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Denmark

$299+ Cheap flights from Seattle (SEA) to Denmark

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CPH
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Seattle to Denmark

Keep the following information in mind while searching for Seattle to Denmark flight deals. Data was last updated October 29, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$423
(FlightHub)

One-way from

$299
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$617

Good round-trip deal

$533 or less

Good one-way deal

$456 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Kastrup Copenhagen flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Kastrup Copenhagen flights.
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From Seattle/Tacoma Intl to Denmark
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One-way flight from Seattle/Tacoma Intl to Denmark
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Highest demand for flights based on searches. 10% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Denmark.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Denmark.
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Find flight deals from Seattle to Denmark

Cheapest flights from Seattle to Denmark
Explore the most affordable flight options available from Seattle to Denmark. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Icelandair deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/102:35 pmSEA - CPH
1 stop12h 10mIcelandair
Fri 11/141:05 pmCPH - SEA
1 stop12h 55mIcelandair
Deal found 10/28$445
This Ticket deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2410:53 amSEA - CPH
2 stops18h 07mMultiple Airlines
Sun 12/78:55 amCPH - SEA
1 stop13h 25mMultiple Airlines
Deal found 10/28$455
This Scandinavian Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:35 amSEA - CPH
1 stop14h 25mScandinavian Airlines
Tue 1/1312:50 pmCPH - SEA
2 stops42h 35mScandinavian Airlines
Deal found 10/28$472
This oojo deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:35 pmSEA - CPH
1 stop21h 00mIcelandair
Sun 1/116:15 amCPH - SEA
1 stop19h 45mIcelandair
Deal found 10/28$492
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/112:35 pmSEA - CPH
1 stop12h 25mIcelandair
Thu 12/1812:55 pmCPH - SEA
1 stop13h 05mIcelandair
Deal found 10/26$496
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/93:10 pmSEA - CPH
1 stop17h 25mLufthansa
Sat 11/151:10 pmCPH - SEA
1 stop33h 10mLufthansa
Deal found 10/27$502
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/42:00 pmSEA - CPH
1 stop14h 35mLufthansa
Tue 11/116:50 amCPH - SEA
1 stop14h 20mLufthansa
Deal found 10/28$503
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/112:00 pmSEA - CPH
1 stop13h 15mLufthansa
Sat 11/156:50 amCPH - SEA
1 stop14h 20mLufthansa
Deal found 10/26$504
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/910:05 amSEA - CPH
2 stops22h 30mMultiple Airlines
Mon 11/246:55 amCPH - SEA
1 stop14h 15mMultiple Airlines
Deal found 10/28$505
This Gotogate deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/910:05 amSEA - CPH
2 stops22h 30mAir Canada
Mon 11/2410:10 amCPH - SEA
2 stops21h 06mAir Canada
Deal found 10/28$506
This Cheapflightsfares deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:53 amSEA - BLL
2 stops27h 27mLufthansa
Thu 12/46:30 amBLL - SEA
2 stops21h 46mLufthansa
Deal found 10/28$533
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/811:30 pmSEA - BLL
2 stops25h 30mUnited Airlines
Sat 11/156:45 amBLL - SEA
1 stop14h 25mUnited Airlines
Deal found 10/27$537

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Seattle to Denmark that are best for you.

Fly from

Seattle

Fly to

Denmark

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

1:05 pm-5:00 pm

1 stop12h 55m

$445

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Mon 3/30

7:00 pm-4:15 pm

1 stop12h 15m

Kastrup Copenhagen

Wed 4/29

2:00 pm-5:50 pm

1 stop12h 50m

$446

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Tue 3/10

3:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

Sun 3/15

6:15 am-6:00 pm

1 stop19h 45m

$446

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

Fri 4/3

7:00 pm-12:55 pm

1 stop32h 55m

Kastrup Copenhagen

Sat 4/11

5:15 pm-5:50 pm

1 stop33h 35m

$505

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Thu 12/25

2:35 pm-11:45 am

1 stop12h 10m

Kastrup Copenhagen

Sun 1/11

6:15 am-5:00 pm

1 stop19h 45m

$508

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Wed 1/14

7:10 am-2:00 pm

2 stops21h 50m

Aalborg

Thu 1/22

9:50 am-10:13 pm

2 stops21h 23m

$509

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 3/18

7:50 pm-7:00 pm

1 stop15h 10m

Kastrup Copenhagen

Wed 3/25

12:15 pm-12:49 am

2 stops20h 34m

$517

SeattleCopenhagen

SEA - CPH

SEACPH

Seattle/Tacoma Intl

Wed 3/18

10:01 am-12:15 pm

2 stops18h 14m

Kastrup Copenhagen

Wed 3/25

8:40 am-9:10 pm

2 stops20h 30m

$522

SeattleAalborg

SEA - AAL

SEAAAL

Seattle/Tacoma Intl

Wed 1/14

3:10 pm-1:45 pm

1 stop13h 35m

Aalborg

Thu 1/22

6:00 am-11:50 am

1 stop14h 50m

$524

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 30 results
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Best time to book a flight from Seattle to Denmark

Have a flexible travel schedule? Discover the best time to fly to Denmark from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Denmark

What is the cheapest month to book a flight from Seattle to Denmark?

Currently, December is the cheapest month in which you can book a flight from Seattle to Denmark (average of $332). Flying from Seattle to Denmark in June is currently the most expensive (average of $552). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to DK?

Find hourly flight availability from Seattle to Denmark. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

It’s optimal to fly from Seattle to Denmark in the evening. By choosing this option you can save up to 12% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Seattle to Denmark?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Denmark. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Denmark flight should consider departing on Monday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Denmark

Get insights into the airlines that provide service to Denmark. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denmark. Reviews last updated October 29, 2025.
See what other customers who have flown with Delta, Scandinavian Airlines, and Icelandair from Seattle to Denmark have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,992 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Scandinavian Airlines
7.4
Good
1,545 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Icelandair
7.1
Good
562 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Lufthansa
6.8
Okay
7,541 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
British Airways
6.7
Okay
7,485 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Denmark. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Denmark?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Denmark. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • How popular is this Seattle to Denmark flight route?

    This flight path from Seattle/Tacoma Intl to Denmark was viewed by 8 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Denmark?

    Airlines like Icelandair, Scandinavian Airlines, and KLM fly from Seattle to Denmark in about 12h 10m. The time it takes to get you to your destination can typically vary by up to 2h 15m. There are 4850 mi between Seattle and Denmark. This flight may include one or multiple stops.

  • What are the most popular routes from Seattle to Denmark?

    When deciding which route to take from Seattle to Denmark consider Seattle/Tacoma Intl - Kastrup Copenhagen, Seattle/Tacoma Intl - Billund or Seattle/Tacoma Intl - Aalborg as they are the most popular.

  • What are the most reliable airlines from Seattle to Denmark?

    The top 3 most reliable airlines when flying from Seattle to Denmark are Air France (89%), Scandinavian Airlines (70%) and Delta (70%).

  • What are the cheapest flights from Seattle to Denmark?

    On average you can expect to pay $1,798 for a flight from Seattle to Denmark. The cheapest flight overall is $379 while the most popular route, (Seattle/Tacoma Intl - Kastrup Copenhagen) is currently priced at $367.

  • Can I find deals for flights from Seattle to Denmark that include hotel bookings?

    Yes. In addition to deals on Seattle to Denmark flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Denmark?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Denmark.

  • Can I find deals for business class flights from Seattle to Denmark?

    Yes. Cheapflights offers flight deals from Seattle to Denmark by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Denmark?

    Currently, December is the cheapest month in which you can book a flight from Seattle to Denmark (average of $332). Flying from Seattle to Denmark in June is currently the most expensive (average of $552). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 10 airlines flying from Seattle to Denmark

Discover the top 10 airlines that operate flights from Seattle to Denmark. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$418Average$619FlexibilityNo cancel feeOn-time77%
DeltaCheapest$421Average$774FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$423Average$582FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$492Average$601FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$493Average$714FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$496Average$722FlexibilityNo cancel feeOn-time77%
FinnairCheapest$504Average$715FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$536Average$683FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$560Average$804FlexibilityNo cancel feeOn-time69%
KLMCheapest$582Average$696FlexibilityNo cancel feeOn-time75%

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