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$485+ Cheap flights from Helsinki (HEL) 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SEA
Jul 17 — Jul 241
Fri 7/17
Fri 7/24
1 adult, Economy
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Find cheap flights from Helsinki to Seattle with Cheapflights

1. Tell us where you want to go

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Cheap flight deals from Helsinki to Seattle

Cheapest flights from Helsinki to Seattle
Explore the most affordable flight options available from Helsinki to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 17, 2026.

This Sembo deal was found by Cheapflights users on 6/15. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/83:00 pm
HEL
-
SEA
1 stop15h 40m
Icelandair
Sun 8/237:00 pm
SEA
-
HEL
1 stop17h 30m
Icelandair
Deal found 6/15$880
This Icelandair deal was found by Cheapflights users on 6/13. 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.
Thu 9/243:00 pm
HEL
-
SEA
1 stop15h 40m
Icelandair
Mon 9/283:40 pm
SEA
-
HEL
1 stop12h 20m
Icelandair
Deal found 6/13$883
This Gotogate deal was found by Cheapflights users on 6/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/111:30 pm
HEL
-
SEA
1 stop22h 15m
Icelandair
Sat 8/811:25 pm
SEA
-
HEL
1 stop28h 35m
Icelandair
Deal found 6/17$900
This Icelandair deal was found by Cheapflights users on 6/15. 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.
Fri 10/23:00 pm
HEL
-
SEA
1 stop12h 55m
Icelandair
Mon 10/53:40 pm
SEA
-
HEL
1 stop12h 20m
Icelandair
Deal found 6/15$905
This Delta deal was found by Cheapflights users on 6/15. 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.
Tue 8/111:55 pm
HEL
-
SEA
1 stop31h 42m
Delta
Mon 8/246:40 pm
SEA
-
HEL
1 stop36h 00m
Delta
Deal found 6/15$919
This Delta deal was found by Cheapflights users on 6/15. 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.
Tue 8/111:55 pm
HEL
-
SEA
1 stop31h 42m
Delta
Tue 8/259:35 am
SEA
-
HEL
2 stops17h 30m
Delta
Deal found 6/15$923
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Sat 8/83:00 pm
HEL
-
SEA
1 stop15h 40m
Icelandair
Sat 8/223:40 pm
SEA
-
HEL
1 stop12h 20m
Icelandair
Deal found 6/15$929
This Turkish Airlines deal was found by Cheapflights users on 6/14. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:05 pm
HEL
-
SEA
1 stop39h 15m
Turkish Airlines
Mon 9/287:15 pm
SEA
-
HEL
1 stop29h 55m
Turkish Airlines
Deal found 6/14$933
This Icelandair deal was found by Cheapflights users on 6/15. 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.
Wed 8/53:00 pm
HEL
-
SEA
1 stop12h 55m
Icelandair
Thu 8/203:40 pm
SEA
-
HEL
1 stop12h 20m
Icelandair
Deal found 6/15$935
This Icelandair deal was found by Cheapflights users on 6/15. 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.
Wed 8/53:00 pm
HEL
-
SEA
1 stop12h 55m
Icelandair
Mon 8/2411:25 pm
SEA
-
HEL
1 stop28h 35m
Icelandair
Deal found 6/15$937
This Delta deal was found by Cheapflights users on 6/15. 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.
Tue 8/111:55 pm
HEL
-
SEA
1 stop31h 42m
Delta
Wed 8/266:35 pm
SEA
-
HEL
2 stops32h 30m
Delta
Deal found 6/15$940
This Delta deal was found by Cheapflights users on 6/15. 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.
Tue 8/111:55 pm
HEL
-
SEA
1 stop31h 42m
Delta
Sun 8/239:45 pm
SEA
-
HEL
2 stops26h 50m
Delta
Deal found 6/15$943

Find flight deals from Helsinki to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Helsinki (HEL) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$880
(Sembo)

One-way from

$485
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$1,003
Provider with most accurate pricing for Helsinki-Vantaa-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helsinki-Vantaa-Seattle/Tacoma Intl flights.
Search Deals
From Helsinki-Vantaa to Seattle/Tacoma Intl
Search Deals
One-way flight from Helsinki-Vantaa to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($123 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Helsinki 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 June 17, 2026.
Use the filters below to find and compare flights from Helsinki to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 9/24

3:00 pm-8:40 pm

1 stop15h 40m

Seattle/Tacoma Intl

Mon 9/28

3:40 pm-2:00 pm

1 stop12h 20m

$883

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 8/6

3:00 pm-8:40 pm

1 stop15h 40m

Seattle/Tacoma Intl

Sat 8/22

3:40 pm-2:00 pm

1 stop12h 20m

$935

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 8/9

3:00 pm-11:45 am

1 stop30h 45m

Seattle/Tacoma Intl

Sun 8/23

7:00 pm-10:30 pm

1 stop17h 30m

$952

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 9/24

12:20 pm-9:52 pm

1 stop19h 32m

Seattle/Tacoma Intl

Mon 9/28

5:40 pm-1:10 pm

Nonstop9h 30m

$953

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 10/2

6:10 am-1:45 pm

1 stop17h 35m

Seattle/Tacoma Intl

Mon 10/5

11:00 am-1:30 am

2 stops28h 30m

$972

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 7/13

11:30 pm-10:07 am

3 stops44h 37m

Seattle/Tacoma Intl

Mon 7/20

10:45 am-6:20 pm

3 stops21h 35m

$974
Cheapest one-way

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 10/5

9:20 pm-5:10 pm

3 stops29h 50m

$591

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Tue 7/21

11:50 pm-11:45 am

2 stops45h 55m

$660

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 6/28

7:30 pm-9:00 pm

3 stops59h 30m

$660

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 7/10

7:40 am-9:00 pm

3 stops47h 20m

$684

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/13

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Helsinki to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Helsinki to Seattle in June.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Helsinki-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helsinki-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Helsinki-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Helsinki-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Helsinki-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Helsinki to Seattle

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

How far ahead should I book a flight from Helsinki to Seattle?

Booking 18 days in advance of your planned departure date is, on average, the best time to get cheap flights from Helsinki to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Helsinki to Seattle (average of $831). Flying from Helsinki to Seattle in July is currently the most expensive (average of $1,180). 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 HEL to SEA?

Find hourly flight availability from Helsinki 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 June 17, 2026.

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

How much does it cost to fly round-trip from Helsinki to Seattle?

Related info for your journey

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

  • How long is the flight from Helsinki to Seattle?

    Departing from Helsinki to Seattle will take you 15h 40m. Helsinki and Seattle are separated by a distance of 4764 mi. This flight may include one or multiple stops.

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

    Before booking your flight to Seattle from Helsinki, check out the most reliable airlines to get you to your destination on time: American Airlines (33%), Alaska Airlines (33%), Finnair( 33%).

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Helsinki to Seattle (average of $831). Flying from Helsinki to Seattle in July is currently the most expensive (average of $1,180). 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
SeaTac
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Marysville

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Alternative routes for Helsinki to Seattle

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