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$545+ Cheap flights from Denmark to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Denmark to Seattle

Keep the following information in mind while searching for Denmark to Seattle flight deals. Data was last updated July 30, 2025.

Round-trip from

$545
(Finnair)

Popular in

July

Cheapest in

February

Average price

$879

Good round-trip deal

$792 or less

Good one-way deal

$850 or less
From Denmark to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($145 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Denmark to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Denmark to Seattle/Tacoma Intl.
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Find flight deals from Denmark to Seattle

Cheapest flights from Denmark to Seattle
Explore the most affordable flight options available from Denmark to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This Finnair deal was found by Cheapflights users on 7/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/238:50 amCPH - SEA
2 stops19h 39mFinnair
Mon 10/277:50 pmSEA - CPH
2 stops20h 05mFinnair
Deal found 7/28$545
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/292:00 pmCPH - SEA
1 stop17h 26mAmerican Airlines
Fri 9/123:23 pmSEA - CPH
2 stops18h 27mAmerican Airlines
Deal found 7/29$546
This Ticket deal was found by Cheapflights users on 7/28. 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.
Fri 8/294:45 pmCPH - SEA
1 stop12h 55mIcelandair
Sun 9/143:45 pmSEA - CPH
1 stop21h 00mIcelandair
Deal found 7/28$547
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:05 amCPH - SEA
1 stop19h 54mUnited Airlines
Sun 9/147:15 amSEA - CPH
1 stop14h 55mUnited Airlines
Deal found 7/28$548
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Fri 8/296:05 amCPH - SEA
1 stop19h 54mMultiple Airlines
Fri 9/127:15 pmSEA - CPH
2 stops26h 55mMultiple Airlines
Deal found 7/29$559
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2912:25 pmCPH - SEA
2 stops34h 51mAir Canada
Sun 9/145:30 amSEA - CPH
2 stops16h 40mAir Canada
Deal found 7/28$577
This British Airways deal was found by Cheapflights users on 7/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/77:00 amCPH - SEA
1 stop13h 30mBritish Airways
Fri 9/193:00 pmSEA - CPH
2 stops33h 30mBritish Airways
Deal found 7/28$582
This Ticket deal was found by Cheapflights users on 7/29. 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.
Fri 8/291:05 pmCPH - SEA
Nonstop9h 45mScandinavian Airlines
Fri 9/124:20 pmSEA - CPH
Nonstop9h 40mScandinavian Airlines
Deal found 7/29$590
This Lufthansa deal was found by Cheapflights users on 7/28. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:10 amCPH - SEA
1 stop14h 45mLufthansa
Fri 7/101:45 pmSEA - CPH
2 stops32h 25mLufthansa
Deal found 7/28$594
This Austrian Airlines deal was found by Cheapflights users on 7/30. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/128:00 pmCPH - SEA
2 stops31h 49mAustrian Airlines
Tue 10/217:00 amSEA - CPH
2 stops30h 40mAustrian Airlines
Deal found 7/30$607
This Ticket deal was found by Cheapflights users on 7/30. 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.
Thu 8/1410:20 amAAL - SEA
1 stop14h 35mKLM
Mon 8/185:40 pmSEA - AAL
1 stop15h 00mKLM
Deal found 7/30$615
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:30 amAAL - SEA
1 stop18h 25mDelta
Mon 8/189:40 amSEA - AAL
2 stops19h 05mDelta
Deal found 7/30$629

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denmark to Seattle 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 July 30, 2025.
Use the filters below to find and compare flights from Denmark to Seattle that are best for you.

Fly from

Denmark

Fly to

Seattle

Route

Depart

Return

Price

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 10/23

8:50 am-7:29 pm

2 stops19h 39m

Seattle/Tacoma Intl

Mon 10/27

7:50 pm-11:55 pm

2 stops20h 05m

$545

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/29

2:00 pm-10:26 pm

1 stop17h 26m

Seattle/Tacoma Intl

Fri 9/12

3:23 pm-6:50 pm

2 stops18h 27m

$546

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/29

4:45 pm-8:40 pm

1 stop12h 55m

Seattle/Tacoma Intl

Sun 9/14

3:45 pm-9:45 pm

1 stop21h 00m

$547

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/29

6:05 am-4:59 pm

1 stop19h 54m

Seattle/Tacoma Intl

Sun 9/14

7:15 am-7:10 am

1 stop14h 55m

$548

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/29

6:05 am-4:59 pm

1 stop19h 54m

Seattle/Tacoma Intl

Fri 9/12

7:15 pm-7:10 am

2 stops26h 55m

$559

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/29

12:25 pm-2:16 pm

2 stops34h 51m

Seattle/Tacoma Intl

Sun 9/14

5:30 am-7:10 am

2 stops16h 40m

$577

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 9/7

7:00 am-11:30 am

1 stop13h 30m

Seattle/Tacoma Intl

Fri 9/19

3:00 pm-9:30 am

2 stops33h 30m

$582

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Fri 8/29

1:05 pm-1:50 pm

Nonstop9h 45m

Seattle/Tacoma Intl

Fri 9/12

4:20 pm-11:00 am

Nonstop9h 40m

$590

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 9/3

6:10 am-11:55 am

1 stop14h 45m

Seattle/Tacoma Intl

Mon 7/13

2:55 pm-7:10 am

2 stops31h 15m

$594

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 10/12

8:00 pm-6:49 pm

2 stops31h 49m

Seattle/Tacoma Intl

Tue 10/21

7:00 am-10:40 pm

2 stops30h 40m

$607

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 29 results
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Best time to book a flight from Denmark to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Denmark 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 Denmark to Seattle

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

Currently, January is the cheapest month in which you can book a flight from Denmark to Seattle (average of $238). Flying from Denmark to Seattle in June is currently the most expensive (average of $389). 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 DK to SEA?

Find hourly flight availability from Denmark to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denmark to Seattle as you normally would.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated July 30, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Austrian Airlines from Denmark to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
823 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Denmark to Seattle. 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 into for flights to Seattle from Denmark?

    For a flight from Denmark to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.

  • What are the cheapest airlines to fly from Denmark to Seattle one-way?

    The cheapest airlines for a one-way flight from Denmark to Seattle are Lufthansa ($566), SWISS ($578), and Icelandair ($583).

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

    Most travelers choose Kastrup Copenhagen - Seattle/Tacoma Intl, Billund - Seattle/Tacoma Intl or Aalborg - Seattle/Tacoma Intl when deciding on the best route from Denmark to Seattle.

  • What are the cheapest flights from Denmark to Seattle?

    While on average a flight from Denmark to Seattle is generally $1,169, our data shows the cheapest flight currently is $600. When looking at the most popular route, (Kastrup Copenhagen - Seattle/Tacoma Intl), you can expect to pay $502 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denmark to Seattle 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 Denmark to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Denmark to Seattle (average of $238). Flying from Denmark to Seattle in June is currently the most expensive (average of $389). 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.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
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Top 6 airlines flying from Denmark to Seattle

Discover the top 6 airlines that operate flights from Denmark to Seattle. 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$432Average$602FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$456Average$556FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$463Average$554FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$483Average$690FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$516Average$658FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$600Average$808FlexibilityNo cancel feeOn-time77%

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