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$412+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SEA
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 October or March, booked 47 days in advance, depart on a Monday or Thursday 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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$722
(Flightnetwork)

One-way from

$412
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$748

Good one-way deal

$761 or less
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
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($149 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a one-way flight from Helsinki-Vantaa to Seattle/Tacoma Intl.
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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 March 28, 2025.

This Flightnetwork deal was found by Cheapflights users on 3/27. 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.
Sat 5/37:35 pmHEL - SEA
1 stop31h 40mTurkish Airlines
Sat 5/177:10 pmSEA - HEL
1 stop37h 30mTurkish Airlines
Deal found 3/27$722
This Gotogate deal was found by Cheapflights users on 3/27. 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.
Wed 4/233:00 pmHEL - SEA
1 stop12h 50mIcelandair
Wed 4/307:00 pmSEA - HEL
1 stop33h 00mIcelandair
Deal found 3/27$746
This Flightnetwork deal was found by Cheapflights users on 3/27. 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.
Sat 5/34:40 pmHEL - SEA
Nonstop9h 20mFinnair
Sat 5/175:40 pmSEA - HEL
Nonstop9h 15mFinnair
Deal found 3/27$786
This Ticket deal was found by Cheapflights users on 3/27. 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.
Sat 5/36:25 pmHEL - SEA
1 stop31h 32mMultiple Airlines
Sat 5/176:35 pmSEA - HEL
1 stop18h 45mMultiple Airlines
Deal found 3/27$794
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/47:00 amHEL - SEA
1 stop18h 57mDelta
Wed 5/1410:25 amSEA - HEL
2 stops20h 15mDelta
Deal found 3/26$804
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/34:40 pmHEL - SEA
Nonstop9h 20mAmerican Airlines
Sat 5/175:40 pmSEA - HEL
Nonstop9h 15mAmerican Airlines
Deal found 3/27$806
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/216:10 amHEL - SEA
1 stop16h 15mUnited Airlines
Fri 8/812:20 amSEA - HEL
2 stops32h 35mUnited Airlines
Deal found 3/27$881
This British Airways deal was found by Cheapflights users on 3/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/39:05 pmHEL - SEA
1 stop24h 25mBritish Airways
Sat 5/175:40 pmSEA - HEL
Nonstop9h 15mBritish Airways
Deal found 3/27$890
This Expedia deal was found by Cheapflights users on 3/27. 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.
Wed 4/26:00 amHEL - SEA
1 stop20h 59mLufthansa
Wed 4/98:15 amSEA - HEL
2 stops18h 35mLufthansa
Deal found 3/27$955
This Scandinavian Airlines deal was found by Cheapflights users on 3/27. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/311:15 amHEL - SEA
2 stops19h 29mScandinavian Airlines
Sat 5/177:25 amSEA - HEL
3 stops20h 30mScandinavian Airlines
Deal found 3/27$1,102
This Aeromexico deal was found by Cheapflights users on 3/27. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2412:20 amHEL - SEA
2 stops20h 55mAir France
Fri 5/95:35 pmSEA - HEL
2 stops43h 45mAir France
Deal found 3/27$1,475

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 March 28, 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

Sat 5/3

7:35 pm-5:15 pm

1 stop31h 40m

Seattle/Tacoma Intl

Sat 5/17

7:10 pm-6:40 pm

1 stop37h 30m

$722

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 4/23

3:00 pm-5:50 pm

1 stop12h 50m

Seattle/Tacoma Intl

Wed 4/30

7:00 pm-2:00 pm

1 stop33h 00m

$746

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 5/3

4:40 pm-4:00 pm

Nonstop9h 20m

Seattle/Tacoma Intl

Sat 5/17

5:40 pm-12:55 pm

Nonstop9h 15m

$786

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 5/3

6:25 pm-3:57 pm

1 stop31h 32m

Seattle/Tacoma Intl

Sat 5/17

6:35 pm-11:20 pm

1 stop18h 45m

$794

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 5/4

7:00 am-3:57 pm

1 stop18h 57m

Seattle/Tacoma Intl

Wed 5/14

10:25 am-4:40 pm

2 stops20h 15m

$804

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 5/3

4:40 pm-4:00 pm

Nonstop9h 20m

Seattle/Tacoma Intl

Sat 5/17

5:40 pm-12:55 pm

Nonstop9h 15m

$806

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 6/21

6:10 am-12:25 pm

1 stop16h 15m

Seattle/Tacoma Intl

Fri 8/8

12:20 am-6:55 pm

2 stops32h 35m

$881

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 5/3

9:05 pm-11:30 am

1 stop24h 25m

Seattle/Tacoma Intl

Sat 5/17

5:40 pm-12:55 pm

Nonstop9h 15m

$890

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 4/2

6:00 am-4:59 pm

1 stop20h 59m

Seattle/Tacoma Intl

Wed 4/9

8:15 am-12:50 pm

2 stops18h 35m

$955

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sat 5/3

11:15 am-8:44 pm

2 stops19h 29m

Seattle/Tacoma Intl

Sat 5/17

7:25 am-1:55 pm

3 stops20h 30m

$1,102

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

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 March.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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 March 21, 2025.

Booking 46 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, January is the cheapest month in which you can book a flight from Helsinki to Seattle (average of $238). Flying from Helsinki to Seattle in July is currently the most expensive (average of $411). 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 March 28, 2025.

It’s optimal to fly from Helsinki to Seattle at noon. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the afternoon.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 March 28, 2025.
See what other customers who have flown with Delta, Finnair and Air France from Helsinki to Seattle have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,896 reviews
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,424 reviews
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,603 reviews
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Turkish Airlines
7.3
Good
3,744 reviews
Delta
8.0
Very good
7,896 reviews

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    Currently priced at $722, Turkish Airlines will fly you from Helsinki to Seattle and back. In addition to Turkish Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and Finnair - these airlines can fly you to your destination from $746 and $786, respectively. Turkish Airlines is currently priced 14% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Helsinki to Seattle one-way?

    The cheapest airlines for a one-way flight from Helsinki to Seattle are Scandinavian Airlines ($615), Finnair ($813), and United Airlines ($1,331).

  • What are the cheapest flights from Helsinki to Seattle?

    Looking for the cheapest flight from Helsinki to Seattle? While on average our users pay $1,633, our data indicates the cheapest price to be $757. The most popular route (Helsinki-Vantaa - Seattle/Tacoma Intl), is priced around $678.

  • 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, January is the cheapest month in which you can book a flight from Helsinki to Seattle (average of $238). Flying from Helsinki to Seattle in July is currently the most expensive (average of $411). 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 Helsinki?

Book flights to Helsinki if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Lacey
Ocean Shores
Leavenworth
Federal Way
Olympia
Cle Elum
Centralia
Mukilteo
Aberdeen
Shoreline
Lynnwood
Shelton
Silverdale
Redmond
Monroe

Browse thousands of different options on Cheapflights for your next trip

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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 3 airlines flying from Helsinki to Seattle

Discover the top 3 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$622Average$811FlexibilityNo cancel feeOn-time76%
FinnairCheapest$690Average$1,060FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$754Average$906FlexibilityNo cancel feeOn-time77%
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