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$450+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
HEL — SFO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Helsinki-Vantaa to San Francisco are usually found in February or October, 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 September 11, 2025.

Round-trip from

$753
(Scandinavian Airlines)

One-way from

$450
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$829
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 ($107 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 September 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 September 11, 2025.

This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/304:10 pmHEL - SFO
2 stops32h 25mScandinavian Airlines
Thu 11/134:40 pmSFO - HEL
2 stops31h 50mScandinavian Airlines
Deal found 9/9$753
This Travelis 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2512:35 pmHEL - SFO
1 stop33h 30mTurkish Airlines
Sat 11/17:50 pmSFO - HEL
1 stop37h 15mTurkish Airlines
Deal found 9/10$759
This Flightnetwork 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2511:15 amHEL - SFO
1 stop15h 15mScandinavian Airlines
Fri 11/74:40 pmSFO - HEL
2 stops15h 15mScandinavian Airlines
Deal found 9/11$766
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/12:25 pmHEL - SFO
2 stops32h 25mMultiple Airlines
Tue 10/141:45 pmSFO - HEL
2 stops18h 35mMultiple Airlines
Deal found 9/10$781
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2912:05 amHEL - SFO
2 stops21h 45mMultiple Airlines
Thu 11/133:40 pmSFO - HEL
2 stops21h 30mMultiple Airlines
Deal found 9/9$789
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:15 amHEL - SFO
1 stop18h 20mScandinavian Airlines
Tue 11/1812:30 pmSFO - HEL
2 stops21h 50mScandinavian Airlines
Deal found 9/9$792
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:55 amHEL - SFO
1 stop15h 45mLufthansa
Tue 11/181:30 pmSFO - HEL
1 stop19h 20mLufthansa
Deal found 9/10$804
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:55 amHEL - SFO
1 stop15h 45mUnited Airlines
Tue 11/181:30 pmSFO - HEL
1 stop19h 20mUnited Airlines
Deal found 9/9$807
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:55 pmHEL - SFO
1 stop16h 15mUnited Airlines
Thu 11/132:40 pmSFO - HEL
1 stop15h 50mUnited Airlines
Deal found 9/10$809

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 September 11, 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 10/30

4:10 pm-3:35 pm

2 stops32h 25m

San Francisco

Thu 11/13

4:40 pm-10:30 am

2 stops31h 50m

$753

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Fri 11/14

6:15 am-2:35 pm

1 stop18h 20m

San Francisco

Tue 11/18

12:30 pm-8:20 pm

2 stops21h 50m

$789

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Thu 10/30

5:30 am-7:25 pm

3 stops22h 55m

San Francisco

Thu 11/13

4:40 pm-7:45 pm

2 stops17h 05m

$803

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Fri 11/14

6:55 am-12:40 pm

1 stop15h 45m

San Francisco

Tue 11/18

1:30 pm-6:50 pm

1 stop19h 20m

$804

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Fri 11/14

6:55 am-12:40 pm

1 stop15h 45m

San Francisco

Tue 11/18

1:30 pm-6:50 pm

1 stop19h 20m

$807

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Thu 10/30

1:55 pm-9:10 pm

1 stop16h 15m

San Francisco

Thu 11/13

2:40 pm-4:30 pm

1 stop15h 50m

$809

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Wed 10/1

7:00 am-5:47 pm

2 stops20h 47m

San Francisco

Tue 10/14

3:05 pm-4:40 pm

1 stop15h 35m

$813

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Sat 10/25

6:05 am-2:30 pm

1 stop18h 25m

San Francisco

Fri 11/7

1:30 pm-6:50 pm

1 stop19h 20m

$817

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Mon 9/22

10:20 pm-2:35 pm

3 stops50h 15m

$450

HelsinkiSan Francisco

HEL - SFO

HELSFO

Helsinki-Vantaa

Tue 9/16

12:00 pm-2:35 pm

3 stops36h 35m

$522

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 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 August 29, 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 $357). 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 September 11, 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.

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 September 11, 2025.
Get a feel of what it's like to fly with Scandinavian Airlines, American Airlines, and Lufthansa 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.
Scandinavian Airlines
7.4
Good
1,484 reviews

Entertainment

6.7

Food

6.7

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Kent,Aug 2025

CPH - SEA

When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
Scandinavian Airlines
7.4
Good
1,484 reviews
Scandinavian Airlines
7.4
Good
1,484 reviews

Entertainment

6.7

Food

6.7

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Kent,Aug 2025

CPH - SEA

When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
American Airlines
7.2
Good
10,000 reviews
Scandinavian Airlines
7.4
Good
1,484 reviews

Entertainment

6.7

Food

6.7

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Kent,Aug 2025

CPH - SEA

When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu
Lufthansa
6.8
Okay
7,409 reviews
Scandinavian Airlines
7.4
Good
1,484 reviews

Entertainment

6.7

Food

6.7

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Kent,Aug 2025

CPH - SEA

When I got to Copenhagen, my two suitcases were missing from Monday 1030. I got them back Friday after five in the afternoon. My flight from Copenhagen to Seattle did not make the connection from Seattle to Honolulu

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.

  • How long is the flight from Helsinki to San Francisco?

    A quick flight from Helsinki to San Francisco can take about 32h 25m. Scandinavian Airlines provides one of the quickest options available for as low as $753. There are 5417 mi between Helsinki and San Francisco.

  • What are the cheapest airlines flying from Helsinki to San Francisco round-trip?

    According to our current data, Scandinavian Airlines ($685), Lufthansa ($686), and American Airlines ($867) offers the cheapest pricing from Helsinki to San Francisco. You may be able to fly from Helsinki to San Francisco for 20% less than the average price by searching for these airlines.

  • 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 $357). 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
Santa Cruz
Livermore
South San Francisco
Turlock
Antioch
Watsonville
Manteca
Santa Clara
Sunnyvale
Hollister
Vacaville
Foster City
Vallejo
Burlingame
Redwood City
Union City
San Leandro
San Mateo
Lathrop

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$685Average$957FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$686Average$945FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$867Average$1,048FlexibilityNo cancel feeOn-time71%

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