HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$342+ Cheap flights from Denmark to Seattle (SEA)

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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
CPH — SEA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denmark to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 December 18, 2025.

This KLM deal was found by Cheapflights users on 12/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:25 pmCPH - SEA
1 stop25h 25mMultiple Airlines
Thu 1/151:40 pmSEA - CPH
1 stop16h 00mMultiple Airlines
Deal found 12/16$804
This Delta deal was found by Cheapflights users on 12/16. 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.
Mon 12/222:15 pmCPH - SEA
1 stop30h 35mDelta
Wed 1/147:10 amSEA - CPH
2 stops19h 05mDelta
Deal found 12/16$811
This KLM deal was found by Cheapflights users on 12/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:25 pmCPH - SEA
1 stop25h 25mMultiple Airlines
Tue 1/131:40 pmSEA - CPH
1 stop18h 20mMultiple Airlines
Deal found 12/17$816
This Delta deal was found by Cheapflights users on 12/16. 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.
Mon 12/226:00 amCPH - SEA
2 stops23h 44mDelta
Thu 1/159:25 amSEA - CPH
2 stops20h 15mDelta
Deal found 12/16$834
This Delta deal was found by Cheapflights users on 12/17. 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.
Mon 12/222:15 pmCPH - SEA
1 stop30h 35mDelta
Fri 1/167:40 amSEA - CPH
2 stops20h 30mDelta
Deal found 12/17$835
This Delta deal was found by Cheapflights users on 12/17. 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.
Mon 12/222:15 pmCPH - SEA
1 stop30h 35mDelta
Tue 1/131:40 pmSEA - CPH
1 stop16h 00mDelta
Deal found 12/17$839
This Delta deal was found by Cheapflights users on 12/17. 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.
Mon 12/222:15 pmCPH - SEA
1 stop30h 35mDelta
Sat 1/173:10 pmSEA - CPH
1 stop16h 25mDelta
Deal found 12/17$845
This Delta deal was found by Cheapflights users on 12/16. 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.
Mon 12/222:15 pmCPH - SEA
1 stop30h 35mDelta
Mon 1/127:10 amSEA - CPH
2 stops16h 50mDelta
Deal found 12/16$846

Find flight deals from Denmark to Seattle

Keep the following information in mind while searching for Denmark to Seattle flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$548
(Mytrip)

One-way from

$342
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$762
Provider with most accurate pricing for Kastrup Copenhagen-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Kastrup Copenhagen-Seattle/Tacoma Intl flights.
Search Deals
From Denmark to Seattle/Tacoma Intl
Search Deals
One-way flight from Denmark to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($139 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

BillundSeattle

BLL - SEA

BLLSEA

Billund

Fri 1/30

12:55 pm-4:55 pm

1 stop13h 00m

Seattle/Tacoma Intl

Tue 2/3

1:25 pm-12:30 pm

1 stop14h 05m

$548

BillundSeattle

BLL - SEA

BLLSEA

Billund

Tue 4/28

10:40 am-6:25 pm

1 stop16h 45m

Seattle/Tacoma Intl

Tue 5/5

1:35 pm-11:15 am

1 stop12h 40m

$553

BillundSeattle

BLL - SEA

BLLSEA

Billund

Fri 1/30

12:55 pm-4:55 pm

1 stop13h 00m

Seattle/Tacoma Intl

Tue 2/3

8:04 am-12:30 pm

2 stops19h 26m

$566

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Mon 1/12

6:35 pm-11:30 am

1 stop25h 55m

Seattle/Tacoma Intl

Sun 1/25

10:50 am-2:20 pm

2 stops18h 30m

$567

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 1/22

12:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Mon 2/16

2:35 pm-11:45 am

1 stop12h 10m

$573

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 1/22

12:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 2/17

2:35 pm-11:45 am

1 stop12h 10m

$573

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 3/4

12:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sun 3/8

3:00 pm-7:50 pm

1 stop20h 50m

$573

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Sun 1/25

8:40 am-7:18 pm

2 stops19h 38m

Seattle/Tacoma Intl

Mon 2/9

6:50 pm-7:05 pm

1 stop15h 15m

$574

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Wed 3/4

12:15 pm-4:55 pm

1 stop13h 40m

Seattle/Tacoma Intl

Sun 3/8

1:37 pm-5:40 pm

2 stops20h 03m

$575

CopenhagenSeattle

CPH - SEA

CPHSEA

Kastrup Copenhagen

Thu 1/22

7:50 pm-11:30 am

1 stop24h 40m

Seattle/Tacoma Intl

Sun 2/15

6:50 pm-9:45 pm

1 stop17h 55m

$580

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 21 results
1
2
3

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, February is the cheapest month in which you can book a flight from Denmark to Seattle (average of $402). Flying from Denmark to Seattle in July is currently the most expensive (average of $599). 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 December 18, 2025.

It’s optimal to fly from Denmark to Seattle in the evening. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight at noon.

How often are flights from Denmark to Seattle delayed?

About 11% of weekly flights between Denmark and Seattle have experienced delays in the past year, with the average delay time being 127 minutes.

What is the most punctual flight time for Denmark to Seattle flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Denmark to Seattle flights?

Over the last year, Scandinavian Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

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 December 18, 2025.
Peruse reviews from past customers who have flown with Scandinavian Airlines, United Airlines, and Icelandair 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.
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Scandinavian Airlines
7.4
Good
1,606 reviews
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
United Airlines
7.4
Good
9,091 reviews
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Icelandair
7.0
Good
591 reviews
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Lufthansa
6.8
Okay
7,634 reviews
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
British Airways
6.7
Okay
7,585 reviews
Scandinavian Airlines
7.4
Good
1,606 reviews

Entertainment

6.7

Food

6.7

Boarding

7.6

Comfort

7.3

Crew

8.0

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

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.

  • How long is the flight from Denmark to Seattle?

    British Airways, Icelandair, and Scandinavian Airlines can get you from Denmark to Seattle in just under 13h. Your travel time can differ by up to 8h 37m. There are 4771 mi between Denmark and Seattle. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 British Airways ($381), Finnair ($399), and Icelandair ($425).

  • 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 most reliable airlines from Denmark to Seattle?

    No one likes to see their flight delayed. When booking a flight from Denmark to Seattle consider choosing Air France (50%), Scandinavian Airlines (50%) or Delta (50%) as they are the most reliable in getting you off to your destination on time.

  • 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, February is the cheapest month in which you can book a flight from Denmark to Seattle (average of $402). Flying from Denmark to Seattle in July is currently the most expensive (average of $599). 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
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Denmark to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Frankfurt to Seattle flights
Charles de Gaulle to Seattle flights
Heathrow to Seattle flights
Bruxelles-National to Seattle flights
Orly to Seattle flights
Duesseldorf Intl to Seattle flights
Gatwick to Seattle flights
Istanbul to Seattle flights
Munich to Seattle flights
Amsterdam to Seattle flights
Dublin to Seattle flights
Heathrow to Portland flights
Madrid to Seattle flights
Frankfurt-Hahn to Seattle flights
Stansted to Seattle flights
Berlin to Seattle flights
Frederic Chopin to Seattle flights
Malpensa to Seattle flights
Oslo Gardermoen to Seattle flights
Amsterdam to Portland flights
Frankfurt to Portland flights
Luton to Seattle flights
Lyon to Seattle flights
Vienna to Seattle flights
Barcelona-El Prat to Seattle flights
Charles de Gaulle to Portland flights
Zurich to Seattle flights
Gatwick to Portland flights
Hamburg to Seattle flights
Leonardo da Vinci/Fiumicino to Seattle flights
Sabiha Gokcen to Seattle flights
Vicenza to Seattle flights
Otopeni Intl to Seattle flights
Toulouse to Seattle flights
Bremen to Seattle flights
Copenhagen to Seattle flights
Hannover to Seattle flights
Linate to Seattle flights
Manchester to Seattle flights
Sofia to Seattle flights
Vicenza to Portland flights
Luxembourg to Seattle flights
Prague to Seattle flights
Split to Portland flights
Manchester to Portland flights
Bergamo to Seattle flights

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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$317Average$690FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$430Average$587FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$462Average$556FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$470Average$495FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$567Average$682FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$600Average$808FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.