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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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SEA
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
1 adult, Economy
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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 July 29, 2026.

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 9/118:30 am
HEL
-
SEA
2 stops15h 15m
Multiple Airlines
Fri 9/253:55 pm
SEA
-
HEL
2 stops16h 25m
Multiple Airlines
Deal found 7/28$629
This Trip.com deal was found by Cheapflights users on 7/24. 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.
Thu 9/38:30 am
HEL
-
SEA
2 stops19h 25m
Multiple Airlines
Mon 9/73:40 pm
SEA
-
HEL
2 stops19h 40m
Multiple Airlines
Deal found 7/24$640
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 9/118:30 am
HEL
-
SEA
2 stops15h 15m
Multiple Airlines
Fri 9/183:55 pm
SEA
-
HEL
2 stops16h 25m
Multiple Airlines
Deal found 7/28$652
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 9/48:30 am
HEL
-
SEA
2 stops15h 15m
Multiple Airlines
Fri 9/183:55 pm
SEA
-
HEL
2 stops16h 25m
Multiple Airlines
Deal found 7/28$653
This Mytrip deal was found by Cheapflights users on 7/25. 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 8/287:05 am
HEL
-
SEA
2 stops23h 35m
Multiple Airlines
Fri 9/113:40 pm
SEA
-
HEL
2 stops16h 40m
Multiple Airlines
Deal found 7/25$676
This Ticket deal was found by Cheapflights users on 7/24. 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 8/213:00 pm
HEL
-
SEA
1 stop15h 40m
Icelandair
Fri 9/43:40 pm
SEA
-
HEL
1 stop12h 20m
Icelandair
Deal found 7/24$678
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.
Wed 10/147:40 pm
HEL
-
SEA
1 stop31h 40m
Turkish Airlines
Fri 10/308:05 pm
SEA
-
HEL
1 stop30h 25m
Turkish Airlines
Deal found 7/28$679
This Mytrip deal was found by Cheapflights users on 7/26. 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.
Wed 9/97:05 am
HEL
-
SEA
2 stops20h 50m
Multiple Airlines
Wed 9/167:00 pm
SEA
-
HEL
3 stops33h 55m
Multiple Airlines
Deal found 7/26$727
This Mytrip deal was found by Cheapflights users on 7/25. 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.
Tue 9/811:15 am
HEL
-
SEA
2 stops34h 30m
Multiple Airlines
Tue 9/157:00 pm
SEA
-
HEL
2 stops20h 30m
Multiple Airlines
Deal found 7/25$737

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 July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$629
(Trip.com)

One-way from

$485
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$1,320

Good one-way deal

$1,276 or less
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. 13% potential increase in price ($147 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a one-way flight from Helsinki-Vantaa to Seattle/Tacoma Intl.
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 July 29, 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

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 9/11

12:05 pm-10:40 am

1 stop32h 35m

Seattle/Tacoma Intl

Fri 9/25

10:42 am-11:10 am

2 stops38h 28m

$800

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Tue 9/8

7:40 pm-10:45 pm

2 stops37h 05m

Seattle/Tacoma Intl

Tue 9/15

7:15 pm-11:55 pm

1 stop18h 40m

$821

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Tue 10/13

7:00 am-4:35 pm

1 stop19h 35m

Seattle/Tacoma Intl

Fri 10/30

4:20 pm-4:40 pm

1 stop15h 20m

$854

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Tue 10/13

7:00 am-11:52 am

1 stop14h 52m

Seattle/Tacoma Intl

Fri 10/30

11:00 am-1:10 pm

2 stops17h 10m

$863

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Tue 10/13

12:30 pm-8:40 pm

2 stops18h 10m

Seattle/Tacoma Intl

Wed 10/28

3:35 pm-3:15 pm

2 stops14h 40m

$880
Quickest round-trip

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 10/14

12:30 pm-5:55 pm

2 stops15h 25m

Seattle/Tacoma Intl

Wed 10/28

3:35 pm-3:15 pm

2 stops14h 40m

$880

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 9/3

7:00 am-11:47 am

1 stop14h 47m

Seattle/Tacoma Intl

Mon 9/7

7:15 am-1:05 pm

2 stops19h 50m

$882

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 8/28

1:55 pm-11:37 am

1 stop31h 42m

Seattle/Tacoma Intl

Fri 9/11

5:45 pm-5:40 pm

1 stop13h 55m

$914

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 8/21

7:00 am-11:37 am

1 stop14h 37m

Seattle/Tacoma Intl

Fri 9/4

5:45 pm-1:05 pm

1 stop33h 20m

$917

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 8/21

11:15 am-11:45 am

3 stops34h 30m

Seattle/Tacoma Intl

Fri 9/4

3:40 pm-1:05 pm

3 stops35h 25m

$976

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/25

Showing 1-10 of 21 resultsSorted by cheapest first
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3

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 July.
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, October is the cheapest month in which you can book a flight from Helsinki to Seattle (average of $821). Flying from Helsinki to Seattle in July is currently the most expensive (average of $1,320). 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 July 29, 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?

Airfare is below average for this route at the moment.

Helsinki to Seattle flights typically cost between $901 and $1,063 in September.
The cheapest round-trip price found within the last 5 days was $629 on Multiple Airlines (Sep 11-Sep 25).

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 14h 52m. 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 (23%), Alaska Airlines (23%), Finnair( 23%).

  • What are the cheapest flights from Helsinki to Seattle?

    Looking for the cheapest flight from Helsinki to Seattle? While on average our users pay $1,414, our data indicates the cheapest price to be $1,002. The most popular route (Helsinki-Vantaa - Seattle/Tacoma Intl), is priced around $629.

  • 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, October is the cheapest month in which you can book a flight from Helsinki to Seattle (average of $821). Flying from Helsinki to Seattle in July is currently the most expensive (average of $1,320). 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
Renton
Tacoma
Lacey
Leavenworth
Olympia
Edmonds
Tukwila
Snoqualmie
Tumwater
Centralia
Puyallup
Kent
Ellensburg
Fife
Marysville
Ocean Shores
Lakewood
Lynnwood
Shoreline

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