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$411+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SEA
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Helsinki-Vantaa to Seattle/Tacoma Intl are usually found in March or April, booked 47 days in advance, depart on a Monday or Wednesday 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 junio 12, 2025.

Round-trip from

$780
(FlightHub)

One-way from

$411
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$886

Good round-trip deal

$948 or less

Good one-way deal

$997 or less
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. 10% potential increase in price ($100 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Helsinki-Vantaa to Seattle/Tacoma Intl.
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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 junio 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/612:35 pmHEL - SEA
1 stop32h 00mTurkish Airlines
dom. 8/317:10 pmSEA - HEL
1 stop37h 30mTurkish Airlines
Deal found 6/10$780
This Scandinavian Airlines deal was found by Cheapflights users on 6/10. 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.
sáb. 10/189:00 pmHEL - SEA
1 stop27h 00mScandinavian Airlines
sáb. 11/17:20 amSEA - HEL
2 stops42h 20mScandinavian Airlines
Deal found 6/10$806
This Travelis deal was found by Cheapflights users on 6/12. 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.
lun. 7/214:20 pmHEL - SEA
Nonstop9h 40mFinnair
mié. 8/65:40 pmSEA - HEL
Nonstop9h 30mFinnair
Deal found 6/12$812
This American Airlines deal was found by Cheapflights users on 6/12. 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.
lun. 7/214:20 pmHEL - SEA
Nonstop9h 40mAmerican Airlines
mié. 8/65:40 pmSEA - HEL
Nonstop9h 30mAmerican Airlines
Deal found 6/12$852
This Travelocity deal was found by Cheapflights users on 6/10. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/69:05 pmHEL - SEA
1 stop24h 30mMultiple Airlines
sáb. 8/308:20 pmSEA - HEL
2 stops16h 50mMultiple Airlines
Deal found 6/10$900
This United Airlines deal was found by Cheapflights users on 6/11. 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.
jue. 7/171:35 pmHEL - SEA
3 stops32h 15mUnited Airlines
dom. 7/275:00 amSEA - HEL
2 stops27h 55mUnited Airlines
Deal found 6/11$921
This Lufthansa deal was found by Cheapflights users on 6/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/56:10 amHEL - SEA
2 stops27h 49mLufthansa
mar. 9/27:00 amSEA - HEL
2 stops31h 25mLufthansa
Deal found 6/10$931
This Delta deal was found by Cheapflights users on 6/10. 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.
vie. 8/87:00 amHEL - SEA
1 stop14h 35mDelta
vie. 8/296:40 pmSEA - HEL
1 stop36h 00mDelta
Deal found 6/10$935
This Ticket deal was found by Cheapflights users on 6/12. 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.
lun. 7/216:10 amHEL - SEA
2 stops37h 11mAir Canada
mié. 8/67:15 pmSEA - HEL
2 stops35h 25mAir Canada
Deal found 6/12$953
This Flightnetwork deal was found by Cheapflights users on 6/10. 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.
mié. 6/183:00 pmHEL - SEA
1 stop30h 25mIcelandair
mié. 7/27:00 pmSEA - HEL
1 stop33h 00mIcelandair
Deal found 6/10$977
This Iberia deal was found by Cheapflights users on 6/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/214:20 pmHEL - SEA
Nonstop9h 40mIberia
mié. 8/65:40 pmSEA - HEL
Nonstop9h 30mIberia
Deal found 6/12$978
This Air France deal was found by Cheapflights users on 6/12. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/136:40 amHEL - SEA
1 stop20h 50mAir France
vie. 6/206:45 pmSEA - HEL
1 stop18h 35mAir France
Deal found 6/12$1,121

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 junio 12, 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

mié. 8/6

12:35 pm-10:35 am

1 stop32h 00m

Seattle/Tacoma Intl

dom. 8/31

7:10 pm-6:40 pm

1 stop37h 30m

$780

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

sáb. 10/18

9:00 pm-2:00 pm

1 stop27h 00m

Seattle/Tacoma Intl

sáb. 11/1

7:20 am-10:40 am

2 stops42h 20m

$806

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

lun. 7/21

4:20 pm-4:00 pm

Nonstop9h 40m

Seattle/Tacoma Intl

mié. 8/6

5:40 pm-1:10 pm

Nonstop9h 30m

$812

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

lun. 7/21

4:20 pm-4:00 pm

Nonstop9h 40m

Seattle/Tacoma Intl

mié. 8/6

5:40 pm-1:10 pm

Nonstop9h 30m

$852

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

mié. 8/6

9:05 pm-11:35 am

1 stop24h 30m

Seattle/Tacoma Intl

sáb. 8/30

8:20 pm-11:10 pm

2 stops16h 50m

$900

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

jue. 7/17

1:35 pm-11:50 am

3 stops32h 15m

Seattle/Tacoma Intl

dom. 7/27

5:00 am-6:55 pm

2 stops27h 55m

$921

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

mar. 8/5

6:10 am-11:59 pm

2 stops27h 49m

Seattle/Tacoma Intl

mar. 9/2

7:00 am-12:25 am

2 stops31h 25m

$931

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

vie. 8/8

7:00 am-11:35 am

1 stop14h 35m

Seattle/Tacoma Intl

vie. 8/29

6:40 pm-4:40 pm

1 stop36h 00m

$935

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

lun. 7/21

6:10 am-9:21 am

2 stops37h 11m

Seattle/Tacoma Intl

mié. 8/6

7:15 pm-4:40 pm

2 stops35h 25m

$953

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

lun. 7/21

4:20 pm-4:00 pm

Nonstop9h 40m

Seattle/Tacoma Intl

mié. 8/6

5:40 pm-1:10 pm

Nonstop9h 30m

$978

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 20 results
1
2

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 June 9, 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 $391). 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 junio 12, 2025.

It’s optimal to fly from Helsinki to Seattle at noon. By choosing this option you can save up to 22% 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 junio 12, 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
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Turkish Airlines
7.3
Good
3,848 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 airports do I use to fly from Helsinki to Seattle?

    To fly from Helsinki to Seattle, you need to book a flight from Helsinki-Vantaa (HEL) to Seattle/Tacoma Intl (SEA). Nonstop flights to Seattle/Tacoma Intl from Helsinki-Vantaa take 9h 40m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from Helsinki-Vantaa to Seattle/Tacoma Intl offered by 2 different airlines.

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

    Currently priced at $780, 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 Scandinavian Airlines and Finnair - these airlines can fly you to your destination from $806 and $837, respectively. Turkish Airlines is currently priced 5% 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 ($546), Icelandair ($737), and Lufthansa ($796).

  • 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 (10%), Alaska Airlines (10%), Finnair( 10%).

  • What are the cheapest flights from Helsinki to Seattle?

    Looking for the cheapest flight from Helsinki to Seattle? While on average our users pay $997, our data indicates the cheapest price to be $776. The most popular route (Helsinki-Vantaa - Seattle/Tacoma Intl), is priced around $751.

  • 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 $391). 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
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

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 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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$504Average$775FlexibilityNo cancel feeOn-time76%
FinnairCheapest$595Average$884FlexibilityNo cancel feeOn-time76%

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