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$672+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SFO
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$724
(Kiwi.com)

One-way from

$672
(Cheapflightsfares)

Popular in

July

Cheapest in

February

Average price

$1,044
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. 11% potential increase in price ($105 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 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 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 July 29, 2025.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/278:30 amHEL - SFO
2 stops40h 00mMultiple Airlines
Sun 9/1411:48 amSFO - HEL
1 stop17h 32mMultiple Airlines
Deal found 7/28$724
This Travelis 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:10 amHEL - SFO
1 stop16h 30mLufthansa
Wed 9/177:25 pmSFO - HEL
1 stop18h 50mLufthansa
Deal found 7/28$733
This Delta deal was found by Cheapflights users on 7/29. 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 8/267:00 amHEL - SFO
1 stop14h 45mDelta
Tue 9/27:05 amSFO - HEL
2 stops23h 35mDelta
Deal found 7/29$744
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Sat 8/306:10 amHEL - SFO
1 stop16h 30mUnited Airlines
Sun 9/147:25 pmSFO - HEL
1 stop19h 15mUnited Airlines
Deal found 7/29$745
This Flysmarter 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:15 amHEL - SFO
1 stop18h 20mScandinavian Airlines
Sat 11/84:40 pmSFO - HEL
1 stop21h 25mScandinavian Airlines
Deal found 7/27$767
This Brussels 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:55 amHEL - SFO
1 stop15h 45mBrussels Airlines
Tue 11/112:40 pmSFO - HEL
1 stop24h 35mBrussels Airlines
Deal found 7/27$809
This Turkish Airlines 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/247:35 pmHEL - SFO
1 stop31h 05mTurkish Airlines
Mon 9/1512:40 pmSFO - HEL
1 stop37h 00mTurkish Airlines
Deal found 7/28$823
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:30 amHEL - SFO
2 stops18h 30mAir France
Sun 11/99:00 amSFO - HEL
2 stops18h 10mAir France
Deal found 7/27$825
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/112:45 pmHEL - SFO
2 stops54h 43mAir Canada
Tue 11/1111:11 amSFO - HEL
2 stops21h 29mAir Canada
Deal found 7/27$830
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/27:00 amHEL - SFO
2 stops19h 00mKLM
Sat 11/81:45 pmSFO - HEL
2 stops17h 40mKLM
Deal found 7/27$847
This Icelandair 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/41:55 pmHEL - SFO
2 stops18h 46mIcelandair
Tue 11/118:15 amSFO - HEL
2 stops18h 40mIcelandair
Deal found 7/27$854

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 July 29, 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

Wed 8/27

8:30 am-2:30 pm

2 stops40h 00m

San Francisco

Sun 9/14

11:48 am-3:20 pm

1 stop17h 32m

$724

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Wed 8/27

6:10 am-12:40 pm

1 stop16h 30m

San Francisco

Wed 9/17

7:25 pm-12:15 am

1 stop18h 50m

$733

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Tue 8/26

7:00 am-11:45 am

1 stop14h 45m

San Francisco

Tue 9/2

7:05 am-4:40 pm

2 stops23h 35m

$744

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Sat 8/30

6:10 am-12:40 pm

1 stop16h 30m

San Francisco

Sun 9/14

7:25 pm-12:40 am

1 stop19h 15m

$745

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Sat 11/1

6:15 am-3:35 pm

1 stop18h 20m

San Francisco

Sat 11/8

4:40 pm-12:05 am

1 stop21h 25m

$767

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Fri 10/31

6:55 am-1:40 pm

1 stop15h 45m

San Francisco

Tue 11/11

2:40 pm-1:15 am

1 stop24h 35m

$809

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Sun 8/24

7:35 pm-4:40 pm

1 stop31h 05m

San Francisco

Mon 9/15

12:40 pm-11:40 am

1 stop37h 00m

$823

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Sat 11/1

6:30 am-4:00 pm

2 stops18h 30m

San Francisco

Sun 11/9

9:00 am-1:10 pm

2 stops18h 10m

$825

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Sat 11/1

12:45 pm-10:28 am

2 stops54h 43m

San Francisco

Tue 11/11

11:11 am-6:40 pm

2 stops21h 29m

$830

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Sun 11/2

7:00 am-5:00 pm

2 stops19h 00m

San Francisco

Sat 11/8

1:45 pm-5:25 pm

2 stops17h 40m

$847

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 17 results
1
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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 July 25, 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 $358). 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 July 29, 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.

How much does it cost to fly round-trip from Helsinki to San Francisco?

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 July 29, 2025.
Get a feel of what it's like to fly with Delta, KLM, and Air France from Helsinki to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
1,383 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
8,899 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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
Turkish Airlines
7.3
Good
3,925 reviews
Delta
8.0
Very good
7,977 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

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, Lufthansa ($733), Delta ($744), and United Airlines ($745) offers the cheapest pricing from Helsinki to San Francisco. You may be able to fly from Helsinki to San Francisco for 14% 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 WestJet ($672), Lufthansa ($778), and Delta ($814).

  • 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 $358). 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
Roseville
Mountain View
Santa Cruz
South San Francisco
Livermore
Turlock
Manteca
Antioch
Hollister
Watsonville
Sunnyvale
Newark
Milpitas
Campbell
Foster City
Capitola
Santa Clara
San Leandro
Burlingame
Redwood City

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Helsinki to San Francisco

Discover the top 3 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$685Average$957FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$715Average$855FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$867Average$1,048FlexibilityNo cancel feeOn-time71%

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