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$556+ Cheap flights from Helsinki (HEL) to San Francisco (SFO)

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 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SFO
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from Helsinki-Vantaa to San Francisco are usually found in February or November, booked 77 days in advance, depart on a Wednesday or Friday and return on a Sunday

Cheap flight deals from Helsinki to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Helsinki (HEL) to San Francisco (SFO). 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 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$718
(KLM)

One-way from

$556
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$800
Provider with most accurate pricing for Helsinki-Vantaa-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Helsinki-Vantaa-San Francisco flights.
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From Helsinki-Vantaa to San Francisco
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One-way flight from Helsinki-Vantaa to San Francisco
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Highest demand for flights based on searches. 9% potential increase in price ($90 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Helsinki to San Francisco

Cheapest flights from Helsinki to San Francisco
Explore the most affordable flight options available from Helsinki to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This KLM deal was found by Cheapflights users on 3/26. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/226:25 pmHEL - SFO
1 stop27h 20mMultiple Airlines
Thu 5/293:05 pmSFO - HEL
1 stop22h 15mMultiple Airlines
Deal found 3/26$718
This Ticket deal was found by Cheapflights users on 3/26. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/277:30 amHEL - SFO
2 stops20h 25mScandinavian Airlines
Mon 11/34:40 pmSFO - HEL
1 stop21h 15mScandinavian Airlines
Deal found 3/26$719
This Ticket deal was found by Cheapflights users on 3/26. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/17:00 amHEL - SFO
1 stop14h 45mAir France
Thu 5/83:05 pmSFO - HEL
1 stop22h 15mAir France
Deal found 3/26$725
This Delta deal was found by Cheapflights users on 3/26. 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.
Thu 5/16:40 amHEL - SFO
1 stop16h 10mDelta
Thu 5/810:00 amSFO - HEL
2 stops21h 40mDelta
Deal found 3/26$729
This Ticket deal was found by Cheapflights users on 3/26. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/106:00 amHEL - SFO
1 stop23h 00mLufthansa
Thu 4/171:45 pmSFO - HEL
1 stop24h 05mLufthansa
Deal found 3/26$736
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Thu 9/46:10 amHEL - SFO
2 stops38h 18mUnited Airlines
Wed 9/1012:43 amSFO - HEL
2 stops29h 57mUnited Airlines
Deal found 3/26$738
This Turkish Airlines deal was found by Cheapflights users on 3/26. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/87:35 pmHEL - SFO
1 stop25h 00mTurkish Airlines
Tue 4/156:45 pmSFO - HEL
1 stop30h 55mTurkish Airlines
Deal found 3/26$762
This Finnair deal was found by Cheapflights users on 3/26. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/34:00 pmHEL - SFO
1 stop15h 14mFinnair
Mon 5/1910:20 amSFO - HEL
1 stop14h 25mFinnair
Deal found 3/26$776
This Travelis deal was found by Cheapflights users on 3/26. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:25 pmHEL - SFO
1 stop27h 20mKLM
Thu 8/211:45 pmSFO - HEL
1 stop17h 55mKLM
Deal found 3/26$797
This Sembo deal was found by Cheapflights users on 3/26. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/253:00 pmHEL - SFO
2 stops20h 34mIcelandair
Thu 10/211:59 amSFO - HEL
2 stops16h 01mIcelandair
Deal found 3/26$813
This American Airlines deal was found by Cheapflights users on 3/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/104:00 pmHEL - SFO
1 stop15h 00mAmerican Airlines
Sat 5/1710:20 amSFO - HEL
1 stop14h 25mAmerican Airlines
Deal found 3/26$815
This Flightnetwork deal was found by Cheapflights users on 3/26. 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.
Thu 8/74:50 pmHEL - SFO
1 stop17h 20mBritish Airways
Thu 8/144:35 pmSFO - HEL
1 stop15h 15mBritish Airways
Deal found 3/26$870

Cheapflights Fare Finder

Customize your flight search to find flights from Helsinki to San Francisco 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 28, 2025.
Use the filters below to find and compare flights from Helsinki to San Francisco that are best for you.

Fly from

Helsinki

Fly to

San Francisco

Route

Depart

Return

Price

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Thu 5/22

6:25 pm-11:45 am

1 stop27h 20m

San Francisco

Thu 5/29

3:05 pm-11:20 pm

1 stop22h 15m

$718

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Thu 5/1

7:00 am-11:45 am

1 stop14h 45m

San Francisco

Thu 5/8

3:05 pm-11:20 pm

1 stop22h 15m

$725

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Mon 5/19

7:15 am-4:30 pm

2 stops19h 15m

San Francisco

Mon 5/26

7:40 pm-12:05 am

1 stop18h 25m

$727

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Thu 5/1

6:40 am-12:50 pm

1 stop16h 10m

San Francisco

Thu 5/8

10:00 am-5:40 pm

2 stops21h 40m

$729

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Thu 4/10

6:00 am-7:00 pm

1 stop23h 00m

San Francisco

Thu 4/17

1:45 pm-11:50 pm

1 stop24h 05m

$736

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Thu 9/4

6:10 am-10:28 am

2 stops38h 18m

San Francisco

Wed 9/10

12:43 am-4:40 pm

2 stops29h 57m

$738

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Tue 4/8

7:35 pm-10:35 am

1 stop25h 00m

San Francisco

Tue 4/15

6:45 pm-11:40 am

1 stop30h 55m

$762

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Sat 5/3

4:00 pm-9:14 pm

1 stop15h 14m

San Francisco

Mon 5/19

10:20 am-10:45 am

1 stop14h 25m

$776

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Thu 8/14

6:25 pm-11:45 am

1 stop27h 20m

San Francisco

Thu 8/21

1:45 pm-5:40 pm

1 stop17h 55m

$797

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Sat 5/10

4:00 pm-9:00 pm

1 stop15h 00m

San Francisco

Sat 5/17

8:16 am-10:45 am

1 stop16h 29m

$815

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 20 results
1
2

Compare providers for flights from Helsinki to San Francisco

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 Helsinki to San Francisco in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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 Helsinki-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helsinki-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Helsinki-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Helsinki-San Francisco 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 Helsinki-San Francisco 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 Helsinki to San Francisco

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

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

Use this chart to determine the optimal time to book a round-trip flight from Helsinki to San Francisco. Price data was last updated on March 21, 2025.

The price you pay for your flight from Helsinki to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Helsinki to San Francisco (average of $276). Flying from Helsinki to San Francisco in June is currently the most expensive (average of $398). 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 HEL to SFO?

Find hourly flight availability from Helsinki to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

A simple way to save on the total cost of your ticket is to fly from Helsinki to San Francisco in the morning. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight at noon.

Rainfall in San Francisco by month

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

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

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

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated March 28, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from Helsinki to San Francisco to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.4
Good
1,424 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,603 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

    According to our current data, Air France ($725), Scandinavian Airlines ($727), and Delta ($729) offers the cheapest pricing from Helsinki to San Francisco. You may be able to fly from Helsinki to San Francisco for 15% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from Helsinki to San Francisco are Scandinavian Airlines ($770), Finnair ($790), and Icelandair ($1,050).

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Helsinki to San Francisco (average of $276). Flying from Helsinki to San Francisco in June is currently the most expensive (average of $398). 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
Roseville
Mountain View
Santa Cruz
Turlock
Fairfield
South San Francisco
Manteca
Sausalito
Richmond
Watsonville
Hollister
Milpitas
Antioch
Hayward
Vallejo
Newark
Alameda
Campbell
Daly City
Pacific Grove

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from Helsinki to San Francisco

Discover the top 5 airlines that operate flights from Helsinki to San Francisco. 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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$683Average$853FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$715Average$935FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$768Average$939FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$867Average$951FlexibilityNo cancel feeOn-time71%
FinnairCheapest$899Average$1,018FlexibilityNo cancel feeOn-time76%
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