HEL - SFO

$578 Find Cheap Flights from Helsinki to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helsinki to San Francisco departing on 7/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helsinki to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helsinki to San Francisco, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$658
Typical prices: $692-$874
Multiple Airlines
Sun 2/8Sun 2/22
HEL - SFO • 2 stops
Cheapest one-way
$578
Typical prices: $855-$1,166
Multiple Airlines
Sun 7/12
HEL - SFO • 3 stops
Top airlines
Scandinavian Airlines
Cheapest • from $715 (round-trip)
Scandinavian Airlines
Best reviews • 7.3 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 12% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Helsinki to San Francisco (HEL-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Helsinki to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Helsinki to San Francisco

Sun, Feb 8 - Sun, Feb 22
Multiple Airlines Logo
9:05 pm - 2:35 pm
HEL
-
SFO
27h 30m
2 stops
Multiple Airlines Logo
4:40 pm - 11:15 pm
SFO
-
HEL
20h 35m
2 stops
$658Multiple Airlines
Mon, Mar 30 - Mon, Apr 6
Multiple Airlines Logo
5:05 pm - 5:55 pm
HEL
-
SFO
34h 50m
1 stop
Multiple Airlines Logo
9:00 pm - 2:00 pm
SFO
-
HEL
31h 00m
2 stops
$701Multiple Airlines
Sun, Mar 29 - Mon, Apr 6
Multiple Airlines Logo
7:00 am - 5:55 pm
HEL
-
SFO
20h 55m
1 stop
Multiple Airlines Logo
9:00 pm - 2:00 pm
SFO
-
HEL
31h 00m
2 stops
$705Multiple Airlines
Sun, Mar 8 - Mon, Mar 23
Scandinavian Airlines Logo
4:05 pm - 3:35 pm
HEL
-
SFO
32h 30m
1 stop
Scandinavian Airlines Logo
5:40 pm - 3:25 pm
SFO
-
HEL
12h 45m
1 stop
$714Scandinavian Airlines
Sat, Mar 7 - Mon, Mar 23
Scandinavian Airlines Logo
9:00 pm - 2:35 pm
HEL
-
SFO
27h 35m
1 stop
Scandinavian Airlines Logo
5:40 pm - 3:25 pm
SFO
-
HEL
12h 45m
1 stop
$715Scandinavian Airlines
Sun, Mar 8 - Mon, Mar 23
Turkish Airlines Logo
12:30 pm - 5:45 pm
HEL
-
SFO
38h 15m
1 stop
Turkish Airlines Logo
7:50 pm - 11:35 am
SFO
-
HEL
30h 45m
1 stop
$720Turkish Airlines
Sun, Feb 8 - Sun, Feb 22
Scandinavian Airlines Logo
6:15 am - 2:35 pm
HEL
-
SFO
18h 20m
1 stop
Scandinavian Airlines Logo
4:40 pm - 3:25 pm
SFO
-
HEL
12h 45m
1 stop
$723Scandinavian Airlines
Sun, Mar 8 - Mon, Mar 23
Multiple Airlines Logo
9:05 pm - 4:00 pm
HEL
-
SFO
27h 55m
2 stops
Multiple Airlines Logo
6:20 pm - 11:05 pm
SFO
-
HEL
19h 45m
1 stop
$744Multiple Airlines
Tue, Feb 10 - Mon, Feb 16
Multiple Airlines Logo
8:30 pm - 8:10 pm
HEL
-
SFO
33h 40m
1 stop
Multiple Airlines Logo
7:25 pm - 10:25 am
SFO
-
HEL
29h 00m
2 stops
$749Multiple Airlines
Sat, Mar 7 - Mon, Mar 23
Scandinavian Airlines Logo
6:15 am - 2:35 pm
HEL
-
SFO
18h 20m
1 stop
Scandinavian Airlines Logo
5:40 pm - 8:20 pm
SFO
-
HEL
17h 40m
1 stop
$756Scandinavian Airlines
Booking Insights

KAYAK's insights & trends for Helsinki to San Francisco flights

Get data-powered insights and trends into flights from Helsinki to San Francisco to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Helsinki to San Francisco?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Helsinki to San Francisco departing in February.

What is the cheapest month to fly from Helsinki to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Helsinki to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Helsinki to San Francisco is February, where tickets cost $762 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $1,046 and $949 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Helsinki to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Helsinki to San Francisco, you should book around 5 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$578
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Helsinki to San Francisco

When to book flights from Helsinki to San Francisco

Are your dates flexible? Find out the best times to travel from Helsinki to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Helsinki to San Francisco

  • What is the cheapest flight from Helsinki to San Francisco?

    In the last 3 days, the lowest price for a flight from Helsinki to San Francisco was $578 for a one-way ticket and $658 for a round-trip.

  • Do I need a passport to fly between Helsinki and San Francisco?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Helsinki and on arrival in San Francisco.

  • Which airports will I be using when flying from Helsinki to San Francisco?

    On your way to San Francisco, you’ll fly out from Helsinki-Vantaa. You’ll be landing at San Francisco.

  • Which aircraft models fly most regularly from Helsinki to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Helsinki to San Francisco?

    SkyTeam is the only airline alliance operating flights between Helsinki and San Francisco.

  • How does KAYAK find such low prices on flights from Helsinki to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Helsinki to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Helsinki to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Helsinki is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Helsinki to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Helsinki with another airline. Booking your flights between Helsinki and SFO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Helsinki to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Helsinki up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Helsinki to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Helsinki to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Helsinki to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
Scandinavian AirlinesOverall score based on 1654 reviews
7.6Boarding
7.2Comfort
6.6Entertainment
8.0Crew
6.6Food
Airline reviews

Our trip plan from Kayak stated we were flying SAS. That was not true. The first leg was a Delta flight. We wasted 25 minutes before finding out to check in with the correct airline. Then our SAS flight for the second leg arrived 25 minutes late, and our third leg flight with SAS closed the gate knowing the flight delay was SAS’s fault, and that this flight would only be backed up 5 minutes. The final kicker was that between Delta and SAS, they lost all our checked luggage.

6.0 GoodAnonymous, Jan 2026
MSP - BOS
Read more Scandinavian Airlines reviews

Our trip plan from Kayak stated we were flying SAS. That was not true. The first leg was a Delta flight. We wasted 25 minutes before finding out to check in with the correct airline. Then our SAS flight for the second leg arrived 25 minutes late, and our third leg flight with SAS closed the gate knowing the flight delay was SAS’s fault, and that this flight would only be backed up 5 minutes. The final kicker was that between Delta and SAS, they lost all our checked luggage.

Since our earlier flight was delayed, we missed this flight and were rerouted on Lufthansa 2 days later.

Scandinavian Airlines is terrible. Flight was late. Lost luggage. Rude flight attendants. Terrible experience.

The flight was very cold, and the seats were rather uncomfortable. The food has been better on our other SAS experiences. Most significantly, the luggage with most of my wife's personal items and clothes didn't make the flight. Hoping for a quick resolution, but no real opportunity to speak with a Human has us concerned.

Ancient aircraft (busted armrests, poor cabin temperature with no option for passenger control). Garbage everywhere. Risible checking of safely conditions on landing. Also, late.

Feels like economy sits are getting smaller especially while eating food

I was surprised how good an American airline can be - I was really impressed.

Cut out the nickel and dime pricing for "seat selection" and baggage, To do this on an international flight is just mind boggling. Seriously, why treat customers this way??? Nobody wants these hidden extra fees and everybody hates them. Also plane was too warm and no air vent, and water dripped from the ceiling at one point,

It was so hot on the plane. No air jets above the seats

I paid for my seat 💺 assignments for all for legs of my trip, SFO thru Copenhagen to Prague and back the same way. It cost 💲216.00 USD for all four seats. Despite this, on my return 2 flights, my prepaid seats were given away. When I spoke with the information services professional, she said she could not help me, nor provide an alternative seat equivalent or better than what I had. When I spoke with another representative, she was very rude, disrespectful, and did not help.

Everything you need to know for your flight from Helsinki to San Francisco

Information on your arrival and departure airports