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$504+ 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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SEA
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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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2. Select your favorite providers

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3. Compare prices and book

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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 February 3, 2026.

This Trip.com deal was found by Cheapflights users on 2/2. 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 3/47:40 am
HEL
-
SEA
2 stops19h 20m
Multiple Airlines
Wed 3/113:35 pm
SEA
-
HEL
2 stops21h 50m
Multiple Airlines
Deal found 2/2$512
This Trip.com deal was found by Cheapflights users on 2/2. 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.
Mon 3/99:20 am
HEL
-
SEA
2 stops17h 40m
Multiple Airlines
Mon 3/233:35 pm
SEA
-
HEL
2 stops18h 45m
Multiple Airlines
Deal found 2/2$627
This Mytrip deal was found by Cheapflights users on 2/2. 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.
Thu 3/197:40 am
HEL
-
SEA
2 stops19h 20m
Multiple Airlines
Thu 3/263:35 pm
SEA
-
HEL
2 stops21h 50m
Multiple Airlines
Deal found 2/2$719
This Trip.com deal was found by Cheapflights users on 2/3. 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 3/57:40 am
HEL
-
SEA
2 stops38h 30m
Multiple Airlines
Wed 3/184:10 pm
SEA
-
HEL
2 stops21h 15m
Multiple Airlines
Deal found 2/3$721
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Wed 3/412:30 pm
HEL
-
SEA
1 stop38h 35m
Turkish Airlines
Wed 3/118:00 pm
SEA
-
HEL
1 stop37h 05m
Turkish Airlines
Deal found 2/2$779
This SmartFares deal was found by Cheapflights users on 1/31. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1812:30 pm
HEL
-
SEA
1 stop38h 35m
Turkish Airlines
Wed 3/258:00 pm
SEA
-
HEL
1 stop30h 35m
Turkish Airlines
Deal found 1/31$791

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$512
(Trip.com)

One-way from

$504
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$932
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. 6% potential increase in price ($57 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 February 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 February 3, 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 3/9

9:20 am-6:00 pm

2 stops17h 40m

Seattle/Tacoma Intl

Mon 3/23

3:35 pm-7:20 pm

2 stops18h 45m

$627

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 3/19

7:40 am-6:00 pm

2 stops19h 20m

Seattle/Tacoma Intl

Thu 3/26

3:35 pm-10:25 pm

2 stops21h 50m

$719

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 3/5

7:40 am-12:10 pm

2 stops38h 30m

Seattle/Tacoma Intl

Wed 3/18

4:10 pm-10:25 pm

2 stops21h 15m

$721

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 3/4

7:40 am-5:00 pm

3 stops19h 20m

Seattle/Tacoma Intl

Wed 3/11

3:35 pm-7:20 pm

3 stops18h 45m

$740

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 3/5

12:30 pm-5:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Wed 3/18

8:00 pm-6:05 pm

1 stop37h 05m

$779

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 3/18

12:30 pm-6:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Wed 3/25

8:00 pm-11:35 am

1 stop30h 35m

$791

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 3/9

12:30 pm-6:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Mon 3/23

8:00 pm-6:05 pm

1 stop37h 05m

$826

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 3/23

4:40 pm-7:15 pm

3 stops35h 35m

$504

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 5/30

7:15 am-5:55 pm

2 stops20h 40m

$576

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 7/12

11:25 pm-8:40 pm

2 stops31h 15m

$655

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 15 results
1
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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 February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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?

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 30, 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.

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.

  • 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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