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Cheap flights from Seattle to Denmark from $180

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 Denmark departing on 10/14. 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 Denmark

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
7:45 am - 10:20 amSEA  Seattle/Tacoma Intl-CPH Kastrup Copenhagen
17h 35m1 stop Toronto Pearson Intl
Air Canada Logo
11:35 am - 8:59 pmCPH  Kastrup Copenhagen-SEA Seattle/Tacoma Intl
18h 24m1 stop Toronto Pearson Intl
$484Air Canada
Sat, Jan 30 - Sun, Feb 14
Air Canada Logo
7:05 pm - 10:20 amSEA  Seattle/Tacoma Intl-CPH Kastrup Copenhagen
30h 15m2 stops Vancouver Intl Toronto Pearson Intl
Air Canada Logo
11:35 am - 9:57 pmCPH  Kastrup Copenhagen-SEA Seattle/Tacoma Intl
19h 22m2 stops Toronto Pearson Intl Vancouver Intl
$484Air Canada
Wed, Feb 3 - Sat, Feb 20
United Airlines Logo
7:45 am - 10:20 amSEA  Seattle/Tacoma Intl-CPH Kastrup Copenhagen
17h 35m1 stop Toronto Pearson Intl
United Airlines Logo
11:35 am - 8:59 pmCPH  Kastrup Copenhagen-SEA Seattle/Tacoma Intl
18h 24m1 stop Toronto Pearson Intl
$484United Airlines
Fri, Jan 29 - Wed, Feb 17
United Airlines Logo
7:45 am - 10:20 amSEA  Seattle/Tacoma Intl-CPH Kastrup Copenhagen
17h 35m1 stop Toronto Pearson Intl
United Airlines Logo
11:35 am - 8:59 pmCPH  Kastrup Copenhagen-SEA Seattle/Tacoma Intl
18h 24m1 stop Toronto Pearson Intl
$484United Airlines
Sat, Jan 30 - Sat, Feb 20
Multiple Airlines Logo
7:45 am - 10:20 amSEA  Seattle/Tacoma Intl-CPH Kastrup Copenhagen
17h 35m1 stop Toronto Pearson Intl
Multiple Airlines Logo
11:35 am - 8:59 pmCPH  Kastrup Copenhagen-SEA Seattle/Tacoma Intl
18h 24m1 stop Toronto Pearson Intl
$484Multiple Airlines
Thu, Dec 24 - Sun, Jan 10
Multiple Airlines Logo
10:10 am - 10:20 amSEA  Seattle/Tacoma Intl-CPH Kastrup Copenhagen
39h 10m2 stops Vancouver Intl Toronto Pearson Intl
Multiple Airlines Logo
11:35 am - 8:59 pmCPH  Kastrup Copenhagen-SEA Seattle/Tacoma Intl
18h 24m1 stop Toronto Pearson Intl
$484Multiple Airlines
Wed, Jan 27 - Sun, Feb 7
Scandinavian Airlines Logo
3:55 pm - 10:10 amSEA  Seattle/Tacoma Intl-CPH Kastrup Copenhagen
9h 15mnonstop
Scandinavian Airlines Logo
1:05 pm - 1:45 pmCPH  Kastrup Copenhagen-SEA Seattle/Tacoma Intl
9h 40mnonstop
$491Scandinavian Airlines
Sun, Sep 27 - Fri, Oct 2
Scandinavian Airlines Logo
3:55 pm - 10:10 amSEA  Seattle/Tacoma Intl-CPH Kastrup Copenhagen
9h 15mnonstop
Scandinavian Airlines Logo
1:05 pm - 1:45 pmCPH  Kastrup Copenhagen-SEA Seattle/Tacoma Intl
9h 40mnonstop
$491Scandinavian Airlines
Sun, Sep 27 - Fri, Oct 9
Delta Logo
1:30 pm - 6:45 pmSEA  Seattle/Tacoma Intl-CPH Kastrup Copenhagen
20h 15m1 stop Paris Charles de Gaulle
Delta Logo
9:00 am - 8:09 pmCPH  Kastrup Copenhagen-SEA Seattle/Tacoma Intl
20h 09m1 stop New York John F Kennedy Intl
$491Delta
Fri, Oct 9 - Tue, Oct 13
Delta Logo
6:40 pm - 6:45 pmSEA  Seattle/Tacoma Intl-CPH Kastrup Copenhagen
15h 05m1 stop Paris Charles de Gaulle
Delta Logo
9:00 am - 11:04 pmCPH  Kastrup Copenhagen-SEA Seattle/Tacoma Intl
23h 04m1 stop New York John F Kennedy Intl
$491Delta
Thu, Oct 8 - Tue, Oct 13

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Air Canada flights from Seattle to Denmark

Our best Air Canada deals on Seattle to Denmark flight tickets
Air Canada
Jan 31
SEA7:05 pmSeattle/Tacoma Intl
54h 15m
2 stops
CPH10:20 amKastrup Copenhagen
Feb 17
CPH11:35 amKastrup Copenhagen
19h 22m
2 stops
SEA9:57 pmSeattle/Tacoma Intl
$484
Air Canada
Jan 29
SEA7:45 amSeattle/Tacoma Intl
17h 35m
1 stop
CPH10:20 amKastrup Copenhagen
Feb 18
CPH8:55 amKastrup Copenhagen
22h 02m
2 stops
SEA9:57 pmSeattle/Tacoma Intl
$500

Icelandair flights from Seattle to Denmark

Our best Icelandair deals on Seattle to Denmark flight tickets
Icelandair
Feb 3
SEA2:35 pmSeattle/Tacoma Intl
20h 10m
1 stop
CPH7:45 pmKastrup Copenhagen
Feb 14
CPH12:55 pmKastrup Copenhagen
13h 05m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$501
Icelandair
Aug 20
SEA11:25 pmSeattle/Tacoma Intl
13h 10m
1 stop
BLL9:35 pmBillund
Aug 28
BLL10:35 pmBillund
22h 10m
1 stop
SEA11:45 amSeattle/Tacoma Intl
$502
Icelandair
Dec 15
SEA2:35 pmSeattle/Tacoma Intl
12h 25m
1 stop
CPH12:00 pmKastrup Copenhagen
Dec 22
CPH12:55 pmKastrup Copenhagen
13h 05m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$516

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Denmark 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 August 16, 2026.
Use the filters below to find and compare flights from Seattle to Denmark that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sat 1/30

7:45 am-10:20 am

1 stop17h 35m

Kastrup Copenhagen

Sun 2/14

11:35 am-8:59 pm

1 stop18h 24m

$484

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Wed 2/3

7:05 pm-10:20 am

2 stops30h 15m

Kastrup Copenhagen

Sat 2/20

11:35 am-9:57 pm

2 stops19h 22m

$484

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Fri 1/29

7:45 am-10:20 am

1 stop17h 35m

Kastrup Copenhagen

Wed 2/17

11:35 am-8:59 pm

1 stop18h 24m

$484

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sat 1/30

7:45 am-10:20 am

1 stop17h 35m

Kastrup Copenhagen

Sat 2/20

11:35 am-8:59 pm

1 stop18h 24m

$484

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Thu 12/24

7:45 am-10:20 am

1 stop17h 35m

Kastrup Copenhagen

Sun 1/10

11:35 am-8:59 pm

1 stop18h 24m

$484

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Wed 1/27

10:10 am-10:20 am

2 stops39h 10m

Kastrup Copenhagen

Sun 2/7

11:35 am-8:59 pm

1 stop18h 24m

$484
Quickest round-trip

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sun 9/27

3:55 pm-10:10 am

Nonstop9h 15m

Kastrup Copenhagen

Fri 10/2

1:05 pm-1:45 pm

Nonstop9h 40m

$491

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Sun 9/27

3:55 pm-10:10 am

Nonstop9h 15m

Kastrup Copenhagen

Fri 10/9

1:05 pm-1:45 pm

Nonstop9h 40m

$491

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Fri 10/9

1:30 pm-6:45 pm

1 stop20h 15m

Kastrup Copenhagen

Tue 10/13

9:00 am-8:09 pm

1 stop20h 09m

$491

SeattleCopenhagen

SEA Seattle/Tacoma Intl - CPH Kastrup Copenhagen

SEACPH

Seattle/Tacoma Intl

Thu 10/8

6:40 pm-6:45 pm

1 stop15h 05m

Kastrup Copenhagen

Tue 10/13

9:00 am-11:04 pm

1 stop23h 04m

$491

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 Denmark from

How to get the cheapest flight ticket from Seattle to Denmark

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 Denmark?

In general, February is the cheapest month to fly from Seattle to Denmark. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $462. If you aren’t able to travel to Denmark 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 $516.

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

The cheapest day to depart from Seattle to Denmark is on a Sunday. Travelers who choose to depart for Denmark on a Sunday will often find tickets for as low as $745. On the other hand, Thursday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $825.

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

Fly from Seattle/Tacoma Intl to Kastrup Copenhagen for the best Seattle/Tacoma Intl - Denmark flight prices

How far in advance should I book a flight from Seattle to Denmark?

You are more likely to see cheaper flights to Denmark from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Denmark for around $626 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denmark from Seattle for as low as $604 on momondo.

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

There are 3 cabin classes available to choose from on Seattle to Denmark 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 Denmark flights?

You could potentially save up to 56% on your flight if you consider stops on a Seattle to Denmark flight.

Cheap Seattle to Denmark flight deals and tips

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

Best Price Found

$594

Fastest flight time

9h 15m

Direct flights

Mon, Wed, Sat and Sun

Airports in Denmark

19 airports
The best one-way flight to Denmark from Seattle in the past 72 hours is $594. The best round-trip flight deal from Seattle to Denmark found on momondo in the last 72 hours is $560.
The fastest flight from Seattle to Denmark takes 9h 15m
Direct flights go from Seattle to Denmark on Monday, Wednesday, Saturday and Sunday. There are no airlines offering direct flights.
There are 19 airports in Denmark. From Seattle there are direct flights to Kastrup Copenhagen (CPH).
Search flight deals

Frequently asked questions about flying from Seattle to Denmark

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

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

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

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

    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 Denmark.

  • What documentation or ID do you need to fly to Denmark?

    The necessary travel and health documents for your Denmark 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 Denmark?

Best airlines flying from Seattle to Denmark

Compare and see reviews for airlines that fly from Seattle to Denmark with momondo
Airline
Rating
Free Cancellation
Price
SWISSPriceFrom $371Free CancellationRating
7.5
2,034 reviews
Search SWISS flights
IcelandairPriceFrom $420Free CancellationRating
6.9
731 reviews
Search Icelandair flights
DeltaPriceFrom $421Free CancellationRating
7.8
8,503 reviews
Search Delta flights
Air FrancePriceFrom $469Free CancellationRating
7.5
1,645 reviews
Search Air France flights
Air CanadaPriceFrom $482Free CancellationRating
7.1
11,480 reviews
Search Air Canada flights
United AirlinesPriceFrom $482Free CancellationRating
7.4
10,105 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $502Free CancellationRating
7.4
1,952 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $506Free CancellationRating
6.7
8,168 reviews
Search British Airways flights
LufthansaPriceFrom $509Free CancellationRating
6.8
8,195 reviews
Search Lufthansa flights
KLMPriceFrom $540Free CancellationRating
7.8
1,559 reviews
Search KLM flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Denmark. momondo saves you time and could save you money on your trip.

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

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

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

Once all potential Seattle to Denmark flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Denmark from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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