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$306+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HEL
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 41 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 July 29, 2025.

Round-trip from

$538
(Cheapflightsfares)

One-way from

$306
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$1,173
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. 17% potential increase in price ($185 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 29, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/74:40 pmSFO - HEL
1 stop12h 45mScandinavian Airlines
Fri 11/146:15 amHEL - SFO
1 stop18h 20mScandinavian Airlines
Deal found 7/27$538
This Booking.com deal was found by Cheapflights users on 7/27. 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.
Sun 9/211:45 pmSFO - HEL
2 stops37h 05mAir Canada
Tue 10/76:10 amHEL - SFO
2 stops23h 41mAir Canada
Deal found 7/27$568
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/251:20 pmSFO - HEL
1 stop14h 55mMultiple Airlines
Tue 9/912:35 pmHEL - SFO
1 stop16h 00mMultiple Airlines
Deal found 7/27$571
This Flightnetwork deal was found by Cheapflights users on 7/28. 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.
Sun 8/109:05 pmSFO - HEL
1 stop16h 45mLufthansa
Tue 8/266:10 amHEL - SFO
1 stop16h 30mLufthansa
Deal found 7/28$582
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/2211:59 pmSFO - HEL
2 stops25h 56mUnited Airlines
Thu 10/96:10 amHEL - SFO
1 stop23h 45mUnited Airlines
Deal found 7/27$594
This Delta deal was found by Cheapflights users on 7/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/210:55 amSFO - HEL
2 stops19h 45mDelta
Tue 9/307:10 amHEL - SFO
2 stops21h 42mDelta
Deal found 7/26$595
This FlightHub deal was found by Cheapflights users on 7/28. 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 9/1412:40 pmSFO - HEL
1 stop20h 00mTurkish Airlines
Tue 9/307:35 pmHEL - SFO
1 stop25h 00mTurkish Airlines
Deal found 7/28$603

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 July 29, 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

Fri 11/7

4:40 pm-3:25 pm

1 stop12h 45m

Helsinki-Vantaa

Fri 11/14

6:15 am-2:35 pm

1 stop18h 20m

$538

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 9/21

1:45 pm-12:50 pm

2 stops37h 05m

Helsinki-Vantaa

Tue 10/7

6:10 am-7:51 pm

2 stops23h 41m

$568

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Mon 8/25

1:20 pm-2:15 pm

1 stop14h 55m

Helsinki-Vantaa

Tue 9/9

12:35 pm-6:35 pm

1 stop16h 00m

$571

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 8/10

9:05 pm-11:50 pm

1 stop16h 45m

Helsinki-Vantaa

Tue 8/26

6:10 am-12:40 pm

1 stop16h 30m

$582

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Mon 9/22

2:40 pm-4:40 pm

1 stop16h 00m

Helsinki-Vantaa

Thu 10/9

6:10 am-4:00 pm

1 stop19h 50m

$594

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 9/2

10:55 am-4:40 pm

2 stops19h 45m

Helsinki-Vantaa

Tue 9/30

7:10 am-6:52 pm

2 stops21h 42m

$595

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 9/14

12:40 pm-6:40 pm

1 stop20h 00m

Helsinki-Vantaa

Tue 9/30

7:35 pm-10:35 am

1 stop25h 00m

$603

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Thu 9/25

4:20 pm-10:25 pm

2 stops44h 05m

$306

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 9/14

11:40 am-12:50 pm

2 stops39h 10m

$478

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 9/14

9:05 pm-11:50 pm

1 stop16h 45m

$479

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 12 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 July 25, 2025.

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, 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 $1,081). 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 July 29, 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 July 29, 2025.
Read through reviews of airlines operating flights from San Francisco to Helsinki, such as Delta, United Airlines, and Turkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,977 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,893 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Turkish Airlines
7.3
Good
3,925 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Scandinavian Airlines
7.3
Good
1,449 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.1
Good
9,822 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 $538. Additional round-trip tickets that might be worth considering are offered by Air Canada and Lufthansa, with the lowest prices starting at $568 and $582, respectively. These flights start at 40% 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 $478 on Air Canada. Other airlines that offer cheap prices include Lufthansa from $479 and United Airlines from $489 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, 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 $1,081). 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$447Average$698FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$526Average$807FlexibilityNo cancel feeOn-time77%
FinnairCheapest$554Average$870FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$559Average$998FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$567Average$1,010FlexibilityNo cancel feeOn-time71%
Brussels AirlinesCheapest$578Average$824FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$582Average$1,004FlexibilityNo cancel feeOn-time69%
DeltaCheapest$582Average$981FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$583Average$662FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$597Average$652FlexibilityNo cancel feeOn-time77%

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