$378+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from San Francisco to Helsinki with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 June 12, 2025.
Round-trip from | $928 (Justfly.com) |
|---|---|
One-way from | $378 (Kiwi.com) |
Popular in | June |
Cheapest in | November |
Average price | $1,179 |
Find flight deals from San Francisco to Helsinki
Cheapest flights from San Francisco to HelsinkiExplore 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 June 12, 2025.
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 June 12, 2025.
This Justfly.com deal was found by Cheapflights users on 6/12. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Gurufare deal was found by Cheapflights users on 6/11. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/12. 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.
This Lufthansa deal was found by Cheapflights users on 6/10. 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.
This Brussels Airlines deal was found by Cheapflights users on 6/10. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 6/12. 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.
This oojo deal was found by Cheapflights users on 6/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air France deal was found by Cheapflights users on 6/12. 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.
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 June 12, 2025.
Use the filters below to find and compare flights from San Francisco to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoHelsinki
SFO - HEL
SFOHEL
San Francisco
Fri 7/18
12:40 pm-6:40 pm
1 stop20h 00m
Helsinki-Vantaa
Sat 7/26
12:35 pm-10:35 am
1 stop32h 00m
San FranciscoHelsinki
SFO - HEL
SFOHEL
San Francisco
Fri 8/22
11:40 am-6:55 pm
2 stops21h 15m
Helsinki-Vantaa
Wed 8/27
6:10 am-7:57 pm
2 stops23h 47m
San FranciscoHelsinki
SFO - HEL
SFOHEL
San Francisco
Fri 11/21
5:30 pm-9:10 pm
1 stop17h 40m
Helsinki-Vantaa
Sun 11/30
5:50 pm-3:00 pm
2 stops31h 10m
San FranciscoHelsinki
SFO - HEL
SFOHEL
San Francisco
Fri 8/22
7:40 pm-8:15 pm
1 stop14h 35m
Helsinki-Vantaa
Mon 8/25
7:10 am-4:30 pm
2 stops19h 20m
San FranciscoHelsinki
SFO - HEL
SFOHEL
San Francisco
Sun 7/27
9:03 pm-12:50 pm
2 stops29h 47m
Helsinki-Vantaa
Sun 8/3
6:10 am-7:22 am
2 stops35h 12m
San FranciscoHelsinki
SFO - HEL
SFOHEL
San Francisco
Wed 8/6
4:20 pm-12:40 pm
2 stops34h 20m
Helsinki-Vantaa
Mon 8/11
8:25 pm-1:50 pm
1 stop27h 25m
San FranciscoHelsinki
SFO - HEL
SFOHEL
San Francisco
Sun 7/27
9:05 pm-11:50 pm
1 stop16h 45m
Helsinki-Vantaa
Thu 8/7
6:00 am-12:57 am
2 stops28h 57m
San FranciscoHelsinki
SFO - HEL
SFOHEL
San Francisco
Wed 7/16
6:00 am-2:00 pm
2 stops22h 00m
Helsinki-Vantaa
Tue 7/22
3:00 pm-3:48 pm
2 stops34h 48m
San FranciscoHelsinki
SFO - HEL
SFOHEL
San Francisco
Tue 7/15
2:40 pm-4:50 pm
1 stop16h 10m
Helsinki-Vantaa
Tue 7/22
6:10 am-12:40 pm
1 stop16h 30m
San FranciscoHelsinki
SFO - HEL
SFOHEL
San Francisco
Mon 6/30
8:25 pm-4:40 pm
1 stop34h 15m
Helsinki-Vantaa
Thu 7/10
6:40 am-11:11 pm
2 stops26h 31m
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.
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 June 9, 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 $1,081). 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 June 12, 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 June 12, 2025.
See what other customers who have flown with Delta, KLM 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.
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Overall
Entertainment
Comfort
Food
Boarding
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
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.
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Alternative routes for San Francisco to Helsinki
See prices for flight routes from nearby airports that may be better suited for you.
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 June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$447 | Average$803 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$526 | Average$787 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$551 | Average$1,003 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$554 | Average$872 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$567 | Average$1,032 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$582 | Average$1,012 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$582 | Average$994 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$588 | Average$935 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$597 | Average$684 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$615 | Average$819 | FlexibilityNo cancel fee | On-timeN/A |