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$297+ 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HEL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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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 September 11, 2025.

Round-trip from

$485
(Ticket)

One-way from

$297
(Kiwi.com)

Popular in

April

Cheapest in

November

Average price

$881
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. 4% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($27 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 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 September 11, 2025.

This Ticket deal was found by Cheapflights users on 9/10. 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.
Mon 10/278:25 amSFO - HEL
2 stops25h 25mAir Canada
Wed 11/126:55 amHEL - SFO
2 stops37h 44mAir Canada
Deal found 9/10$485
This Flysmarter deal was found by Cheapflights users on 9/10. 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.
Mon 10/271:35 pmSFO - HEL
1 stop15h 20mMultiple Airlines
Wed 11/125:00 pmHEL - SFO
1 stop16h 59mMultiple Airlines
Deal found 9/10$487
This Scandinavian Airlines deal was found by Cheapflights users on 9/11. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:00 amSFO - HEL
2 stops28h 15mScandinavian Airlines
Mon 10/274:05 pmHEL - SFO
1 stop33h 05mScandinavian Airlines
Deal found 9/11$490
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Mon 10/278:08 amSFO - HEL
1 stop17h 37mAmerican Airlines
Wed 11/1212:30 pmHEL - SFO
1 stop18h 26mAmerican Airlines
Deal found 9/10$494
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 10/64:30 pmSFO - HEL
1 stop15h 20mAmerican Airlines
Tue 10/2112:35 pmHEL - SFO
1 stop18h 07mAmerican Airlines
Deal found 9/9$502
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/228:08 amSFO - HEL
1 stop16h 37mAmerican Airlines
Wed 11/1212:30 pmHEL - SFO
1 stop18h 26mAmerican Airlines
Deal found 9/10$503
This oojo deal was found by Cheapflights users on 9/11. 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.
Mon 10/279:30 pmSFO - HEL
2 stops32h 55mScandinavian Airlines
Wed 11/128:55 pmHEL - SFO
2 stops27h 40mScandinavian Airlines
Deal found 9/11$510

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 September 11, 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 1/27

11:26 am-3:20 pm

1 stop17h 54m

Helsinki-Vantaa

Tue 2/17

4:00 pm-10:59 pm

1 stop16h 59m

$488

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 1/27

10:40 am-3:15 pm

2 stops18h 35m

Helsinki-Vantaa

Tue 2/17

12:30 pm-8:52 pm

1 stop18h 22m

$508

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 2/10

8:25 am-1:10 pm

2 stops18h 45m

Helsinki-Vantaa

Wed 2/18

6:55 am-12:40 pm

1 stop15h 45m

$513

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Fri 2/6

7:00 am-3:25 pm

2 stops22h 25m

Helsinki-Vantaa

Mon 2/9

6:15 am-2:35 pm

1 stop18h 20m

$523

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Mon 1/26

12:43 am-6:50 pm

3 stops32h 07m

Helsinki-Vantaa

Tue 2/17

7:05 am-3:55 pm

1 stop18h 50m

$529

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 9/30

6:45 am-12:50 pm

2 stops20h 05m

Helsinki-Vantaa

Wed 10/8

6:40 am-12:50 pm

1 stop16h 10m

$531

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Mon 10/27

3:40 pm-1:20 am

1 stop24h 40m

Helsinki-Vantaa

Wed 11/12

6:55 am-5:38 pm

2 stops20h 43m

$534

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Mon 10/27

12:35 pm-8:20 pm

2 stops22h 45m

Helsinki-Vantaa

Wed 11/12

8:55 pm-2:35 pm

2 stops27h 40m

$537

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Wed 1/28

4:15 pm-9:05 pm

3 stops18h 50m

Helsinki-Vantaa

Wed 2/4

4:10 pm-2:35 pm

2 stops32h 25m

$538

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Mon 1/19

12:43 am-6:50 pm

3 stops32h 07m

Helsinki-Vantaa

Tue 2/10

7:05 am-9:05 pm

2 stops24h 00m

$539

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 results
1
2

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 August 29, 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, November is the cheapest month in which you can book a flight from San Francisco to Helsinki (average of $444). Flying from San Francisco to Helsinki in June is currently the most expensive (average of $1,082). 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 September 11, 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 18% 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 September 11, 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
1,323 reviews

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.5

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Finnair
7.6
Good
1,323 reviews
Finnair
7.6
Good
1,323 reviews

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.5

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Scandinavian Airlines
7.4
Good
1,484 reviews
Finnair
7.6
Good
1,323 reviews

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.5

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
United Airlines
7.4
Good
8,937 reviews
Finnair
7.6
Good
1,323 reviews

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.5

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
American Airlines
7.2
Good
10,000 reviews
Finnair
7.6
Good
1,323 reviews

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.5

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.
Lufthansa
6.8
Okay
7,409 reviews
Finnair
7.6
Good
1,323 reviews

Crew

8.1

Boarding

7.6

Entertainment

6.9

Overall

7.6

Food

6.7

Comfort

7.5

Reviews

1 / 20
6.0
Good

Rowland,Dec 2024

FRA - HEL

Finnair need to get a better system for boarding. Hundreds of passengers all attempting to get their boarding cards and passports checked at the gate and then get onto the aircraft is ridiculous, time consuming and frankly unfair to passengers.

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 54m. Finnair provides one of the quickest options available for as low as $488. 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 KLM is currently your cheapest option to Helsinki, with prices starting at $419. Additional round-trip tickets that might be worth considering are offered by Scandinavian Airlines and British Airways, with the lowest prices starting at $526 and $562, respectively. These flights start at 53% 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, November is the cheapest month in which you can book a flight from San Francisco to Helsinki (average of $444). Flying from San Francisco to Helsinki in June is currently the most expensive (average of $1,082). 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$419Average$663FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$526Average$815FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$562Average$1,003FlexibilityNo cancel feeOn-time70%
FinnairCheapest$564Average$908FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$567Average$1,019FlexibilityNo cancel feeOn-time71%
Brussels AirlinesCheapest$578Average$859FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$583Average$639FlexibilityNo cancel feeOn-time77%
DeltaCheapest$586Average$1,051FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$597Average$652FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$597Average$936FlexibilityNo cancel feeOn-time69%

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