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$282+ Cheap flights from San Francisco (SFO) to Helsinki (HEL)

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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HEL
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
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 San Francisco to Helsinki-Vantaa are usually found in November or October, booked 16 days in advance, depart on a Sunday or Tuesday and return on a Wednesday

Cheap flight deals from San Francisco to Helsinki

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Helsinki (HEL). 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 October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$451
(Justfly.com)

One-way from

$282
(Kiwi.com)

Popular in

April

Cheapest in

November

Average price

$685
Provider with most accurate pricing for San Francisco-Helsinki-Vantaa flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Helsinki-Vantaa flights.
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From San Francisco to Helsinki-Vantaa
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One-way flight from San Francisco to Helsinki-Vantaa
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Highest demand for flights based on searches. 5% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from San Francisco to Helsinki

Cheapest flights from San Francisco to Helsinki
Explore the most affordable flight options available from San Francisco to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2025.

This Flightnetwork deal was found by Cheapflights users on 10/26. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/268:30 amSFO - HEL
2 stops18h 40mAir Canada
Wed 12/36:55 amHEL - SFO
2 stops24h 27mAir Canada
Deal found 10/26$467
This Mytrip deal was found by Cheapflights users on 10/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2612:00 pmSFO - HEL
2 stops18h 30mMultiple Airlines
Wed 12/36:55 amHEL - SFO
1 stop15h 45mMultiple Airlines
Deal found 10/26$471
This Mytrip deal was found by Cheapflights users on 10/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/262:40 pmSFO - HEL
1 stop24h 40mLufthansa
Wed 12/36:55 amHEL - SFO
1 stop15h 45mLufthansa
Deal found 10/26$479
This United Airlines deal was found by Cheapflights users on 10/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/272:30 pmSFO - HEL
1 stop19h 20mUnited Airlines
Tue 11/111:55 pmHEL - SFO
1 stop16h 15mUnited Airlines
Deal found 10/26$480
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Mon 11/36:00 amSFO - HEL
2 stops26h 50mUnited Airlines
Tue 11/117:05 amHEL - SFO
1 stop18h 50mUnited Airlines
Deal found 10/27$483
This Priceline deal was found by Cheapflights users on 10/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:15 pmSFO - HEL
2 stops40h 35mMultiple Airlines
Tue 12/167:05 amHEL - SFO
1 stop15h 35mMultiple Airlines
Deal found 10/27$485
This Booking.com deal was found by Cheapflights users on 10/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/22:40 pmSFO - HEL
1 stop15h 50mLufthansa
Tue 12/167:05 amHEL - SFO
1 stop15h 35mLufthansa
Deal found 10/27$487
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Mon 11/36:50 pmSFO - HEL
1 stop20h 30mMultiple Airlines
Tue 11/111:55 pmHEL - SFO
1 stop16h 15mMultiple Airlines
Deal found 10/27$492
This Gotogate deal was found by Cheapflights users on 10/27. 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.
Mon 12/18:38 amSFO - HEL
2 stops22h 02mMultiple Airlines
Tue 12/167:05 amHEL - SFO
1 stop15h 35mMultiple Airlines
Deal found 10/27$493
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 11/41:25 pmSFO - HEL
2 stops19h 25mUnited Airlines
Wed 11/126:55 amHEL - SFO
2 stops22h 15mUnited Airlines
Deal found 10/27$494

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Helsinki 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 October 27, 2025.
Use the filters below to find and compare flights from San Francisco to Helsinki that are best for you.

Fly from

San Francisco

Fly to

Helsinki

Route

Depart

Return

Price

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 1/13

4:15 pm-8:20 pm

2 stops18h 05m

Helsinki-Vantaa

Mon 3/23

7:00 am-3:35 pm

2 stops17h 35m

$453

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 1/25

7:00 am-3:25 pm

2 stops22h 25m

Helsinki-Vantaa

Sun 2/8

7:40 pm-2:35 pm

2 stops28h 55m

$475

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Wed 2/4

1:00 pm-1:35 am

2 stops26h 35m

Helsinki-Vantaa

Sun 2/15

6:15 am-2:35 pm

1 stop18h 20m

$477

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Mon 2/2

7:00 am-10:40 am

2 stops17h 40m

Helsinki-Vantaa

Mon 2/9

6:15 am-2:35 pm

1 stop18h 20m

$477

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Mon 12/1

1:30 pm-6:50 pm

1 stop19h 20m

Helsinki-Vantaa

Tue 12/16

7:05 am-12:40 pm

1 stop15h 35m

$479

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 1/20

11:15 am-3:20 pm

1 stop18h 05m

Helsinki-Vantaa

Tue 2/10

4:50 pm-12:47 am

1 stop17h 57m

$482

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 2/10

7:10 am-10:40 am

2 stops17h 30m

Helsinki-Vantaa

Sat 2/21

6:30 pm-2:35 pm

2 stops30h 05m

$485

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 1/20

4:15 pm-8:20 pm

2 stops18h 05m

Helsinki-Vantaa

Tue 2/10

8:55 pm-2:35 pm

2 stops51h 40m

$487

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Wed 11/26

6:50 pm-1:20 am

1 stop20h 30m

Helsinki-Vantaa

Thu 12/4

6:55 am-12:40 pm

1 stop15h 45m

$492

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 12/2

10:37 pm-6:50 pm

2 stops34h 13m

Helsinki-Vantaa

Tue 12/16

7:05 am-5:40 pm

2 stops20h 35m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

Showing 1-10 of 19 results
1
2

Compare providers for flights from San Francisco to Helsinki

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 San Francisco to Helsinki in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 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 San Francisco-Helsinki flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Francisco-Helsinki flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Francisco-Helsinki flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Helsinki 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 San Francisco-Helsinki 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 San Francisco to Helsinki

Have a flexible travel schedule? Discover the best time to fly to Helsinki from San Francisco 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 San Francisco to Helsinki

How far ahead should I book a flight from San Francisco to Helsinki?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Helsinki. Price data was last updated on October 24, 2025.

The best time to book flights from San Francisco to Helsinki is 16 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Francisco to Helsinki?

Currently, October is the cheapest month in which you can book a flight from San Francisco to Helsinki (average of $494). Flying from San Francisco to Helsinki in July is currently the most expensive (average of $911). 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 SFO to HEL?

Find hourly flight availability from San Francisco to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

One of the essential ways to save on airfare from San Francisco to Helsinki is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 17% on airfare.

What is the cheapest day to fly from San Francisco to Helsinki?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Helsinki. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Helsinki flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Helsinki

Get insights into the airlines that provide service to Helsinki. 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 Helsinki. Reviews last updated October 27, 2025.
Read through reviews of airlines operating flights from San Francisco to Helsinki, such as Finnair, Scandinavian Airlines, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,333 reviews

Comfort

7.4

Overall

7.6

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Finnair
7.6
Good
1,333 reviews
Finnair
7.6
Good
1,333 reviews

Comfort

7.4

Overall

7.6

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Scandinavian Airlines
7.4
Good
1,543 reviews
Finnair
7.6
Good
1,333 reviews

Comfort

7.4

Overall

7.6

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
United Airlines
7.4
Good
8,999 reviews
Finnair
7.6
Good
1,333 reviews

Comfort

7.4

Overall

7.6

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
American Airlines
7.2
Good
11,029 reviews
Finnair
7.6
Good
1,333 reviews

Comfort

7.4

Overall

7.6

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Lufthansa
6.8
Okay
7,532 reviews
Finnair
7.6
Good
1,333 reviews

Comfort

7.4

Overall

7.6

Entertainment

6.9

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Sep 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Helsinki. 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 San Francisco to Helsinki?

    A quick flight from San Francisco to Helsinki can take about 18h 05m. Scandinavian Airlines provides one of the quickest options available for as low as $453. San Francisco and Helsinki are separated by a distance of 5417 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on Scandinavian Airlines is currently your cheapest option to Helsinki, with prices starting at $496. Additional round-trip tickets that might be worth considering are offered by Air France and Lufthansa, with the lowest prices starting at $569 and $577, respectively. These flights start at 44% lower than the current average price 3 months from now.

  • Can I find deals for flights from San Francisco to Helsinki that include hotel bookings?

    Yes. In addition to deals on San Francisco to Helsinki flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Helsinki?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Helsinki.

  • Can I find deals for business class flights from San Francisco to Helsinki?

    Yes. Cheapflights offers flight deals from San Francisco to Helsinki 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 San Francisco to Helsinki?

    Currently, October is the cheapest month in which you can book a flight from San Francisco to Helsinki (average of $494). Flying from San Francisco to Helsinki in July is currently the most expensive (average of $911). 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
Vantaa
Lahti

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Top 10 airlines flying from San Francisco to Helsinki

Discover the top 10 airlines that operate flights from San Francisco to Helsinki. 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 October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$496Average$796FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$569Average$872FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$577Average$975FlexibilityNo cancel feeOn-time76%
Brussels AirlinesCheapest$578Average$887FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$580Average$910FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$580Average$1,043FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$615Average$933FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$623Average$652FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$685Average$1,012FlexibilityNo cancel feeOn-time70%
DeltaCheapest$705Average$1,081FlexibilityNo cancel feeOn-timeN/A

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