What is the cheapest airline that flies from Seattle/Tacoma Intl to Denmark?

KLM, Delta, and Air France are the most popular carriers operating from Seattle/Tacoma Intl to Denmark

What airlines fly to Denmark?

Scandinavian Airlines, Icelandair and Delta are the top three most popular airlines that fly to Denmark from Seattle according to our data. Scandinavian Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Denmark. Keep in mind that there are 10 different airlines that fly to Denmark on a routine basis, so you have a few additional options to choose from.

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?

There are 10 operators available for flights from Seattle/Tacoma Intl Airport to Denmark as of May 2026.

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.

$255 Cheap Flights from Seattle to Denmark in 2026

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Find the cheapest flights from Seattle to Denmark

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:34 pm - 10:50 am

SEA

CPH

57h 16m

2 stops

12:15 pm - 3:39 pm

CPH

SEA

36h 24m

2 stops

$470United Airlines

Sat, Aug 15 - Mon, Aug 24

2:35 pm - 11:45 am

SEA

CPH

12h 10m

1 stop

12:55 pm - 5:00 pm

CPH

SEA

13h 05m

1 stop

$473Icelandair

Sat, Nov 7 - Sat, Nov 14

5:45 am - 8:55 am

SEA

CPH

42h 10m

2 stops

12:15 pm - 10:07 am

CPH

SEA

30h 52m

2 stops

$474Air Canada

Sat, Aug 15 - Mon, Aug 24

6:50 pm - 4:25 pm

SEA

CPH

12h 35m

1 stop

11:35 am - 10:16 pm

CPH

SEA

19h 41m

1 stop

$478Multiple Airlines

Sun, Oct 11 - Wed, Nov 25

6:50 pm - 10:25 pm

SEA

BLL

18h 35m

1 stop

6:40 am - 11:15 am

BLL

SEA

13h 35m

1 stop

$674Air France

Mon, Jun 29 - Thu, Jul 9

5:45 pm - 10:00 am

SEA

AAL

31h 15m

1 stop

6:10 pm - 11:37 am

AAL

SEA

26h 27m

1 stop

$682KLM

Sun, Aug 2 - Tue, Aug 18

1:45 pm - 11:00 am

SEA

BLL

12h 15m

1 stop

6:00 am - 4:24 pm

BLL

SEA

19h 24m

1 stop

$687Delta

Sun, May 31 - Thu, Jun 4

7:15 am - 9:35 am

SEA

BLL

17h 20m

2 stops

6:40 am - 11:15 am

BLL

SEA

13h 35m

1 stop

$693Delta

Tue, Aug 4 - Thu, Aug 13

3:55 pm - 11:50 pm

SEA

AAR

22h 55m

1 stop

6:35 pm - 1:45 pm

AAR

SEA

28h 10m

1 stop

$717Scandinavian Airlines

Sun, May 31 - Thu, Jun 4

3:55 pm - 9:25 am

SEA

BLL

32h 30m

1 stop

5:15 pm - 7:49 pm

BLL

SEA

35h 34m

2 stops

$763Scandinavian Airlines

Sun, Jun 28 - Wed, Jul 8

United Airlines flights from Seattle to Denmark

Our best United Airlines deals on Seattle to Denmark flight tickets

United Airlines

Aug 15

SEA4:34 pmSeattle/Tacoma Intl

57h 16m

2 stops

CPH10:50 amKastrup Copenhagen

Aug 24

CPH12:15 pmKastrup Copenhagen

36h 24m

2 stops

SEA3:39 pmSeattle/Tacoma Intl

$470

United Airlines

Nov 7

SEA8:10 amSeattle/Tacoma Intl

17h 10m

1 stop

CPH10:20 amKastrup Copenhagen

Nov 15

CPH11:35 amKastrup Copenhagen

19h 41m

1 stop

SEA10:16 pmSeattle/Tacoma Intl

$484

United Airlines

Aug 15

SEA4:34 pmSeattle/Tacoma Intl

33h 01m

2 stops

CPH10:35 amKastrup Copenhagen

Aug 22

CPH12:15 pmKastrup Copenhagen

30h 21m

2 stops

SEA9:36 amSeattle/Tacoma Intl

$494

Icelandair flights from Seattle to Denmark

Our best Icelandair deals on Seattle to Denmark flight tickets

Icelandair

Nov 7

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

$473

Icelandair

Oct 6

SEA7:00 pmSeattle/Tacoma Intl

11h 55m

1 stop

CPH3:55 pmKastrup Copenhagen

Nov 18

CPH12:55 pmKastrup Copenhagen

13h 05m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$537

Icelandair

Aug 14

SEA11:25 pmSeattle/Tacoma Intl

21h 55m

1 stop

CPH6:20 amKastrup Copenhagen

Dec 10

CPH12:55 pmKastrup Copenhagen

13h 05m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$542

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 8/15

4:34 pm-10:50 am

2 stops57h 16m

Kastrup Copenhagen

Mon 8/24

12:15 pm-3:39 pm

2 stops36h 24m

$470

Quickest round-trip

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 11/7

2:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

Sat 11/14

12:55 pm-5:00 pm

1 stop13h 05m

$473

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sat 8/15

5:45 am-8:55 am

2 stops42h 10m

Kastrup Copenhagen

Mon 8/24

12:15 pm-10:07 am

2 stops30h 52m

$474

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 10/11

6:50 pm-4:25 pm

1 stop12h 35m

Kastrup Copenhagen

Wed 11/25

11:35 am-10:16 pm

1 stop19h 41m

$478

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Mon 6/29

6:50 pm-10:25 pm

1 stop18h 35m

Billund

Thu 7/9

6:40 am-11:15 am

1 stop13h 35m

$674

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Sun 8/2

5:45 pm-10:00 am

1 stop31h 15m

Aalborg

Tue 8/18

6:10 pm-11:37 am

1 stop26h 27m

$682

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 5/31

1:45 pm-11:00 am

1 stop12h 15m

Billund

Thu 6/4

6:00 am-4:24 pm

1 stop19h 24m

$687

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Tue 8/4

7:15 am-9:35 am

2 stops17h 20m

Billund

Thu 8/13

6:40 am-11:15 am

1 stop13h 35m

$693

SeattleAarhus

SEA - AAR

SEAAAR

Seattle/Tacoma Intl

Sun 5/31

3:55 pm-11:50 pm

1 stop22h 55m

Aarhus

Thu 6/4

6:35 pm-1:45 pm

1 stop28h 10m

$717

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 6/28

3:55 pm-9:25 am

1 stop32h 30m

Billund

Wed 7/8

5:15 pm-7:49 pm

2 stops35h 34m

$763

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Denmark?

In general, November 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 $212. If you aren’t able to travel to Denmark during the month of November, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $332.

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

The cheapest day to depart from Seattle to Denmark is on a Monday. Travelers who choose to depart for Denmark on a Monday will often find tickets for as low as $644. On the other hand, Tuesday 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 $753.

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 $602 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 $560 on momondo.

Can stopping save me money on Seattle to Denmark flights?

You could potentially save up to 53% 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	$579
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 $579. The best round-trip flight deal from Seattle to Denmark found on momondo in the last 72 hours is $748.

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?
There are 10 operators available for flights from Seattle/Tacoma Intl Airport to Denmark as of May 2026.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Denmark is Airbus A350-900 (46.96% of total bookings). The next most popular plane models are Airbus A330-900neo (16.48%), Boeing 787-10 Dreamliner (9.58%), and Boeing 777-300ER (8.20%).

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 France	PriceFrom $332	Free Cancellation	Rating 7.4 1,585 reviews	Search Air France flights
SWISS	PriceFrom $371	Free Cancellation	Rating 7.6 1,942 reviews	Search SWISS flights
Icelandair	PriceFrom $419	Free Cancellation	Rating 7.0 652 reviews	Search Icelandair flights
Delta	PriceFrom $421	Free Cancellation	Rating 7.9 8,451 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $504	Free Cancellation	Rating 7.4 1,772 reviews	Search Scandinavian Airlines flights
British Airways	PriceFrom $506	Free Cancellation	Rating 6.7 7,969 reviews	Search British Airways flights
Lufthansa	PriceFrom $509	Free Cancellation	Rating 6.8 7,988 reviews	Search Lufthansa flights
Air Canada	PriceFrom $515	Free Cancellation	Rating 7.1 11,017 reviews	Search Air Canada flights
KLM	PriceFrom $528	Free Cancellation	Rating 7.8 1,513 reviews	Search KLM flights
United Airlines	PriceFrom $535	Free Cancellation	Rating 7.4 9,699 reviews	Search United Airlines 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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Popular cities

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Feeling lucky

Popular cities in Denmark

Flights to Copenhagenfrom $425

Flights to Billundfrom $511

Flights to Aalborgfrom $573

Flights to Aarhusfrom $618

Flights to Sønderborgfrom $981

Flights to Karupfrom $1,271

Flights to Esbjergfrom $1,557

Cheap flights from Seattle to Denmark from $255

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 5/29. 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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United Airlines flights from Seattle to Denmark

Our best United Airlines deals on Seattle to Denmark flight tickets

Icelandair flights from Seattle to Denmark

Our best Icelandair deals on Seattle to Denmark flight tickets

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See travel insights to Denmark from

How to get the cheapest flight ticket from Seattle to Denmark

What is the cheapest month to fly to Denmark?

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

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

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

Can stopping save me money on Seattle to Denmark flights?

What is the cheapest airline that flies from Seattle/Tacoma Intl to Denmark?

What airlines fly to Denmark?

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

Fastest flight time

Direct flights

Airports in Denmark

Frequently asked questions about flying 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

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Denmark

Popular cities in Denmark

Popular flights according to clicks in the last 7 days on momondo

Seattle flight routes

According to popular flight searches on momondo this year

Denmark flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Denmark

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Denmark

List of cabin classes available on flights landing in Denmark. Availability may vary depending on flight origin and airline.

Complete your trip to Denmark

Explore popular destinations other users love

According to popular flight searches on momondo this year