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$292+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HEL
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Cheap 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 March 10, 2026.

This oojo deal was found by Cheapflights users on 3/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/214:45 pm
SFO
-
HEL
1 stop31h 50m
Scandinavian Airlines
Tue 4/2811:15 am
HEL
-
SFO
1 stop13h 25m
Scandinavian Airlines
Deal found 3/7$506
This Mytrip deal was found by Cheapflights users on 3/6. 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.
Sun 4/124:45 pm
SFO
-
HEL
1 stop22h 45m
Scandinavian Airlines
Sun 4/269:05 pm
HEL
-
SFO
1 stop27h 35m
Scandinavian Airlines
Deal found 3/6$515
This oojo deal was found by Cheapflights users on 3/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:45 pm
SFO
-
HEL
1 stop17h 40m
Scandinavian Airlines
Mon 10/269:00 pm
HEL
-
SFO
1 stop27h 35m
Scandinavian Airlines
Deal found 3/6$516
This oojo deal was found by Cheapflights users on 3/5. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/194:45 pm
SFO
-
HEL
2 stops21h 05m
Scandinavian Airlines
Sun 4/269:05 pm
HEL
-
SFO
1 stop27h 35m
Scandinavian Airlines
Deal found 3/5$537
This FlightHub deal was found by Cheapflights users on 3/5. 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.
Sun 4/124:45 pm
SFO
-
HEL
1 stop12h 35m
Scandinavian Airlines
Sun 4/199:05 pm
HEL
-
SFO
1 stop27h 35m
Scandinavian Airlines
Deal found 3/5$542
This FlightHub deal was found by Cheapflights users on 3/5. 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.
Sun 4/124:45 pm
SFO
-
HEL
2 stops21h 05m
Scandinavian Airlines
Mon 4/209:05 pm
HEL
-
SFO
1 stop27h 35m
Scandinavian Airlines
Deal found 3/5$543

Find 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$506
(oojo)

One-way from

$292
(Kiwi.com)

Popular in

April

Cheapest in

February

Average price

$658
Provider with most accurate pricing for San Francisco-Helsinki-Vantaa flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Helsinki-Vantaa flights.
Search Deals
From San Francisco to Helsinki-Vantaa
Search Deals
One-way flight from San Francisco to Helsinki-Vantaa
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 10, 2026.
Use the filters below to find and compare flights from San Francisco to Helsinki that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 8/25

4:45 pm-8:35 pm

2 stops17h 50m

Helsinki-Vantaa

Thu 9/3

6:10 am-2:40 pm

1 stop18h 30m

$570

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Thu 8/20

4:45 pm-3:20 pm

1 stop12h 35m

Helsinki-Vantaa

Sun 8/30

4:00 pm-2:40 pm

1 stop32h 40m

$654
Quickest round-trip

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Thu 8/20

4:45 pm-3:20 pm

1 stop12h 35m

Helsinki-Vantaa

Sat 8/29

6:10 am-2:40 pm

1 stop18h 30m

$704

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Fri 4/17

5:59 am-5:40 pm

2 stops25h 41m

Helsinki-Vantaa

Tue 4/28

7:00 am-11:45 am

1 stop14h 45m

$808

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sat 4/11

11:52 pm-6:55 pm

2 stops33h 03m

Helsinki-Vantaa

Sun 4/19

6:45 am-1:25 pm

2 stops40h 40m

$814

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 4/12

6:33 am-6:55 pm

2 stops26h 22m

Helsinki-Vantaa

Sun 4/19

6:45 am-9:20 pm

2 stops24h 35m

$815

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Fri 4/17

5:59 am-5:40 pm

2 stops25h 41m

Helsinki-Vantaa

Mon 4/27

1:55 pm-7:20 pm

2 stops39h 25m

$818

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Fri 4/17

5:59 am-1:05 pm

2 stops21h 06m

Helsinki-Vantaa

Sun 4/26

7:00 am-11:45 am

1 stop14h 45m

$859

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Thu 4/23

7:15 pm-12:40 am

1 stop19h 25m

Helsinki-Vantaa

Thu 4/30

1:50 pm-1:16 am

2 stops21h 26m

$873

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Fri 4/10

5:50 am-1:05 pm

2 stops21h 15m

Helsinki-Vantaa

Mon 4/20

7:00 am-7:03 pm

2 stops22h 03m

$918

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 21 resultsSorted by cheapest first
1
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3

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Helsinki flight deals on Cheapflights vs. FlightHub >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 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 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 March 6, 2026.

The best time to book flights from San Francisco to Helsinki is 41 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 $484). Flying from San Francisco to Helsinki in June is currently the most expensive (average of $908). 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.

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 March 10, 2026.
Read through reviews of airlines operating flights from San Francisco to Helsinki, such as Finnair,United Airlines, andScandinavian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,371 reviews

Food

6.7

Boarding

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.5

Overall

7.6

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Finnair
7.6
Good
1,371 reviews
Finnair
7.6
Good
1,371 reviews

Food

6.7

Boarding

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.5

Overall

7.6

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
United Airlines
7.4
Good
9,409 reviews
Finnair
7.6
Good
1,371 reviews

Food

6.7

Boarding

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.5

Overall

7.6

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Scandinavian Airlines
7.3
Good
1,708 reviews
Finnair
7.6
Good
1,371 reviews

Food

6.7

Boarding

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.5

Overall

7.6

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
American Airlines
7.1
Good
11,409 reviews
Finnair
7.6
Good
1,371 reviews

Food

6.7

Boarding

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.5

Overall

7.6

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Lufthansa
6.8
Okay
7,840 reviews
Finnair
7.6
Good
1,371 reviews

Food

6.7

Boarding

7.7

Entertainment

6.9

Crew

8.2

Comfort

7.5

Overall

7.6

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.

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 17h 50m. Scandinavian Airlines provides one of the quickest options available for as low as $570. 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 Brussels Airlines is currently your cheapest option to Helsinki, with prices starting at $483. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and Delta, with the lowest prices starting at $496 and $538, respectively. These flights start at 42% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from San Francisco to Helsinki one-way?

    One-way options have recently been found by users for as low as $286 on American Airlines. Other airlines that offer cheap prices include Finnair from $432 and Lufthansa from $482 one-way.

  • 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 $484). Flying from San Francisco to Helsinki in June is currently the most expensive (average of $908). 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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Alternative routes for San Francisco to Helsinki

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from San Francisco to Helsinki

Discover the top 9 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Brussels AirlinesCheapest$483Average$859FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$496Average$586FlexibilityNo cancel feeOn-time77%
DeltaCheapest$538Average$1,083FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$556Average$648FlexibilityNo cancel feeOn-time77%
FinnairCheapest$566Average$979FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$566Average$812FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$568Average$994FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$615Average$826FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$685Average$1,004FlexibilityNo cancel feeOn-time70%

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