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Cheap flights from Seattle to Copenhagen from $209

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 4/7. 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
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
$406Icelandair
Sun, Apr 12 - Sat, Apr 25
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
$416Icelandair
Thu, Apr 23 - Tue, Apr 28
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
$418Icelandair
Sun, Apr 12 - Sat, Apr 25
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
$420Icelandair
Sun, Apr 12 - Sat, Apr 25
Icelandair Logo
7:00 pm - 9:45 pm
SEA
-
CPH
17h 45m
1 stop
Icelandair Logo
2:00 pm - 5:55 pm
CPH
-
SEA
12h 55m
1 stop
$421Icelandair
Sun, Apr 12 - 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
$422Icelandair
Sun, Apr 12 - Sun, Apr 19
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
$423Icelandair
Sat, Apr 25 - Sat, May 2
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
$424Icelandair
Thu, Apr 23 - Tue, Apr 28
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
$425Icelandair
Sat, Apr 18 - Sat, Apr 25
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
CPH
12h 15m
1 stop
Icelandair Logo
10:35 pm - 5:55 pm
CPH
-
SEA
28h 20m
1 stop
$426Icelandair
Mon, Mar 30 - Mon, Apr 13

Icelandair flights from Seattle to Copenhagen

Our best Icelandair deals on Seattle to Copenhagen flight tickets
Icelandair
Apr 12
SEA7:00 pmSeattle/Tacoma Intl
17h 45m
1 stop
CPH9:45 pmKastrup Copenhagen
Apr 25
CPH4:55 pmKastrup Copenhagen
12h 45m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$406
Icelandair
Apr 23
SEA7:00 pmSeattle/Tacoma Intl
17h 45m
1 stop
CPH9:45 pmKastrup Copenhagen
Apr 28
CPH4:55 pmKastrup Copenhagen
12h 45m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$416
Icelandair
Apr 12
SEA7:00 pmSeattle/Tacoma Intl
17h 45m
1 stop
CPH9:45 pmKastrup Copenhagen
Apr 25
CPH4:55 pmKastrup Copenhagen
12h 45m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$418

Delta flights from Seattle to Copenhagen

Our best Delta deals on Seattle to Copenhagen flight tickets
Delta
Apr 12
SEA9:45 pmSeattle/Tacoma Intl
30h 35m
1 stop
CPH1:20 pmKastrup Copenhagen
Apr 25
CPH9:00 amKastrup Copenhagen
19h 59m
1 stop
SEA7:59 pmSeattle/Tacoma Intl
$463
Delta
Apr 12
SEA9:45 pmSeattle/Tacoma Intl
30h 35m
1 stop
CPH1:20 pmKastrup Copenhagen
Apr 25
CPH9:00 amKastrup Copenhagen
22h 31m
1 stop
SEA10:31 pmSeattle/Tacoma Intl
$466
Delta
Apr 28
SEA6:40 pmSeattle/Tacoma Intl
15h 05m
1 stop
CPH6:45 pmKastrup Copenhagen
May 9
CPH9:00 amKastrup Copenhagen
20h 07m
1 stop
SEA8:07 pmSeattle/Tacoma Intl
$469

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 22, 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 4/12

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Sat 4/25

4:55 pm-8:40 pm

1 stop12h 45m

$406

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 4/23

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Tue 4/28

4:55 pm-8:40 pm

1 stop12h 45m

$416

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 4/12

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Sat 4/25

4:55 pm-8:40 pm

1 stop12h 45m

$418

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 4/12

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Sat 4/25

4:55 pm-8:40 pm

1 stop12h 45m

$420

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 4/12

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Sat 4/25

2:00 pm-5:55 pm

1 stop12h 55m

$421

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

$422

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 4/25

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Sat 5/2

2:00 pm-8:40 pm

1 stop15h 40m

$423

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 4/23

7:00 pm-9:45 pm

1 stop17h 45m

Kastrup Copenhagen

Tue 4/28

2:00 pm-8:40 pm

1 stop15h 40m

$424

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

$425

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 3/30

3:40 pm-12:55 pm

1 stop12h 15m

Kastrup Copenhagen

Mon 4/13

10:35 pm-5:55 pm

1 stop28h 20m

$426

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 cheapest month to fly to Copenhagen?

The cheapest month to fly to Copenhagen from Seattle is in February. Flight prices, which tend to average around $472, 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 February, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $523.

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 $648. 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 $735.

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 $607 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 $616 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.

Can stopping save me money on Seattle to Copenhagen flights?

You could potentially save up to 12% on your flight if you consider stops on a Seattle to Copenhagen flight.

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

$407

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 $407. The best round-trip flight deal from Seattle to Copenhagen found on momondo in the last 72 hours is $627.
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
1,365 reviews
Search Finnair flights
IcelandairPriceFrom $421Free CancellationRating
7.1
617 reviews
Search Icelandair flights
Air FrancePriceFrom $487Free CancellationRating
7.4
1,536 reviews
Search Air France flights
Scandinavian AirlinesPriceFrom $498Free CancellationRating
7.3
1,696 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $506Free CancellationRating
6.7
7,757 reviews
Search British Airways flights
DeltaPriceFrom $523Free CancellationRating
7.9
8,238 reviews
Search Delta flights
United AirlinesPriceFrom $535Free CancellationRating
7.4
9,339 reviews
Search United Airlines flights
Air CanadaPriceFrom $536Free CancellationRating
7.1
10,740 reviews
Search Air Canada flights
KLMPriceFrom $540Free CancellationRating
7.7
1,458 reviews
Search KLM flights
LufthansaPriceFrom $554Free CancellationRating
6.8
7,803 reviews
Search Lufthansa 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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