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Cheap flights from Seattle to Denmark from $183

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 10/7. 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.
Multiple Airlines Logo
2:50 pm - 12:25 pm
SEA
-
CPH
12h 35m
1 stop
Multiple Airlines Logo
8:55 am - 9:57 pm
CPH
-
SEA
22h 02m
2 stops
$489Multiple Airlines
Fri, Nov 13 - Tue, Nov 17
Multiple Airlines Logo
6:50 pm - 4:35 pm
SEA
-
CPH
12h 45m
1 stop
Multiple Airlines Logo
12:15 pm - 6:32 pm
CPH
-
SEA
39h 17m
2 stops
$491Multiple Airlines
Tue, Aug 11 - Fri, Aug 21
Scandinavian Airlines Logo
3:55 pm - 10:10 am
SEA
-
CPH
9h 15mnonstop
Scandinavian Airlines Logo
1:05 pm - 1:45 pm
CPH
-
SEA
9h 40mnonstop
$492Scandinavian Airlines
Tue, Sep 15 - Tue, Oct 6
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
CPH
12h 15m
1 stop
Icelandair Logo
12:55 pm - 5:00 pm
CPH
-
SEA
13h 05m
1 stop
$494Icelandair
Sun, Oct 11 - Wed, Nov 25
United Airlines Logo
2:50 pm - 12:25 pm
SEA
-
CPH
12h 35m
1 stop
United Airlines Logo
11:35 am - 8:59 pm
CPH
-
SEA
18h 24m
1 stop
$497United Airlines
Wed, Nov 18 - Wed, Nov 25
Icelandair Logo
7:00 pm - 9:35 pm
SEA
-
BLL
17h 35m
1 stop
Icelandair Logo
10:35 pm - 11:45 am
BLL
-
SEA
22h 10m
1 stop
$498Icelandair
Sun, Aug 16 - Fri, Aug 21
Lufthansa Logo
6:50 pm - 4:25 pm
SEA
-
CPH
12h 35m
1 stop
Lufthansa Logo
12:15 pm - 2:22 pm
CPH
-
SEA
35h 07m
2 stops
$502Lufthansa
Sun, Aug 16 - Wed, Aug 19
Scandinavian Airlines Logo
3:55 pm - 3:05 pm
SEA
-
BLL
14h 10m
1 stop
Scandinavian Airlines Logo
6:00 am - 1:45 pm
BLL
-
SEA
16h 45m
1 stop
$613Scandinavian Airlines
Sat, Sep 5 - Sat, Sep 12
Delta Logo
1:50 pm - 3:45 pm
SEA
-
BLL
16h 55m
1 stop
Delta Logo
12:00 pm - 5:34 pm
BLL
-
SEA
14h 34m
1 stop
$617Delta
Tue, Aug 18 - Tue, Aug 25
Delta Logo
7:15 am - 9:35 am
SEA
-
BLL
17h 20m
2 stops
Delta Logo
6:40 am - 11:15 am
BLL
-
SEA
13h 35m
1 stop
$622Delta
Tue, Aug 18 - Tue, Aug 25

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Lufthansa flights from Seattle to Denmark

Our best Lufthansa deals on Seattle to Denmark flight tickets
Lufthansa
Aug 16
SEA6:50 pmSeattle/Tacoma Intl
12h 35m
1 stop
CPH4:25 pmKastrup Copenhagen
Aug 19
CPH12:15 pmKastrup Copenhagen
35h 07m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
$502
Lufthansa
Dec 3
SEA3:15 pmSeattle/Tacoma Intl
34h 05m
2 stops
CPH10:20 amKastrup Copenhagen
Dec 8
CPH1:10 pmKastrup Copenhagen
32h 50m
1 stop
SEA1:00 pmSeattle/Tacoma Intl
$506
Lufthansa
Nov 17
SEA8:10 amSeattle/Tacoma Intl
29h 55m
2 stops
CPH11:05 pmKastrup Copenhagen
Nov 27
CPH11:35 amKastrup Copenhagen
36h 02m
2 stops
SEA2:37 pmSeattle/Tacoma Intl
$511

Delta flights from Seattle to Denmark

Our best Delta deals on Seattle to Denmark flight tickets
Delta
Oct 9
SEA7:15 amSeattle/Tacoma Intl
14h 30m
1 stop
CPH6:45 amKastrup Copenhagen
Oct 19
CPH9:00 amKastrup Copenhagen
20h 09m
1 stop
SEA8:09 pmSeattle/Tacoma Intl
$536
Delta
Oct 5
SEA4:01 pmSeattle/Tacoma Intl
29h 44m
1 stop
CPH6:45 amKastrup Copenhagen
Oct 15
CPH9:00 amKastrup Copenhagen
20h 09m
1 stop
SEA8:09 pmSeattle/Tacoma Intl
$542
Delta
Aug 8
SEA6:40 pmSeattle/Tacoma Intl
29h 35m
1 stop
CPH9:15 amKastrup Copenhagen
Aug 20
CPH9:00 amKastrup Copenhagen
20h 20m
1 stop
SEA8:20 pmSeattle/Tacoma Intl
$608

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 July 26, 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 - CPH

SEACPH

Seattle/Tacoma Intl

Fri 11/13

2:50 pm-12:25 pm

1 stop12h 35m

Kastrup Copenhagen

Tue 11/17

8:55 am-9:57 pm

2 stops22h 02m

$489

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 8/11

6:50 pm-4:35 pm

1 stop12h 45m

Kastrup Copenhagen

Fri 8/21

12:15 pm-6:32 pm

2 stops39h 17m

$491
Quickest round-trip

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 9/15

3:55 pm-10:10 am

Nonstop9h 15m

Kastrup Copenhagen

Tue 10/6

1:05 pm-1:45 pm

Nonstop9h 40m

$492

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 10/11

3:40 pm-12:55 pm

1 stop12h 15m

Kastrup Copenhagen

Wed 11/25

12:55 pm-5:00 pm

1 stop13h 05m

$494

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 11/18

2:50 pm-12:25 pm

1 stop12h 35m

Kastrup Copenhagen

Wed 11/25

11:35 am-8:59 pm

1 stop18h 24m

$497

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 8/16

7:00 pm-9:35 pm

1 stop17h 35m

Billund

Fri 8/21

10:35 pm-11:45 am

1 stop22h 10m

$498

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 8/16

6:50 pm-4:25 pm

1 stop12h 35m

Kastrup Copenhagen

Wed 8/19

12:15 pm-2:22 pm

2 stops35h 07m

$502

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 9/5

3:55 pm-3:05 pm

1 stop14h 10m

Billund

Sat 9/12

6:00 am-1:45 pm

1 stop16h 45m

$613

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Tue 8/18

1:50 pm-3:45 pm

1 stop16h 55m

Billund

Tue 8/25

12:00 pm-5:34 pm

1 stop14h 34m

$617

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Tue 8/18

7:15 am-9:35 am

2 stops17h 20m

Billund

Tue 8/25

6:40 am-11:15 am

1 stop13h 35m

$622

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 $515.

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 $736. 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 $619 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 $610 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 58% 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

$557

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 $557. The best round-trip flight deal from Seattle to Denmark found on momondo in the last 72 hours is $639.
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
2,018 reviews
Search SWISS flights
IcelandairPriceFrom $420Free CancellationRating
7.0
716 reviews
Search Icelandair flights
DeltaPriceFrom $421Free CancellationRating
7.8
8,487 reviews
Search Delta flights
Air FrancePriceFrom $469Free CancellationRating
7.5
1,625 reviews
Search Air France flights
Air CanadaPriceFrom $482Free CancellationRating
7.1
11,387 reviews
Search Air Canada flights
United AirlinesPriceFrom $482Free CancellationRating
7.4
10,040 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $502Free CancellationRating
7.4
1,903 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $506Free CancellationRating
6.7
8,132 reviews
Search British Airways flights
LufthansaPriceFrom $509Free CancellationRating
6.8
8,157 reviews
Search Lufthansa flights
KLMPriceFrom $540Free CancellationRating
7.8
1,547 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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