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$718+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SEA
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 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 September 15, 2025.

Round-trip from

$718
(Mytrip)

Popular in

July

Cheapest in

March

Average price

$837
From Helsinki-Vantaa to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 9% potential increase in price ($92 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 September 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 September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:30 pmHEL - SEA
3 stops35h 30mMultiple Airlines
Thu 11/62:35 pmSEA - HEL
3 stops32h 50mMultiple Airlines
Deal found 9/15$718
This Travelis deal was found by Cheapflights users on 9/14. 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 9/227:35 pmHEL - SEA
1 stop25h 00mTurkish Airlines
Sun 10/57:10 pmSEA - HEL
1 stop30h 30mTurkish Airlines
Deal found 9/14$756
This Mytrip deal was found by Cheapflights users on 9/14. 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 11/271:55 pmHEL - SEA
2 stops18h 21mMultiple Airlines
Fri 12/58:00 pmSEA - HEL
3 stops30h 55mMultiple Airlines
Deal found 9/14$758
This Travelis deal was found by Cheapflights users on 9/15. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2612:30 pmHEL - SEA
1 stop38h 35mTurkish Airlines
Wed 12/37:00 pmSEA - HEL
1 stop37h 05mTurkish Airlines
Deal found 9/15$774
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2611:10 amHEL - SEA
2 stops15h 50mIcelandair
Wed 12/32:35 pmSEA - HEL
2 stops14h 40mIcelandair
Deal found 9/15$792
This Gotogate deal was found by Cheapflights users on 9/14. 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.
Mon 10/133:00 pmHEL - SEA
1 stop15h 40mIcelandair
Tue 10/283:35 pmSEA - HEL
1 stop12h 20mIcelandair
Deal found 9/14$796
This Icelandair deal was found by Cheapflights users on 9/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/511:10 amHEL - SEA
2 stops15h 50mIcelandair
Tue 11/118:37 amSEA - HEL
2 stops18h 18mIcelandair
Deal found 9/15$799
This Ticket deal was found by Cheapflights users on 9/14. 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 11/271:55 pmHEL - SEA
1 stop13h 05mIcelandair
Fri 12/52:35 pmSEA - HEL
1 stop12h 20mIcelandair
Deal found 9/14$804
This Icelandair deal was found by Cheapflights users on 9/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:10 amHEL - SEA
2 stops15h 50mIcelandair
Wed 11/58:15 pmSEA - HEL
2 stops30h 40mIcelandair
Deal found 9/15$805

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 September 15, 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

Tue 12/9

11:10 am-5:00 pm

2 stops15h 50m

Seattle/Tacoma Intl

Mon 12/15

8:14 pm-12:55 pm

2 stops30h 41m

$805

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 11/19

12:30 pm-5:05 pm

1 stop38h 35m

Seattle/Tacoma Intl

Wed 11/26

7:00 pm-6:05 pm

1 stop37h 05m

$817

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 12/10

11:10 am-5:00 pm

2 stops15h 50m

Seattle/Tacoma Intl

Tue 12/16

2:35 pm-3:35 pm

2 stops15h 00m

$828

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 12/8

10:10 am-5:00 pm

2 stops16h 50m

Seattle/Tacoma Intl

Tue 12/16

2:35 pm-3:35 pm

2 stops15h 00m

$831

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 12/1

10:10 am-5:00 pm

2 stops16h 50m

Seattle/Tacoma Intl

Tue 12/9

2:35 pm-2:55 pm

2 stops14h 20m

$839

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 10/30

7:00 am-12:45 pm

1 stop14h 45m

Seattle/Tacoma Intl

Thu 11/6

11:43 am-4:25 pm

2 stops18h 42m

$846

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 11/28

1:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 12/4

2:35 pm-12:55 pm

1 stop12h 20m

$846

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 12/7

1:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Mon 12/15

2:35 pm-12:55 pm

1 stop12h 20m

$846

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Fri 11/21

1:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 11/27

2:35 pm-12:55 pm

1 stop12h 20m

$846

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 12/7

1:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sun 12/14

2:35 pm-12:55 pm

1 stop12h 20m

$846

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 12 results
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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 September 12, 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, 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 June is currently the most expensive (average of $387). 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 September 15, 2025.

It’s optimal to fly from Helsinki to Seattle at noon. By choosing this option you can save up to 20% 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 September 15, 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
1,323 reviews

Crew

8.1

Overall

7.6

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Food

6.7

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
1,323 reviews
Finnair
7.6
Good
1,323 reviews

Crew

8.1

Overall

7.6

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Food

6.7

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
544 reviews
Finnair
7.6
Good
1,323 reviews

Crew

8.1

Overall

7.6

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Food

6.7

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 15h 50m. 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 (45%), Alaska Airlines (45%), Finnair( 45%).

  • 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 June is currently the most expensive (average of $387). 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
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$504Average$770FlexibilityNo cancel feeOn-time76%
FinnairCheapest$595Average$862FlexibilityNo cancel feeOn-time76%

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