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Cheap flights from Seattle to Denmark from $271

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 5/10. 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
7:00 pm - 11:45 pm
SEA
-
CPH
19h 45m1 stop
Icelandair Logo
2:00 pm - 8:40 pm
CPH
-
SEA
15h 40m1 stop
$498Icelandair
Fri, May 1 - Fri, May 8
British Airways Logo
1:35 pm - 11:20 am
SEA
-
CPH
12h 45m1 stop
British Airways Logo
3:10 pm - 5:55 pm
CPH
-
SEA
34h 45m1 stop
$499British Airways
Fri, Mar 6 - Wed, Mar 11
Multiple Airlines Logo
6:50 pm - 6:40 pm
SEA
-
CPH
14h 50m1 stop
Multiple Airlines Logo
12:45 pm - 9:51 pm
CPH
-
SEA
18h 06m1 stop
$501Multiple Airlines
Wed, Apr 1 - Wed, Apr 15
United Airlines Logo
6:50 pm - 4:25 pm
SEA
-
CPH
12h 35m1 stop
United Airlines Logo
12:45 pm - 4:25 pm
CPH
-
SEA
36h 40m2 stops
$508United Airlines
Sun, Apr 5 - Tue, Apr 14
KLM Logo
3:10 pm - 5:35 pm
SEA
-
AAL
17h 25m1 stop
KLM Logo
2:20 pm - 11:40 am
AAL
-
SEA
30h 20m1 stop
$525KLM
Thu, Jan 29 - Thu, Feb 5
KLM Logo
11:25 am - 1:45 pm
SEA
-
AAL
17h 20m2 stops
KLM Logo
2:20 pm - 11:40 am
AAL
-
SEA
30h 20m1 stop
$530KLM
Thu, Jan 29 - Thu, Feb 5
Delta Logo
5:25 am - 1:30 pm
SEA
-
BLL
23h 05m2 stops
Delta Logo
6:00 am - 11:19 am
BLL
-
SEA
38h 19m2 stops
$536Delta
Thu, Jan 15 - Mon, Jan 19
United Airlines Logo
2:10 pm - 6:10 pm
SEA
-
BLL
19h 00m1 stop
United Airlines Logo
5:55 am - 12:20 pm
BLL
-
SEA
15h 25m1 stop
$537United Airlines
Tue, Apr 28 - Sat, May 2
Scandinavian Airlines Logo
11:30 am - 2:00 pm
SEA
-
AAL
17h 30m2 stops
Scandinavian Airlines Logo
2:35 pm - 11:22 pm
AAL
-
SEA
41h 47m2 stops
$627Scandinavian Airlines
Fri, Jan 30 - Tue, Feb 3
Scandinavian Airlines Logo
2:02 pm - 9:45 am
SEA
-
AAR
34h 43m2 stops
Scandinavian Airlines Logo
2:30 pm - 11:22 pm
AAR
-
SEA
41h 52m2 stops
$658Scandinavian Airlines
Fri, Jan 30 - Tue, Feb 3

Icelandair flights from Seattle to Denmark

Our best Icelandair deals on Seattle to Denmark flight tickets
Icelandair
May 1
SEA7:00 pmSeattle/Tacoma Intl
19h 45m
1 stop
CPH11:45 pmKastrup Copenhagen
May 8
CPH2:00 pmKastrup Copenhagen
15h 40m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$498
Find similar
Icelandair
Apr 16
SEA3:40 pmSeattle/Tacoma Intl
15h 35m
1 stop
CPH4:15 pmKastrup Copenhagen
Apr 23
CPH5:15 pmKastrup Copenhagen
12h 25m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$509
Find similar
Icelandair
Apr 16
SEA3:40 pmSeattle/Tacoma Intl
12h 15m
1 stop
CPH12:55 pmKastrup Copenhagen
Apr 26
CPH2:00 pmKastrup Copenhagen
15h 40m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$511
Find similar

United Airlines flights from Seattle to Denmark

Our best United Airlines deals on Seattle to Denmark flight tickets
United Airlines
Apr 5
SEA6:50 pmSeattle/Tacoma Intl
12h 35m
1 stop
CPH4:25 pmKastrup Copenhagen
Apr 14
CPH12:45 pmKastrup Copenhagen
36h 40m
2 stops
SEA4:25 pmSeattle/Tacoma Intl
$508
Find similar
United Airlines
Apr 2
SEA2:16 pmSeattle/Tacoma Intl
19h 24m
2 stops
CPH6:40 pmKastrup Copenhagen
Apr 14
CPH12:45 pmKastrup Copenhagen
36h 40m
2 stops
SEA4:25 pmSeattle/Tacoma Intl
$513
Find similar
United Airlines
Apr 6
SEA11:05 pmSeattle/Tacoma Intl
26h 45m
2 stops
CPH10:50 amKastrup Copenhagen
Apr 13
CPH6:40 amKastrup Copenhagen
14h 40m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$525
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 December 16, 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

Fri 5/1

7:00 pm-11:45 pm

1 stop19h 45m

Kastrup Copenhagen

Fri 5/8

2:00 pm-8:40 pm

1 stop15h 40m

$498

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Fri 3/6

1:35 pm-11:20 am

1 stop12h 45m

Kastrup Copenhagen

Wed 3/11

3:10 pm-5:55 pm

1 stop34h 45m

$499

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 4/1

6:50 pm-6:40 pm

1 stop14h 50m

Kastrup Copenhagen

Wed 4/15

12:45 pm-9:51 pm

1 stop18h 06m

$501

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Sun 4/5

6:50 pm-4:25 pm

1 stop12h 35m

Kastrup Copenhagen

Tue 4/14

12:45 pm-4:25 pm

2 stops36h 40m

$508

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Thu 1/29

3:10 pm-5:35 pm

1 stop17h 25m

Aalborg

Thu 2/5

2:20 pm-11:40 am

1 stop30h 20m

$525

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Thu 1/29

11:25 am-1:45 pm

2 stops17h 20m

Aalborg

Thu 2/5

2:20 pm-11:40 am

1 stop30h 20m

$530

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Thu 1/15

5:25 am-1:30 pm

2 stops23h 05m

Billund

Mon 1/19

6:00 am-11:19 am

2 stops38h 19m

$536

SeattleBillund

SEA - BLL

SEABLL

Seattle/Tacoma Intl

Tue 4/28

2:10 pm-6:10 pm

1 stop19h 00m

Billund

Sat 5/2

5:55 am-12:20 pm

1 stop15h 25m

$537

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Fri 1/30

11:30 am-2:00 pm

2 stops17h 30m

Aalborg

Tue 2/3

2:35 pm-11:22 pm

2 stops41h 47m

$627

SeattleAarhus

SEA - AAR

SEAAAR

Seattle/Tacoma Intl

Fri 1/30

2:02 pm-9:45 am

2 stops34h 43m

Aarhus

Tue 2/3

2:30 pm-11:22 pm

2 stops41h 52m

$658

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 $523. If you aren’t able to travel to Denmark during the month of October, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $545.

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 $646. 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 $742.

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 $625 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 $598 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 51% 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

$407

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 $407. The best round-trip flight deal from Seattle to Denmark found on momondo in the last 72 hours is $617.
The fastest flight from Seattle to Denmark takes 9h 15m
Direct flights go from Seattle to Denmark on Monday, Wednesday, Saturday and Sunday. The only airline offering direct flights is Scandinavian Airlines.
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
1,506 reviews
Search Air France flights
DeltaPriceFrom $421Free CancellationRating
7.9
8,008 reviews
Search Delta flights
IcelandairPriceFrom $423Free CancellationRating
7.0
591 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $498Free CancellationRating
7.4
1,606 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $535Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
LufthansaPriceFrom $535Free CancellationRating
6.8
7,632 reviews
Search Lufthansa flights
Air CanadaPriceFrom $536Free CancellationRating
7.1
10,531 reviews
Search Air Canada flights
KLMPriceFrom $540Free CancellationRating
7.7
1,430 reviews
Search KLM flights
British AirwaysPriceFrom $544Free CancellationRating
6.7
7,583 reviews
Search British Airways flights
FinnairPriceFrom $580Free CancellationRating
7.6
1,337 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.

An easier way to manage your Denmark trip

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Find better results for your trip to Denmark

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