pm - 5:00 pm
CPH
-
SEA
13h 05m
1 stop
$420Icelandair
Mon, Feb 16 - Tue, Mar 3
Icelandair Logo
7:00 pm - 12:55 pm
SEA
-
CPH
32h 55m
1 stop
Icelandair Logo
2:00 pm - 8:40 pm
CPH
-
SEA
15h 40m
1 stop
$424Icelandair
Thu, Apr 23 - Tue, Apr 28
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
$425Icelandair
Sun, Apr 12 - Sun, Apr 19
Icelandair Logo
3:40 pm - 3:55 pm
SEA
-
CPH
15h 15m
1 stop
Icelandair Logo
4:55 pm - 8:40 pm
CPH
-
SEA
12h 45m
1 stop
$432Icelandair
Tue, Apr 28 - Sat, May 9
Icelandair Logo
7:00 pm - 11:45 pm
SEA
-
CPH
19h 45m
1 stop
Icelandair Logo
7:20 am - 5:55 pm
CPH
-
SEA
19h 35m
1 stop
$438Icelandair
Fri, May 1 - Wed, May 6
Icelandair Logo
7:00 pm - 11:45 pm
SEA
-
CPH
19h 45m
1 stop
Icelandair Logo
7:20 am - 5:55 pm
CPH
-
SEA
19h 35m
1 stop
$440Icelandair
Fri, May 1 - Wed, May 6
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
$444Icelandair
Sat, May 2 - Mon, May 11
Icelandair Logo
2:35 pm - 11:45 am
SEA
-
CPH
12h 10m
1 stop
Icelandair Logo
12:55 pm - 5:00 pm
CPH
-
SEA
13h 05m
1 stop
$445Icelandair
Wed, Feb 25 - Wed, Mar 4

Icelandair flights from Seattle to Copenhagen

Our best Icelandair deals on Seattle to Copenhagen flight tickets
Icelandair
Feb 16
SEA2:35 pmSeattle/Tacoma Intl
29h 45m
1 stop
CPH5:20 amKastrup Copenhagen
Mar 3
CPH12:55 pmKastrup Copenhagen
13h 05m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$395
Icelandair
Feb 16
SEA2:35 pmSeattle/Tacoma Intl
29h 45m
1 stop
CPH5:20 amKastrup Copenhagen
Mar 3
CPH12:55 pmKastrup Copenhagen
13h 05m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$401
Icelandair
Feb 16
SEA2:35 pmSeattle/Tacoma Intl
29h 45m
1 stop
CPH5:20 amKastrup Copenhagen
Mar 3
CPH12:55 pmKastrup Copenhagen
13h 05m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$420

Lufthansa flights from Seattle to Copenhagen

Our best Lufthansa deals on Seattle to Copenhagen flight tickets
Lufthansa
Apr 8
SEA6:50 pmSeattle/Tacoma Intl
12h 35m
1 stop
CPH4:25 pmKastrup Copenhagen
Apr 10
CPH6:30 amKastrup Copenhagen
14h 50m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$509
Lufthansa
Feb 16
SEA7:00 amSeattle/Tacoma Intl
21h 35m
2 stops
CPH1:35 pmKastrup Copenhagen
Mar 3
CPH10:10 amKastrup Copenhagen
19h 46m
2 stops
SEA8:56 pmSeattle/Tacoma Intl
$511
Lufthansa
Apr 7
SEA2:10 pmSeattle/Tacoma Intl
19h 25m
1 stop
CPH6:35 pmKastrup Copenhagen
Apr 9
CPH5:10 pmKastrup Copenhagen
32h 49m
1 stop
SEA4:59 pmSeattle/Tacoma Intl
$519

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 3, 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

Mon 2/16

2:35 pm-5:20 am

1 stop29h 45m

Kastrup Copenhagen

Tue 3/3

12:55 pm-5:00 pm

1 stop13h 05m

$395

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 2/16

2:35 pm-5:20 am

1 stop29h 45m

Kastrup Copenhagen

Wed 3/4

12:55 pm-5:00 pm

1 stop13h 05m

$401

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 2/16

2:35 pm-5:20 am

1 stop29h 45m

Kastrup Copenhagen

Tue 3/3

12:55 pm-5:00 pm

1 stop13h 05m

$420

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 4/23

7:00 pm-12:55 pm

1 stop32h 55m

Kastrup Copenhagen

Tue 4/28

2:00 pm-8:40 pm

1 stop15h 40m

$424

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 4/12

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Sun 4/19

10:35 pm-8:40 pm

1 stop31h 05m

$425

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 4/28

3:40 pm-3:55 pm

1 stop15h 15m

Kastrup Copenhagen

Sat 5/9

4:55 pm-8:40 pm

1 stop12h 45m

$432

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 5/1

7:00 pm-11:45 pm

1 stop19h 45m

Kastrup Copenhagen

Wed 5/6

7:20 am-5:55 pm

1 stop19h 35m

$438

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 5/1

7:00 pm-11:45 pm

1 stop19h 45m

Kastrup Copenhagen

Wed 5/6

7:20 am-5:55 pm

1 stop19h 35m

$440

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 5/2

7:00 pm-3:55 pm

1 stop11h 55m

Kastrup Copenhagen

Mon 5/11

2:00 pm-5:55 pm

1 stop12h 55m

$444

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 2/25

2:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

Wed 3/4

12:55 pm-5:00 pm

1 stop13h 05m

$445

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 typical price of a round-trip flight between Seattle and Copenhagen?

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 $655. 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 13% 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

$506

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 $506. The best round-trip flight deal from Seattle to Copenhagen found on momondo in the last 72 hours is $552.
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
1,676 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $506Free CancellationRating
6.7
7,712 reviews
Search British Airways flights
DeltaPriceFrom $531Free CancellationRating
7.9
8,138 reviews
Search Delta flights
LufthansaPriceFrom $535Free CancellationRating
6.8
7,758 reviews
Search Lufthansa flights
United AirlinesPriceFrom $535Free CancellationRating
7.4
9,235 reviews
Search United Airlines flights
Air CanadaPriceFrom $536Free CancellationRating
7.1
10,683 reviews
Search Air Canada flights
KLMPriceFrom $540Free CancellationRating
7.7
1,448 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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