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$355+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SEA
Feb 26 — Mar 51
Wed 2/26
Wed 3/5
1 adult, Economy
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The best prices from Helsinki-Vantaa to Seattle/Tacoma Intl are usually found in March or October, booked 88 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 February 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$678
(Sembo)

One-way from

$355
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$778

Good round-trip deal

$862 or less

Good one-way deal

$735 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
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Highest demand for flights based on searches. 14% potential increase in price ($145 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 21, 2025.

This Booking.com deal was found by Cheapflights users on 2/21. 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.
Tue 4/152:25 pmHEL - SEA
2 stops16h 15mIcelandair
Tue 4/223:45 pmSEA - HEL
2 stops15h 20mIcelandair
Deal found 2/21$650
This Sembo deal was found by Cheapflights users on 2/20. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/247:00 pmHEL - SEA
1 stop32h 05mTurkish Airlines
Tue 4/87:10 pmSEA - HEL
1 stop30h 30mTurkish Airlines
Deal found 2/20$678
This Orbitz deal was found by Cheapflights users on 2/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1912:00 pmHEL - SEA
2 stops15h 00mMultiple Airlines
Wed 3/263:35 pmSEA - HEL
2 stops31h 40mMultiple Airlines
Deal found 2/20$717
This Delta deal was found by Cheapflights users on 2/20. 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 3/197:00 amHEL - SEA
1 stop14h 40mDelta
Wed 3/267:30 amSEA - HEL
2 stops20h 40mDelta
Deal found 2/20$785
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Thu 3/64:00 pmHEL - SEA
1 stop16h 41mAmerican Airlines
Wed 3/195:22 amSEA - HEL
1 stop20h 28mAmerican Airlines
Deal found 2/20$817
This StudentUniverse deal was found by Cheapflights users on 2/20. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/274:00 pmHEL - SEA
1 stop17h 24mFinnair
Thu 3/67:00 amSEA - HEL
1 stop17h 50mFinnair
Deal found 2/20$822
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 3/126:40 amHEL - SEA
2 stops47h 50mUnited Airlines
Wed 3/197:05 amSEA - HEL
3 stops50h 35mUnited Airlines
Deal found 2/20$845
This British Airways deal was found by Cheapflights users on 2/21. 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 10/1811:05 amHEL - SEA
2 stops20h 25mBritish Airways
Sat 11/17:50 pmSEA - HEL
1 stop16h 15mBritish Airways
Deal found 2/21$878
This StudentUniverse deal was found by Cheapflights users on 2/20. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:30 amHEL - SEA
2 stops24h 14mScandinavian Airlines
Thu 3/131:35 pmSEA - HEL
2 stops19h 05mScandinavian Airlines
Deal found 2/20$884
This Flysmarter deal was found by Cheapflights users on 2/21. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/67:00 amHEL - SEA
1 stop15h 10mAir Canada
Wed 3/198:10 amSEA - HEL
2 stops18h 50mAir Canada
Deal found 2/21$942
This Lufthansa deal was found by Cheapflights users on 2/21. 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.
Mon 7/76:10 amHEL - SEA
1 stop15h 45mLufthansa
Sun 12/213:10 pmSEA - HEL
2 stops24h 00mLufthansa
Deal found 2/21$1,172
This Aeromexico deal was found by Cheapflights users on 2/20. 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 5/96:35 pmSEA - HEL
1 stop18h 45mAir France
Deal found 2/20$1,276

Find flights from Helsinki to Seattle within your budget

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 February 21, 2025.

Fly from

Helsinki

Fly to

Seattle

Route

Depart

Return

Price

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Tue 4/15

2:25 pm-8:40 pm

2 stops16h 15m

Seattle/Tacoma Intl

Tue 4/22

3:45 pm-5:05 pm

2 stops15h 20m

$650

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 3/24

7:00 pm-6:05 pm

1 stop32h 05m

Seattle/Tacoma Intl

Tue 4/8

7:10 pm-11:40 am

1 stop30h 30m

$678

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 3/19

12:00 pm-6:00 pm

2 stops15h 00m

Seattle/Tacoma Intl

Wed 3/26

3:35 pm-8:15 am

2 stops31h 40m

$717

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 3/19

7:00 am-12:40 pm

1 stop14h 40m

Seattle/Tacoma Intl

Wed 3/26

7:30 am-1:10 pm

2 stops20h 40m

$785

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 3/6

4:00 pm-10:41 pm

1 stop16h 41m

Seattle/Tacoma Intl

Wed 3/19

5:22 am-10:50 am

1 stop20h 28m

$817

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Wed 3/12

6:40 am-9:30 pm

2 stops47h 50m

Seattle/Tacoma Intl

Wed 3/19

7:05 am-6:40 pm

3 stops50h 35m

$845

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 3/6

6:30 am-8:44 pm

2 stops24h 14m

Seattle/Tacoma Intl

Thu 3/13

1:35 pm-5:40 pm

2 stops19h 05m

$884

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Thu 3/6

7:00 am-12:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Wed 3/19

8:10 am-12:00 pm

2 stops18h 50m

$942

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 7/7

7:10 am-6:20 pm

2 stops21h 10m

Seattle/Tacoma Intl

Fri 12/19

6:50 pm-11:00 pm

1 stop18h 10m

$1,162

HelsinkiSeattle

HEL - SEA

HELSEA

Helsinki-Vantaa

Mon 7/7

6:10 am-11:55 am

1 stop15h 45m

Seattle/Tacoma Intl

Sun 12/21

3:10 pm-1:10 am

2 stops24h 00m

$1,172

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 22 results
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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 February.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice 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.

Travel insights for flights from Helsinki to Seattle

Get recent, data-driven insights about flights from Helsinki to Seattle including ideal travel times, pricing trends, and more.

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 February 14, 2025.

Booking 88 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 February 21, 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 February 21, 2025.
Delta
8.0
Very good
8,217 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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
8,217 reviews
Delta
8.0
Very good
8,217 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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
1,273 reviews
Delta
8.0
Very good
8,217 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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
1,449 reviews
Delta
8.0
Very good
8,217 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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
8,761 reviews
Delta
8.0
Very good
8,217 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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
3,824 reviews
Delta
8.0
Very good
8,217 reviews

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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 $678, 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 Delta - these airlines can fly you to your destination from $757 and $785, respectively. Turkish Airlines is currently priced 19% 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 Icelandair ($649), Finnair ($767), and Turkish Airlines ($788).

  • What are the cheapest flights from Helsinki to Seattle?

    Looking for the cheapest flight from Helsinki to Seattle? While on average our users pay $862, our data indicates the cheapest price to be $690. 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
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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 Spokane flights
Helsinki to Portland 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 February 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$604Average$905FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$622Average$832FlexibilityNo cancel feeOn-time76%
FinnairCheapest$690Average$980FlexibilityNo cancel feeOn-time76%
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