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$376+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — HEL
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 42 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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$622
(FlightHub)

One-way from

$376
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,135
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. 21% potential increase in price ($254 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This StudentUniverse deal was found by Cheapflights users on 4/17. 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.
Wed 10/2210:52 amSFO - HEL
1 stop17h 08mFinnair
Wed 10/2912:30 pmHEL - SFO
1 stop17h 09mFinnair
Deal found 4/17$615
This American Airlines deal was found by Cheapflights users on 4/17. 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 12/17:30 amSFO - HEL
1 stop17h 15mAmerican Airlines
Tue 12/1612:30 pmHEL - SFO
1 stop20h 08mAmerican Airlines
Deal found 4/17$620
This FlightHub deal was found by Cheapflights users on 4/17. 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.
Wed 9/1712:40 pmSFO - HEL
1 stop37h 00mTurkish Airlines
Wed 10/17:35 pmHEL - SFO
1 stop31h 05mTurkish Airlines
Deal found 4/17$622
This Air Canada deal was found by Cheapflights users on 4/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/197:40 pmSFO - HEL
2 stops37h 15mAir Canada
Tue 8/266:10 amHEL - SFO
2 stops23h 47mAir Canada
Deal found 4/17$639
This Travelocity deal was found by Cheapflights users on 4/17. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/234:35 pmSFO - HEL
2 stops20h 20mBritish Airways
Mon 11/37:35 pmHEL - SFO
1 stop29h 25mBritish Airways
Deal found 4/17$643
This KLM deal was found by Cheapflights users on 4/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/13:05 pmSFO - HEL
1 stop15h 35mMultiple Airlines
Wed 10/151:55 pmHEL - SFO
1 stop31h 50mMultiple Airlines
Deal found 4/17$648
This KLM deal was found by Cheapflights users on 4/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/231:45 pmSFO - HEL
1 stop24h 35mKLM
Mon 11/31:55 pmHEL - SFO
1 stop31h 55mKLM
Deal found 4/17$653
This Delta deal was found by Cheapflights users on 4/17. 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 10/2210:00 amSFO - HEL
2 stops20h 40mDelta
Wed 10/297:00 amHEL - SFO
2 stops21h 25mDelta
Deal found 4/17$662
This United Airlines deal was found by Cheapflights users on 4/17. 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 12/112:50 pmSFO - HEL
2 stops19h 50mUnited Airlines
Tue 12/166:50 amHEL - SFO
2 stops20h 05mUnited Airlines
Deal found 4/17$679
This FlightHub deal was found by Cheapflights users on 4/17. 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.
Tue 7/159:05 pmSFO - HEL
1 stop16h 45mLufthansa
Tue 8/266:10 amHEL - SFO
1 stop16h 30mLufthansa
Deal found 4/17$736
This Brussels Airlines deal was found by Cheapflights users on 4/17. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/132:40 pmSFO - HEL
1 stop24h 00mBrussels Airlines
Mon 8/181:35 pmHEL - SFO
1 stop33h 05mBrussels Airlines
Deal found 4/17$759
This oojo deal was found by Cheapflights users on 4/17. 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.
Sat 10/117:40 pmSFO - HEL
1 stop18h 15mScandinavian Airlines
Thu 10/167:10 amHEL - SFO
2 stops19h 20mScandinavian Airlines
Deal found 4/17$845

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 April 17, 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

Wed 9/17

12:40 pm-11:40 am

1 stop37h 00m

Helsinki-Vantaa

Wed 10/1

7:35 pm-4:40 pm

1 stop31h 05m

$622

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sat 7/19

7:40 pm-6:55 pm

2 stops37h 15m

Helsinki-Vantaa

Tue 8/26

6:10 am-7:57 pm

2 stops23h 47m

$639

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 9/23

4:35 pm-10:55 pm

2 stops20h 20m

Helsinki-Vantaa

Mon 11/3

7:35 pm-3:00 pm

1 stop29h 25m

$643

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Wed 10/1

3:05 pm-4:40 pm

1 stop15h 35m

Helsinki-Vantaa

Wed 10/15

1:55 pm-11:45 am

1 stop31h 50m

$648

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 9/23

1:45 pm-12:20 am

1 stop24h 35m

Helsinki-Vantaa

Mon 11/3

1:55 pm-11:50 am

1 stop31h 55m

$653

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 7/15

2:40 pm-4:50 pm

1 stop16h 10m

Helsinki-Vantaa

Wed 8/20

6:10 am-9:26 am

2 stops37h 16m

$727

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Tue 7/15

9:05 pm-11:50 pm

1 stop16h 45m

Helsinki-Vantaa

Tue 8/26

6:10 am-12:40 pm

1 stop16h 30m

$736

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Mon 5/5

7:20 am-4:40 pm

2 stops23h 20m

Helsinki-Vantaa

Sun 5/11

7:00 am-11:45 am

1 stop14h 45m

$752

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sun 7/13

2:40 pm-12:40 am

1 stop24h 00m

Helsinki-Vantaa

Mon 8/18

1:35 pm-12:40 pm

1 stop33h 05m

$759

San FranciscoHelsinki

SFO - HEL

SFOHEL

San Francisco

Sat 10/11

7:40 pm-11:55 pm

1 stop18h 15m

Helsinki-Vantaa

Thu 10/16

7:10 am-4:30 pm

2 stops19h 20m

$845

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 25 results
1
2
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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 San Francisco-Helsinki flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on San Francisco-Helsinki flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 April 11, 2025.

The best time to book flights from San Francisco to Helsinki is 42 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 $1,123). 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 April 17, 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.

Rainfall in Helsinki by month

Plan your trip to Helsinki by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Helsinki ranges from 1.2 - 2.8 inches per month. August is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit Helsinki when rainfall is around 1.2 in.

Temperature in Helsinki by month

Plan your trip to Helsinki by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Helsinki, 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 60.8 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 F).

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 April 17, 2025.
See what other customers who have flown with Delta, Alaska Airlines and Finnair from San Francisco to Helsinki have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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.
Alaska Airlines
8.0
Very good
9,887 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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.
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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 France
7.5
Good
1,435 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
8,667 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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 Turkish Airlines is currently your cheapest option to Helsinki, with prices starting at $622. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at $724 and $727, respectively. These flights start at 34% 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 $479 on Alaska Airlines. Other airlines that offer cheap prices include American Airlines from $563 and Delta from $581 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 $1,123). 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Vantaa
Espoo
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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$447Average$938FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$526Average$787FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$551Average$946FlexibilityNo cancel feeOn-time70%
FinnairCheapest$552Average$856FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$567Average$1,007FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$572Average$1,150FlexibilityNo cancel feeOn-time67%
Brussels AirlinesCheapest$572Average$819FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$582Average$1,158FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$597Average$684FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$639Average$1,184FlexibilityNo cancel feeOn-time77%

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