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$513+ 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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SEA
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Find cheap flights from Helsinki 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

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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 April, booked 87 days in advance, depart on a Wednesday or Monday and return on a Sunday

Cheap 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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$640
(Mytrip)

One-way from

$513
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$773
Provider with most accurate pricing for Helsinki-Vantaa-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Helsinki-Vantaa-Seattle/Tacoma Intl flights.
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From Helsinki-Vantaa to Seattle/Tacoma Intl
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One-way flight from Helsinki-Vantaa to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 9% potential increase in price ($88 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 16, 2025.

This Mytrip deal was found by Cheapflights users on 10/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:05 pmHEL - SEA
2 stops25h 05mMultiple Airlines
Mon 11/242:00 pmSEA - HEL
2 stops22h 25mMultiple Airlines
Deal found 10/16$640
This Ticket deal was found by Cheapflights users on 10/16. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2312:35 pmHEL - SEA
1 stop38h 40mTurkish Airlines
Wed 11/57:00 pmSEA - HEL
1 stop30h 35mTurkish Airlines
Deal found 10/16$769
This Flightnetwork deal was found by Cheapflights users on 10/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/131:55 pmHEL - SEA
1 stop13h 05mIcelandair
Thu 11/202:35 pmSEA - HEL
1 stop12h 20mIcelandair
Deal found 10/16$808
This Travelis deal was found by Cheapflights users on 10/16. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/912:30 pmHEL - SEA
1 stop38h 35mTurkish Airlines
Mon 11/247:00 pmSEA - HEL
1 stop37h 05mTurkish Airlines
Deal found 10/16$811
This Delta deal was found by Cheapflights users on 10/16. 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.
Sun 11/97:00 amHEL - SEA
1 stop14h 45mDelta
Mon 11/249:32 amSEA - HEL
2 stops20h 53mDelta
Deal found 10/16$856
This Delta deal was found by Cheapflights users on 10/16. 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.
Thu 10/237:00 amHEL - SEA
1 stop19h 05mDelta
Wed 11/57:25 amSEA - HEL
2 stops23h 00mDelta
Deal found 10/16$857
This Delta deal was found by Cheapflights users on 10/16. 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.
Thu 11/137:00 amHEL - SEA
2 stops21h 40mDelta
Thu 11/209:32 amSEA - HEL
2 stops20h 53mDelta
Deal found 10/16$862
This Mytrip deal was found by Cheapflights users on 10/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:30 amHEL - SEA
3 stops21h 30mMultiple Airlines
Thu 11/202:35 pmSEA - HEL
3 stops23h 55mMultiple Airlines
Deal found 10/16$864
This Expedia deal was found by Cheapflights users on 10/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/291:55 pmHEL - SEA
2 stops16h 43mMultiple Airlines
Sat 12/62:35 pmSEA - HEL
2 stops32h 00mMultiple Airlines
Deal found 10/15$911

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 October 16, 2025.
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

Sun 11/9

9:05 pm-12:10 pm

2 stops25h 05m

Seattle/Tacoma Intl

Mon 11/24

2:00 pm-10:25 pm

2 stops22h 25m

$640

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 11/13

1:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 11/20

2:35 pm-12:55 pm

1 stop12h 20m

$808

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 3/6

7:00 pm-5:05 pm

1 stop32h 05m

Seattle/Tacoma Intl

Tue 3/10

8:00 pm-11:35 am

1 stop30h 35m

$811

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 11/9

12:30 pm-5:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Mon 11/24

7:00 pm-6:05 pm

1 stop37h 05m

$811

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 3/6

11:35 am-5:00 pm

2 stops15h 25m

Seattle/Tacoma Intl

Tue 3/10

3:35 pm-2:55 pm

2 stops14h 20m

$847

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 11/9

7:00 am-11:45 am

1 stop14h 45m

Seattle/Tacoma Intl

Mon 11/24

9:32 am-4:25 pm

2 stops20h 53m

$856

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 11/13

2:10 pm-12:10 pm

2 stops32h 00m

Seattle/Tacoma Intl

Thu 11/20

5:50 am-11:15 pm

3 stops31h 25m

$856

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 11/13

7:00 am-11:45 am

1 stop14h 45m

Seattle/Tacoma Intl

Thu 11/20

9:32 am-4:25 pm

2 stops20h 53m

$857

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 3/6

7:00 am-6:49 pm

2 stops21h 49m

Seattle/Tacoma Intl

Tue 3/10

2:40 pm-4:25 pm

1 stop16h 45m

$903

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 3/15

10:00 am-6:00 pm

2 stops17h 00m

$513

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 14 results
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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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?

Use this chart to determine the optimal time to book a round-trip flight from Helsinki to Seattle. Price data was last updated on October 10, 2025.

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 July is currently the most expensive (average of $758). 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 October 16, 2025.

It’s optimal to fly from Helsinki to Seattle at noon. By choosing this option you can save up to 19% on the cost of your flight, compared to a flight in the afternoon.

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

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 October 16, 2025.
Get a feel of what it's like to fly with Finnair and Icelandair from Helsinki to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,332 reviews

Crew

8.1

Comfort

7.4

Entertainment

6.9

Food

6.7

Overall

7.6

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,332 reviews
Finnair
7.6
Good
1,332 reviews

Crew

8.1

Comfort

7.4

Entertainment

6.9

Food

6.7

Overall

7.6

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Icelandair
7.0
Good
556 reviews
Finnair
7.6
Good
1,332 reviews

Crew

8.1

Comfort

7.4

Entertainment

6.9

Food

6.7

Overall

7.6

Boarding

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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 13h 05m. Helsinki and Seattle are separated by a distance of 4764 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Helsinki to Seattle round-trip?

    Currently priced at $504, Icelandair will fly you from Helsinki to Seattle and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Finnair for as low as $595. Icelandair is currently priced 40% below the average price you’ll pay for this route.

  • 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 (36%), Alaska Airlines (36%), Finnair( 36%).

  • 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 July is currently the most expensive (average of $758). 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
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Lacey
Olympia
Kent
Federal Way
Cle Elum
Marysville
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen

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 Helsinki to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Helsinki to Portland flights
Helsinki to Spokane flights

Top 2 airlines flying from Helsinki to Seattle

Discover the top 2 airlines that operate flights from Helsinki 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$504Average$795FlexibilityNo cancel feeOn-time76%
FinnairCheapest$595Average$862FlexibilityNo cancel feeOn-time76%

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