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Cheap flights from Seattle to Copenhagen from $328

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 2/8. 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
3:35 pm - 11:45 am
SEA
-
CPH
12h 10m1 stop
Icelandair Logo
2:00 pm - 8:40 pm
CPH
-
SEA
15h 40m1 stop
$502Icelandair
Wed, Mar 18 - Thu, Apr 2
British Airways Logo
7:15 am - 7:00 pm
SEA
-
CPH
27h 45m2 stops
British Airways Logo
9:45 pm - 11:35 am
CPH
-
SEA
22h 50m1 stop
$503British Airways
Tue, Mar 17 - Tue, Mar 31
British Airways Logo
6:50 pm - 9:45 pm
SEA
-
CPH
17h 55m1 stop
British Airways Logo
6:55 am - 4:55 pm
CPH
-
SEA
19h 00m1 stop
$505British Airways
Mon, Feb 23 - Wed, Mar 4
British Airways Logo
1:39 pm - 4:10 pm
SEA
-
CPH
17h 31m2 stops
British Airways Logo
12:15 pm - 11:07 pm
CPH
-
SEA
19h 52m2 stops
$506British Airways
Mon, Feb 23 - Wed, Mar 4
British Airways Logo
1:37 pm - 7:00 pm
SEA
-
CPH
21h 23m2 stops
British Airways Logo
7:20 am - 9:24 pm
CPH
-
SEA
23h 04m2 stops
$507British Airways
Tue, Mar 17 - Tue, Mar 31
Icelandair Logo
3:40 pm - 9:45 pm
SEA
-
CPH
21h 05m1 stop
Icelandair Logo
5:15 pm - 8:40 pm
CPH
-
SEA
12h 25m1 stop
$511Icelandair
Sun, Apr 19 - Thu, Apr 23
Finnair Logo
7:50 pm - 11:55 pm
SEA
-
CPH
20h 05m2 stops
Finnair Logo
8:40 am - 9:16 pm
CPH
-
SEA
20h 36m2 stops
$514Finnair
Wed, Mar 18 - Wed, Mar 25
Lufthansa Logo
3:40 pm - 6:40 pm
SEA
-
CPH
18h 00m2 stops
Lufthansa Logo
6:40 am - 12:20 pm
CPH
-
SEA
14h 40m1 stop
$515Lufthansa
Fri, Apr 24 - Wed, Apr 29
Lufthansa Logo
10:05 am - 11:05 pm
SEA
-
CPH
28h 00m2 stops
Lufthansa Logo
8:55 am - 2:20 pm
CPH
-
SEA
13h 25m1 stop
$516Lufthansa
Fri, Mar 6 - Wed, Mar 11
Lufthansa Logo
10:05 am - 11:05 pm
SEA
-
CPH
29h 00m2 stops
Lufthansa Logo
6:00 am - 2:20 pm
CPH
-
SEA
16h 20m1 stop
$517Lufthansa
Sun, Mar 22 - Fri, Mar 27

United Airlines flights from Seattle to Copenhagen

Our best United Airlines deals on Seattle to Copenhagen flight tickets
United Airlines
Apr 20
SEA11:59 pmSeattle/Tacoma Intl
25h 51m
2 stops
CPH10:50 amKastrup Copenhagen
Apr 30
CPH6:10 amKastrup Copenhagen
15h 10m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$525
Find similar
United Airlines
Apr 22
SEA8:55 amSeattle/Tacoma Intl
24h 45m
2 stops
CPH6:40 pmKastrup Copenhagen
May 2
CPH12:45 pmKastrup Copenhagen
39h 15m
2 stops
SEA7:00 pmSeattle/Tacoma Intl
$530
Find similar
United Airlines
Apr 21
SEA7:00 amSeattle/Tacoma Intl
18h 50m
2 stops
CPH10:50 amKastrup Copenhagen
May 1
CPH6:30 amKastrup Copenhagen
22h 15m
2 stops
SEA7:45 pmSeattle/Tacoma Intl
$535
Find similar

Air Canada flights from Seattle to Copenhagen

Our best Air Canada deals on Seattle to Copenhagen flight tickets
Air Canada
Apr 24
SEA8:00 pmSeattle/Tacoma Intl
29h 50m
2 stops
CPH10:50 amKastrup Copenhagen
Apr 29
CPH12:45 pmKastrup Copenhagen
18h 06m
1 stop
SEA9:51 pmSeattle/Tacoma Intl
$520
Find similar
Air Canada
Mar 18
SEA8:10 amSeattle/Tacoma Intl
21h 55m
2 stops
CPH2:05 pmKastrup Copenhagen
Mar 31
CPH12:45 pmKastrup Copenhagen
29h 48m
2 stops
SEA9:33 amSeattle/Tacoma Intl
$523
Find similar
Air Canada
Mar 19
SEA8:10 amSeattle/Tacoma Intl
20h 15m
2 stops
CPH12:25 pmKastrup Copenhagen
Mar 31
CPH12:45 pmKastrup Copenhagen
18h 06m
1 stop
SEA9:51 pmSeattle/Tacoma Intl
$528
Find similar

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 December 18, 2025.
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

Wed 3/18

3:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

Thu 4/2

2:00 pm-8:40 pm

1 stop15h 40m

$502

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 3/17

7:15 am-7:00 pm

2 stops27h 45m

Kastrup Copenhagen

Tue 3/31

9:45 pm-11:35 am

1 stop22h 50m

$503

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 2/23

6:50 pm-9:45 pm

1 stop17h 55m

Kastrup Copenhagen

Wed 3/4

6:55 am-4:55 pm

1 stop19h 00m

$505

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 2/23

1:39 pm-4:10 pm

2 stops17h 31m

Kastrup Copenhagen

Wed 3/4

12:15 pm-11:07 pm

2 stops19h 52m

$506

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 3/17

1:37 pm-7:00 pm

2 stops21h 23m

Kastrup Copenhagen

Tue 3/31

7:20 am-9:24 pm

2 stops23h 04m

$507

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 4/19

3:40 pm-9:45 pm

1 stop21h 05m

Kastrup Copenhagen

Thu 4/23

5:15 pm-8:40 pm

1 stop12h 25m

$511

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 3/18

7:50 pm-11:55 pm

2 stops20h 05m

Kastrup Copenhagen

Wed 3/25

8:40 am-9:16 pm

2 stops20h 36m

$514

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 4/24

3:40 pm-6:40 pm

2 stops18h 00m

Kastrup Copenhagen

Wed 4/29

6:40 am-12:20 pm

1 stop14h 40m

$515

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 3/6

10:05 am-11:05 pm

2 stops28h 00m

Kastrup Copenhagen

Wed 3/11

8:55 am-2:20 pm

1 stop13h 25m

$516

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 3/22

10:05 am-11:05 pm

2 stops29h 00m

Kastrup Copenhagen

Fri 3/27

6:00 am-2:20 pm

1 stop16h 20m

$517

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 November is also cheap. Prices for this month can be found on momondo for an average of $545.

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

The cheapest day to depart from Seattle to Copenhagen is on a Tuesday when prices can be found for as low as $646. 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 $742.

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

Flying to Copenhagen from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $632 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around $782. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $625 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 $598 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 December 2025, prices for Seattle to Copenhagen flights are approximately 2% 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 $617.
The fastest flight from Seattle to Copenhagen takes 9h 15m
Direct flights go from Seattle to Copenhagen on Monday, Wednesday, Saturday and Sunday. The only airline offering direct flights is Scandinavian Airlines.
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
Air FrancePriceFrom $418Free CancellationRating
7.4
1,507 reviews
Search Air France flights
IcelandairPriceFrom $423Free CancellationRating
7.0
591 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $498Free CancellationRating
7.4
1,607 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $535Free CancellationRating
6.8
7,635 reviews
Search Lufthansa flights
United AirlinesPriceFrom $535Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
Air CanadaPriceFrom $536Free CancellationRating
7.1
10,534 reviews
Search Air Canada flights
KLMPriceFrom $540Free CancellationRating
7.7
1,428 reviews
Search KLM flights
British AirwaysPriceFrom $544Free CancellationRating
6.7
7,585 reviews
Search British Airways flights
DeltaPriceFrom $554Free CancellationRating
7.9
8,009 reviews
Search Delta flights
FinnairPriceFrom $580Free CancellationRating
7.6
1,338 reviews
Search Finnair 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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