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$365+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SEA
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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 Monday

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 November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$756
(Sembo)

One-way from

$365
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$801
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. 3% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 26, 2025.

This Icelandair deal was found by Cheapflights users on 11/24. 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.
Thu 11/271:55 pmHEL - SEA
1 stop13h 05mIcelandair
Mon 12/12:35 pmSEA - HEL
1 stop12h 20mIcelandair
Deal found 11/24$953
This Icelandair deal was found by Cheapflights users on 11/25. 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.
Mon 12/151:55 pmHEL - SEA
2 stops31h 54mIcelandair
Wed 12/312:35 pmSEA - HEL
2 stops15h 00mIcelandair
Deal found 11/25$954
This Delta deal was found by Cheapflights users on 11/25. 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 12/142:05 pmHEL - SEA
1 stop31h 45mDelta
Tue 12/301:40 pmSEA - HEL
1 stop16h 45mDelta
Deal found 11/25$965
This Delta deal was found by Cheapflights users on 11/25. 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.
Mon 12/157:00 amHEL - SEA
2 stops18h 35mDelta
Thu 1/11:40 pmSEA - HEL
1 stop16h 45mDelta
Deal found 11/25$970
This Delta deal was found by Cheapflights users on 11/25. 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.
Fri 12/127:00 amHEL - SEA
1 stop14h 50mDelta
Tue 12/301:40 pmSEA - HEL
1 stop16h 45mDelta
Deal found 11/25$976
This Delta deal was found by Cheapflights users on 11/25. 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.
Tue 12/166:30 amHEL - SEA
1 stop14h 55mDelta
Thu 1/11:40 pmSEA - HEL
1 stop16h 45mDelta
Deal found 11/25$982
This Delta deal was found by Cheapflights users on 11/25. 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.
Tue 12/166:30 amHEL - SEA
1 stop14h 55mDelta
Wed 12/317:25 amSEA - HEL
2 stops19h 45mDelta
Deal found 11/25$988
This Icelandair deal was found by Cheapflights users on 11/25. 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.
Mon 12/151:55 pmHEL - SEA
2 stops31h 54mIcelandair
Mon 1/52:35 pmSEA - HEL
1 stop12h 20mIcelandair
Deal found 11/25$1,013
This Delta deal was found by Cheapflights users on 11/25. 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.
Wed 12/177:00 amHEL - SEA
2 stops21h 26mDelta
Tue 12/301:40 pmSEA - HEL
1 stop16h 45mDelta
Deal found 11/25$1,024
This Delta deal was found by Cheapflights users on 11/25. 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.
Sat 12/136:30 amHEL - SEA
1 stop14h 55mDelta
Wed 12/312:05 pmSEA - HEL
1 stop16h 20mDelta
Deal found 11/25$1,025
This Delta deal was found by Cheapflights users on 11/25. 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 12/147:00 amHEL - SEA
2 stops18h 35mDelta
Wed 12/3110:30 amSEA - HEL
2 stops16h 40mDelta
Deal found 11/25$1,030

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 November 26, 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

Mon 1/19

11:10 am-5:00 pm

2 stops15h 50m

Seattle/Tacoma Intl

Mon 2/2

11:05 pm-12:55 pm

2 stops27h 50m

$756

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 1/19

1:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Mon 2/2

2:35 pm-12:55 pm

1 stop12h 20m

$776

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 5/7

7:30 pm-5:15 pm

1 stop31h 45m

Seattle/Tacoma Intl

Mon 5/11

7:10 pm-6:35 pm

1 stop37h 25m

$804

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 1/12

11:10 am-5:00 pm

2 stops15h 50m

Seattle/Tacoma Intl

Tue 1/20

11:24 am-12:55 pm

2 stops15h 31m

$812

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 1/12

11:10 am-5:00 pm

2 stops15h 50m

Seattle/Tacoma Intl

Mon 1/19

7:55 pm-12:55 pm

2 stops31h 00m

$813

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 1/12

1:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sat 1/17

2:35 pm-12:55 pm

1 stop12h 20m

$819

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 1/12

1:55 pm-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Fri 1/16

2:35 pm-12:55 pm

1 stop12h 20m

$819

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 2/2

4:40 pm-11:30 am

2 stops28h 50m

$365

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Sun 2/1

7:45 pm-10:34 am

3 stops48h 49m

$393

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Tue 5/19

7:05 am-6:25 pm

2 stops21h 20m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Showing 1-10 of 16 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 November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Helsinki-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 November 21, 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 December is currently the most expensive (average of $802). 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 November 26, 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 November 26, 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
1,334 reviews

Crew

8.1

Entertainment

6.9

Food

6.7

Boarding

7.6

Comfort

7.4

Overall

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
1,334 reviews
Finnair
7.6
Good
1,334 reviews

Crew

8.1

Entertainment

6.9

Food

6.7

Boarding

7.6

Comfort

7.4

Overall

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
581 reviews
Finnair
7.6
Good
1,334 reviews

Crew

8.1

Entertainment

6.9

Food

6.7

Boarding

7.6

Comfort

7.4

Overall

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 41% below the average price you’ll pay for this route.

  • 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 $802). 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
Olympia
Lakewood
Ocean Shores
Tukwila
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Cle Elum
Marysville
Leavenworth
Fife
Issaquah
Aberdeen
Shoreline
Centralia

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 Spokane flights
Helsinki to Portland 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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$504Average$816FlexibilityNo cancel feeOn-time76%
FinnairCheapest$595Average$840FlexibilityNo cancel feeOn-time76%

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