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$524+ Cheap flights from Helsinki (HEL) 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SEA
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Helsinki-Vantaa to Seattle/Tacoma Intl are usually found in March or October, booked 87 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

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 January 29, 2026.

This flugladen.de deal was found by Cheapflights users on 1/28. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:20 am
HEL
-
SEA
2 stops17h 40m
Multiple Airlines
Mon 3/163:35 pm
SEA
-
HEL
2 stops21h 50m
Multiple Airlines
Deal found 1/28$524
This Trip.com deal was found by Cheapflights users on 1/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1510:00 am
HEL
-
SEA
2 stops36h 10m
Multiple Airlines
Sun 3/224:10 pm
SEA
-
HEL
2 stops21h 15m
Multiple Airlines
Deal found 1/29$661
This Travelis deal was found by Cheapflights users on 1/28. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/22:05 pm
HEL
-
SEA
1 stop31h 30m
KLM
Mon 3/164:05 pm
SEA
-
HEL
1 stop23h 00m
KLM
Deal found 1/28$750
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Mon 3/212:30 pm
HEL
-
SEA
1 stop38h 35m
Turkish Airlines
Mon 3/168:00 pm
SEA
-
HEL
1 stop37h 05m
Turkish Airlines
Deal found 1/28$757
This Travelis deal was found by Cheapflights users on 1/29. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1512:30 pm
HEL
-
SEA
1 stop38h 35m
Turkish Airlines
Sun 3/228:00 pm
SEA
-
HEL
1 stop37h 05m
Turkish Airlines
Deal found 1/29$780

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$524
(flugladen.de)

Popular in

December

Cheapest in

March

Average price

$960

Good one-way deal

$2,298 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
Highest demand for flights based on searches. 6% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 29, 2026.
Use the filters below to find and compare flights from Helsinki to Seattle that are best for you.

Fly from

Helsinki

Fly to

Seattle

Route

Depart

Return

Price

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 3/2

9:20 am-5:00 pm

2 stops17h 40m

Seattle/Tacoma Intl

Mon 3/16

3:35 pm-10:25 pm

2 stops21h 50m

$527

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 3/2

12:30 pm-5:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Mon 3/16

8:00 pm-6:05 pm

1 stop37h 05m

$765

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 3/9

12:30 pm-6:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Tue 3/24

8:00 pm-6:05 pm

1 stop37h 05m

$828

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 3/11

12:30 pm-6:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Thu 3/26

8:00 pm-6:05 pm

1 stop37h 05m

$831

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Tue 3/10

12:30 pm-6:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Sat 3/28

7:10 pm-11:10 am

1 stop30h 00m

$834

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Tue 3/10

7:00 pm-6:05 pm

1 stop32h 05m

Seattle/Tacoma Intl

Sun 3/29

7:10 pm-6:40 pm

1 stop37h 30m

$834

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 3/14

12:30 pm-6:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Tue 3/24

8:00 pm-6:05 pm

1 stop37h 05m

$837

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 3/11

12:30 pm-6:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Sat 3/28

7:10 pm-11:10 am

1 stop30h 00m

$837

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 3/2

11:10 am-5:00 pm

2 stops15h 50m

Seattle/Tacoma Intl

Mon 3/16

3:35 pm-12:55 pm

1 stop12h 20m

$867

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 3/9

10:10 am-6:00 pm

2 stops16h 50m

Seattle/Tacoma Intl

Fri 3/27

3:35 pm-8:10 pm

2 stops19h 35m

$874

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 20 results
1
2
  • 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?

Use this chart to determine the optimal time to book a round-trip flight from Helsinki to Seattle. Price data was last updated on January 23, 2026.

Booking 87 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, May is the cheapest month in which you can book a flight from Helsinki to Seattle (average of $498). Flying from Helsinki to Seattle in December is currently the most expensive (average of $801). 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.

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 38h 35m. Helsinki and Seattle are separated by a distance of 4764 mi.

  • What are the cheapest flights from Helsinki to Seattle?

    Looking for the cheapest flight from Helsinki to Seattle? While on average our users pay $2,298, our data indicates the cheapest price to be $2,298. The most popular route (Helsinki-Vantaa - Seattle/Tacoma Intl), is priced around $527.

  • 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, May is the cheapest month in which you can book a flight from Helsinki to Seattle (average of $498). Flying from Helsinki to Seattle in December is currently the most expensive (average of $801). 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
Lynnwood
Lacey
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

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