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Cheap flights from Seattle to Denmark from $339

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 4/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Denmark

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
2:35 pm - 11:45 amSEA-CPH
12h 10m1 stop
Icelandair Logo
12:55 pm - 5:00 pmCPH-SEA
13h 05m1 stop
$445Icelandair
Find Deal
Mon, Nov 10 - Fri, Nov 14
Icelandair Logo
3:35 pm - 11:45 amSEA-CPH
12h 10m1 stop
Icelandair Logo
12:55 pm - 6:00 pmCPH-SEA
13h 05m1 stop
$446Icelandair
Find Deal
Mon, Mar 9 - Sun, Mar 15
Scandinavian Airlines Logo
10:20 am - 3:25 pmSEA-CPH
20h 05m1 stop
Scandinavian Airlines Logo
12:55 pm - 10:16 pmCPH-SEA
18h 21m1 stop
$460Scandinavian Airlines
Find Deal
Thu, Jan 15 - Sat, Feb 14
Scandinavian Airlines Logo
7:35 am - 7:00 amSEA-CPH
14h 25m1 stop
Scandinavian Airlines Logo
12:50 pm - 10:25 pmCPH-SEA
42h 35m2 stops
$472Scandinavian Airlines
Find Deal
Sun, Dec 7 - Tue, Jan 13
Lufthansa Logo
3:10 pm - 6:05 pmSEA-CPH
17h 55m2 stops
Lufthansa Logo
6:50 am - 12:10 pmCPH-SEA
14h 20m1 stop
$509Lufthansa
Find Deal
Sun, Nov 9 - Fri, Nov 14
Lufthansa Logo
3:10 pm - 5:35 pmSEA-CPH
17h 25m1 stop
Lufthansa Logo
6:55 am - 12:10 pmCPH-SEA
14h 15m1 stop
$520Lufthansa
Find Deal
Sun, Nov 9 - Mon, Nov 24
Delta Logo
7:20 am - 1:10 pmSEA-CPH
21h 50m2 stops
Delta Logo
2:15 pm - 12:35 pmCPH-SEA
30h 20m1 stop
$538Delta
Find Deal
Mon, Mar 9 - Sun, Mar 15
Delta Logo
4:55 pm - 7:50 pmSEA-CPH
17h 55m1 stop
Delta Logo
8:05 am - 2:45 pmCPH-SEA
15h 40m1 stop
$539Delta
Find Deal
Sat, Feb 14 - Sun, Feb 22
KLM Logo
10:55 am - 1:45 pmSEA-AAL
18h 50m2 stops
KLM Logo
6:10 pm - 3:50 pmAAL-SEA
30h 40m1 stop
$871KLM
Find Deal
Fri, Mar 27 - Tue, Mar 31
KLM Logo
10:55 am - 1:45 pmSEA-AAL
18h 50m2 stops
KLM Logo
10:20 am - 10:05 pmAAL-SEA
20h 45m2 stops
$881KLM
Find Deal
Fri, Mar 27 - Tue, Mar 31

Icelandair flights from Seattle to Denmark

Our best Icelandair deals on Seattle to Denmark flight tickets
Icelandair
Nov 10
SEA2:35 pmSeattle/Tacoma Intl
12h 10m
1 stop
CPH11:45 amKastrup Copenhagen
Nov 14
CPH12:55 pmKastrup Copenhagen
13h 05m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$445
Find similar
Icelandair
Mar 9
SEA3:35 pmSeattle/Tacoma Intl
12h 10m
1 stop
CPH11:45 amKastrup Copenhagen
Mar 15
CPH12:55 pmKastrup Copenhagen
13h 05m
1 stop
SEA6:00 pmSeattle/Tacoma Intl
$446
Find similar
Icelandair
Apr 2
SEA3:45 pmSeattle/Tacoma Intl
12h 10m
1 stop
CPH12:55 pmKastrup Copenhagen
Apr 13
CPH2:00 pmKastrup Copenhagen
15h 45m
1 stop
SEA8:45 pmSeattle/Tacoma Intl
$447
Find similar

United Airlines flights from Seattle to Denmark

Our best United Airlines deals on Seattle to Denmark flight tickets
United Airlines
Apr 13
SEA8:00 amSeattle/Tacoma Intl
17h 50m
1 stop
CPH10:50 amKastrup Copenhagen
Apr 19
CPH12:25 pmKastrup Copenhagen
43h 04m
2 stops
SEA10:29 pmSeattle/Tacoma Intl
$523
Find similar
United Airlines
Nov 2
SEA5:20 pmSeattle/Tacoma Intl
20h 45m
2 stops
CPH11:05 pmKastrup Copenhagen
Nov 6
CPH7:05 amKastrup Copenhagen
14h 05m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$538
Find similar
United Airlines
Apr 24
SEA2:15 pmSeattle/Tacoma Intl
19h 30m
2 stops
CPH6:45 pmKastrup Copenhagen
Apr 27
CPH6:00 amKastrup Copenhagen
14h 55m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$541
Find similar

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 October 30, 2025.
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

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 11/10

2:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

Fri 11/14

12:55 pm-5:00 pm

1 stop13h 05m

$445

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 3/9

3:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

Sun 3/15

12:55 pm-6:00 pm

1 stop13h 05m

$446

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 1/15

10:20 am-3:25 pm

1 stop20h 05m

Kastrup Copenhagen

Sat 2/14

12:55 pm-10:16 pm

1 stop18h 21m

$460

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 12/7

7:35 am-7:00 am

1 stop14h 25m

Kastrup Copenhagen

Tue 1/13

12:50 pm-10:25 pm

2 stops42h 35m

$472

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 11/9

3:10 pm-6:05 pm

2 stops17h 55m

Kastrup Copenhagen

Fri 11/14

6:50 am-12:10 pm

1 stop14h 20m

$509

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 11/9

3:10 pm-5:35 pm

1 stop17h 25m

Kastrup Copenhagen

Mon 11/24

6:55 am-12:10 pm

1 stop14h 15m

$520

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 3/9

7:20 am-1:10 pm

2 stops21h 50m

Kastrup Copenhagen

Sun 3/15

2:15 pm-12:35 pm

1 stop30h 20m

$538

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 2/14

4:55 pm-7:50 pm

1 stop17h 55m

Kastrup Copenhagen

Sun 2/22

8:05 am-2:45 pm

1 stop15h 40m

$539

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Fri 3/27

10:55 am-1:45 pm

2 stops18h 50m

Aalborg

Tue 3/31

6:10 pm-3:50 pm

1 stop30h 40m

$871

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Fri 3/27

10:55 am-1:45 pm

2 stops18h 50m

Aalborg

Tue 3/31

10:20 am-10:05 pm

2 stops20h 45m

$881

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 $544. If you aren’t able to travel to Denmark during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $573.

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

The cheapest day to depart from Seattle to Denmark is on a Tuesday. Travelers who choose to depart for Denmark on a Tuesday will often find tickets for as low as $644. On the other hand, Saturday 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 $746.

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

Flying to Denmark 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. In the morning is when there is more demand to fly to Denmark, so prices are often more expensive at around $782 per ticket.

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 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 $576 on momondo.

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl 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 54% 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

$456

Direct flights

None
The best one-way flight to Denmark from Seattle in the past 72 hours is $456. The best round-trip flight deal from Seattle to Denmark found on momondo in the last 72 hours is $533.
There are no direct flights from Seattle to Denmark. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Kastrup Copenhagen Airport.
Search flight deals

  • 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
Air FrancePriceFrom $418Free CancellationRating
7.4
1,482 reviews
Search Air France flights
DeltaPriceFrom $421Free CancellationRating
7.9
7,998 reviews
Search Delta flights
IcelandairPriceFrom $423Free CancellationRating
7.1
562 reviews
Search Icelandair flights
American AirlinesPriceFrom $492Free CancellationRating
7.2
11,034 reviews
Search American Airlines flights
British AirwaysPriceFrom $493Free CancellationRating
6.7
7,488 reviews
Search British Airways flights
Scandinavian AirlinesPriceFrom $496Free CancellationRating
7.4
1,548 reviews
Search Scandinavian Airlines flights
FinnairPriceFrom $504Free CancellationRating
7.6
1,333 reviews
Search Finnair flights
Air CanadaPriceFrom $536Free CancellationRating
7.1
10,383 reviews
Search Air Canada flights
United AirlinesPriceFrom $560Free CancellationRating
7.4
8,996 reviews
Search United Airlines flights
KLMPriceFrom $582Free CancellationRating
7.7
1,406 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.

An easier way to manage your Denmark trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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