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Cheap flights from Seattle to Denmark from $283

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 3/31. 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 - 5:20 am
SEA
-
CPH
29h 45m
1 stop
Icelandair Logo
12:55 pm - 5:00 pm
CPH
-
SEA
13h 05m
1 stop
$414Icelandair
Mon, Jan 26 - Tue, Feb 10
Icelandair Logo
2:35 pm - 12:30 pm
SEA
-
CPH
12h 55m
1 stop
Icelandair Logo
12:55 pm - 5:00 pm
CPH
-
SEA
13h 05m
1 stop
$416Icelandair
Fri, Feb 27 - Fri, Mar 6
British Airways Logo
6:50 pm - 12:20 pm
SEA
-
BLL
32h 30m
1 stop
British Airways Logo
8:45 pm - 11:30 am
BLL
-
SEA
23h 45m
1 stop
$478British Airways
Sun, Feb 15 - Mon, Feb 23
British Airways Logo
1:37 pm - 12:05 pm
SEA
-
BLL
37h 28m
2 stops
British Airways Logo
1:10 pm - 11:04 pm
BLL
-
SEA
18h 54m
2 stops
$492British Airways
Wed, Feb 18 - Tue, Feb 24
United Airlines Logo
12:35 pm - 1:40 pm
SEA
-
BLL
40h 05m
2 stops
United Airlines Logo
6:30 am - 12:10 pm
BLL
-
SEA
14h 40m
1 stop
$505United Airlines
Mon, Jan 26 - Thu, Jan 29
United Airlines Logo
12:35 pm - 1:30 pm
SEA
-
BLL
39h 55m
2 stops
United Airlines Logo
6:30 am - 11:41 am
BLL
-
SEA
38h 11m
2 stops
$509United Airlines
Sat, Jan 24 - Tue, Jan 27
Delta Logo
1:40 pm - 2:35 pm
SEA
-
BLL
15h 55m
1 stop
Delta Logo
6:30 am - 11:25 am
BLL
-
SEA
13h 55m
1 stop
$510Delta
Tue, Feb 17 - Tue, Feb 24
Delta Logo
9:50 am - 1:45 pm
SEA
-
AAL
18h 55m
2 stops
Delta Logo
6:00 am - 11:35 am
AAL
-
SEA
14h 35m
1 stop
$588Delta
Sat, Feb 28 - Sat, Mar 7
Scandinavian Airlines Logo
12:00 pm - 12:10 pm
SEA
-
AAL
39h 10m
2 stops
Scandinavian Airlines Logo
12:40 pm - 1:45 pm
AAL
-
SEA
34h 05m
1 stop
$724Scandinavian Airlines
Sat, May 16 - Mon, May 25
Scandinavian Airlines Logo
2:00 pm - 9:45 am
SEA
-
AAR
34h 45m
2 stops
Scandinavian Airlines Logo
6:20 am - 10:10 pm
AAR
-
SEA
23h 50m
2 stops
$822Scandinavian Airlines
Thu, Mar 5 - Mon, Mar 9

Lufthansa flights from Seattle to Denmark

Our best Lufthansa deals on Seattle to Denmark flight tickets
Lufthansa
Feb 22
SEA3:40 pmSeattle/Tacoma Intl
35h 20m
2 stops
CPH12:00 pmKastrup Copenhagen
Feb 25
CPH8:55 amKastrup Copenhagen
13h 25m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$461
Lufthansa
Jan 21
SEA7:00 amSeattle/Tacoma Intl
21h 25m
2 stops
BLL1:25 pmBillund
Jan 23
BLL6:30 amBillund
21h 46m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$480
Lufthansa
Feb 22
SEA3:10 pmSeattle/Tacoma Intl
17h 25m
1 stop
CPH5:35 pmKastrup Copenhagen
Feb 25
CPH8:55 amKastrup Copenhagen
13h 25m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$500

British Airways flights from Seattle to Denmark

Our best British Airways deals on Seattle to Denmark flight tickets
British Airways
Feb 10
SEA5:45 pmSeattle/Tacoma Intl
19h 00m
2 stops
CPH9:45 pmKastrup Copenhagen
Feb 18
CPH12:15 pmKastrup Copenhagen
13h 40m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$470
British Airways
Feb 10
SEA5:45 pmSeattle/Tacoma Intl
19h 00m
2 stops
CPH9:45 pmKastrup Copenhagen
Feb 18
CPH10:30 amKastrup Copenhagen
21h 37m
2 stops
SEA11:07 pmSeattle/Tacoma Intl
$473
British Airways
Apr 6
SEA7:21 amSeattle/Tacoma Intl
24h 34m
2 stops
CPH4:55 pmKastrup Copenhagen
Apr 13
CPH9:45 pmKastrup Copenhagen
22h 50m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$474

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 January 14, 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

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 1/26

2:35 pm-5:20 am

1 stop29h 45m

Kastrup Copenhagen

Tue 2/10

12:55 pm-5:00 pm

1 stop13h 05m

$414

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 2/27

2:35 pm-12:30 pm

1 stop12h 55m

Kastrup Copenhagen

Fri 3/6

12:55 pm-5:00 pm

1 stop13h 05m

$416

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sun 2/15

6:50 pm-12:20 pm

1 stop32h 30m

Billund

Mon 2/23

8:45 pm-11:30 am

1 stop23h 45m

$478

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Wed 2/18

1:37 pm-12:05 pm

2 stops37h 28m

Billund

Tue 2/24

1:10 pm-11:04 pm

2 stops18h 54m

$492

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Mon 1/26

12:35 pm-1:40 pm

2 stops40h 05m

Billund

Thu 1/29

6:30 am-12:10 pm

1 stop14h 40m

$505

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Sat 1/24

12:35 pm-1:30 pm

2 stops39h 55m

Billund

Tue 1/27

6:30 am-11:41 am

2 stops38h 11m

$509

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Tue 2/17

1:40 pm-2:35 pm

1 stop15h 55m

Billund

Tue 2/24

6:30 am-11:25 am

1 stop13h 55m

$510

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Sat 2/28

9:50 am-1:45 pm

2 stops18h 55m

Aalborg

Sat 3/7

6:00 am-11:35 am

1 stop14h 35m

$588

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Sat 5/16

12:00 pm-12:10 pm

2 stops39h 10m

Aalborg

Mon 5/25

12:40 pm-1:45 pm

1 stop34h 05m

$724

SeattleAarhus

SEA - AAR

SEAAAR

Seattle/Tacoma Intl

Thu 3/5

2:00 pm-9:45 am

2 stops34h 45m

Aarhus

Mon 3/9

6:20 am-10:10 pm

2 stops23h 50m

$822

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, October 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 $514. If you aren’t able to travel to Denmark during the month of October, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $536.

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 $650. 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 $740.

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 $607 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 46% 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

$472

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 $472. The best round-trip flight deal from Seattle to Denmark found on momondo in the last 72 hours is $511.
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

  • 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
1,522 reviews
Search Air France flights
IcelandairPriceFrom $422Free CancellationRating
7.1
596 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $497Free CancellationRating
7.3
1,649 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $512Free CancellationRating
6.7
7,671 reviews
Search British Airways flights
United AirlinesPriceFrom $535Free CancellationRating
7.4
9,156 reviews
Search United Airlines flights
LufthansaPriceFrom $535Free CancellationRating
6.8
7,711 reviews
Search Lufthansa flights
Air CanadaPriceFrom $536Free CancellationRating
7.1
10,619 reviews
Search Air Canada flights
KLMPriceFrom $540Free CancellationRating
7.7
1,437 reviews
Search KLM flights
DeltaPriceFrom $541Free CancellationRating
7.9
8,040 reviews
Search Delta flights
FinnairPriceFrom $580Free CancellationRating
7.6
1,348 reviews
Search Finnair 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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