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Cheap flights from Seattle to Copenhagen from $231

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 12/8. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Copenhagen

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
3:40 pm - 9:45 pm
SEA
-
CPH
21h 05m
1 stop
Icelandair Logo
2:00 pm - 5:55 pm
CPH
-
SEA
12h 55m
1 stop
$540Icelandair
Tue, Jul 21 - Thu, Aug 20
Lufthansa Logo
2:10 pm - 6:40 pm
SEA
-
CPH
19h 30m
2 stops
Lufthansa Logo
12:15 pm - 10:42 pm
CPH
-
SEA
19h 27m
2 stops
$541Lufthansa
Sun, Aug 9 - Wed, Aug 26
Lufthansa Logo
7:05 pm - 10:20 am
SEA
-
CPH
30h 15m
2 stops
Lufthansa Logo
11:35 am - 10:29 pm
CPH
-
SEA
19h 54m
2 stops
$543Lufthansa
Fri, Dec 11 - Sat, Jan 9
Icelandair Logo
11:25 pm - 6:20 am
SEA
-
CPH
21h 55m
1 stop
Icelandair Logo
10:35 pm - 11:45 am
CPH
-
SEA
22h 10m
1 stop
$544Icelandair
Tue, Jul 28 - Mon, Aug 17
Icelandair Logo
11:25 pm - 6:20 am
SEA
-
CPH
21h 55m
1 stop
Icelandair Logo
7:20 am - 11:45 am
CPH
-
SEA
13h 25m
1 stop
$545Icelandair
Tue, Jul 28 - Wed, Aug 5
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
CPH
12h 15m
1 stop
Icelandair Logo
2:00 pm - 5:55 pm
CPH
-
SEA
12h 55m
1 stop
$546Icelandair
Sun, Oct 4 - Mon, Oct 19
Air Canada Logo
7:45 am - 9:15 am
SEA
-
CPH
16h 30m
2 stops
Air Canada Logo
9:50 am - 8:59 pm
CPH
-
SEA
20h 09m
2 stops
$547Air Canada
Fri, Dec 11 - Sun, Jan 10
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
$548Icelandair
Sat, Oct 3 - Thu, Oct 15
Icelandair Logo
3:40 pm - 9:45 pm
SEA
-
CPH
21h 05m
1 stop
Icelandair Logo
7:20 am - 11:45 am
CPH
-
SEA
13h 25m
1 stop
$549Icelandair
Sun, Jul 19 - Tue, Aug 4
Lufthansa Logo
2:10 pm - 11:30 pm
SEA
-
CPH
24h 20m
2 stops
Lufthansa Logo
6:00 am - 6:22 pm
CPH
-
SEA
21h 22m
2 stops
$550Lufthansa
Fri, Aug 14 - Thu, Dec 10

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United Airlines flights from Seattle to Copenhagen

Our best United Airlines deals on Seattle to Copenhagen flight tickets
United Airlines
Aug 7
SEA5:15 pmSeattle/Tacoma Intl
32h 35m
2 stops
CPH10:50 amKastrup Copenhagen
Aug 17
CPH12:15 pmKastrup Copenhagen
36h 24m
2 stops
SEA3:39 pmSeattle/Tacoma Intl
$578
United Airlines
Aug 7
SEA5:15 pmSeattle/Tacoma Intl
32h 35m
2 stops
CPH10:50 amKastrup Copenhagen
Aug 17
CPH12:30 pmKastrup Copenhagen
39h 38m
3 stops
SEA7:08 pmSeattle/Tacoma Intl
$583
United Airlines
Aug 9
SEA2:10 pmSeattle/Tacoma Intl
34h 20m
1 stop
CPH9:30 amKastrup Copenhagen
Aug 25
CPH12:45 pmKastrup Copenhagen
17h 22m
1 stop
SEA9:07 pmSeattle/Tacoma Intl
$595

Air Canada flights from Seattle to Copenhagen

Our best Air Canada deals on Seattle to Copenhagen flight tickets
Air Canada
Dec 11
SEA7:45 amSeattle/Tacoma Intl
16h 30m
2 stops
CPH9:15 amKastrup Copenhagen
Jan 10
CPH9:50 amKastrup Copenhagen
20h 09m
2 stops
SEA8:59 pmSeattle/Tacoma Intl
$547
Air Canada
Aug 26
SEA7:20 pmSeattle/Tacoma Intl
28h 35m
2 stops
CPH8:55 amKastrup Copenhagen
Aug 31
CPH12:15 pmKastrup Copenhagen
30h 52m
2 stops
SEA10:07 amSeattle/Tacoma Intl
$577
Air Canada
Aug 22
SEA5:50 amSeattle/Tacoma Intl
42h 05m
2 stops
CPH8:55 amKastrup Copenhagen
Sep 3
CPH12:45 pmKastrup Copenhagen
30h 22m
2 stops
SEA10:07 amSeattle/Tacoma Intl
$582

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 July 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

Cheapest round-trip

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 7/21

3:40 pm-9:45 pm

1 stop21h 05m

Kastrup Copenhagen

Thu 8/20

2:00 pm-5:55 pm

1 stop12h 55m

$540

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 8/9

2:10 pm-6:40 pm

2 stops19h 30m

Kastrup Copenhagen

Wed 8/26

12:15 pm-10:42 pm

2 stops19h 27m

$541

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 12/11

7:05 pm-10:20 am

2 stops30h 15m

Kastrup Copenhagen

Sat 1/9

11:35 am-10:29 pm

2 stops19h 54m

$543

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 7/28

11:25 pm-6:20 am

1 stop21h 55m

Kastrup Copenhagen

Mon 8/17

10:35 pm-11:45 am

1 stop22h 10m

$544

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 7/28

11:25 pm-6:20 am

1 stop21h 55m

Kastrup Copenhagen

Wed 8/5

7:20 am-11:45 am

1 stop13h 25m

$545
Quickest round-trip

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 10/4

3:40 pm-12:55 pm

1 stop12h 15m

Kastrup Copenhagen

Mon 10/19

2:00 pm-5:55 pm

1 stop12h 55m

$546

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 12/11

7:45 am-9:15 am

2 stops16h 30m

Kastrup Copenhagen

Sun 1/10

9:50 am-8:59 pm

2 stops20h 09m

$547

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 10/3

7:00 pm-3:55 pm

1 stop11h 55m

Kastrup Copenhagen

Thu 10/15

2:00 pm-8:40 pm

1 stop15h 40m

$548

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 7/19

3:40 pm-9:45 pm

1 stop21h 05m

Kastrup Copenhagen

Tue 8/4

7:20 am-11:45 am

1 stop13h 25m

$549

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 8/14

2:10 pm-11:30 pm

2 stops24h 20m

Kastrup Copenhagen

Thu 12/10

6:00 am-6:22 pm

2 stops21h 22m

$550

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 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 February. Flight prices, which tend to average around $447, 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 April is also cheap. Prices for this month can be found on momondo for an average of $508.

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 $690. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Copenhagen for around $806.

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 from Seattle 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 $616 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 $576 on momondo.

What cabin class options are available on Seattle to Copenhagen flights?

There are 3 cabin classes available to choose from on Seattle to 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 58% 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 July 2026, prices for Seattle to Copenhagen flights are approximately 59% 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

$539

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 $539. The best round-trip flight deal from Seattle to Copenhagen found on momondo in the last 72 hours is $777.
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

Frequently asked questions about flying from Seattle to Copenhagen

  • 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
SWISSPriceFrom $371Free CancellationRating
7.5
1,985 reviews
Search SWISS flights
IcelandairPriceFrom $419Free CancellationRating
7.0
697 reviews
Search Icelandair flights
Air FrancePriceFrom $469Free CancellationRating
7.5
1,616 reviews
Search Air France flights
Air CanadaPriceFrom $482Free CancellationRating
7.1
11,291 reviews
Search Air Canada flights
United AirlinesPriceFrom $482Free CancellationRating
7.4
9,927 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $501Free CancellationRating
7.4
1,862 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $506Free CancellationRating
7.8
8,452 reviews
Search Delta flights
British AirwaysPriceFrom $506Free CancellationRating
6.7
8,091 reviews
Search British Airways flights
LufthansaPriceFrom $509Free CancellationRating
6.8
8,108 reviews
Search Lufthansa flights
KLMPriceFrom $528Free CancellationRating
7.8
1,532 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.

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