HEL - SFO

$432 Find Cheap Flights from Helsinki to San Francisco - Compare and Save

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 9/15. 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

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Everything you should know

Cheapest round-trip
$770
Typical prices: $765-$1,024
Turkish Airlines
Thu 10/29Sat 11/7
HEL - SFO • 1 stop
Cheapest one-way
$432
Typical prices: $834-$1,903
Multiple Airlines
Tue 9/15
HEL - SFO • 3 stops
Top airlines
Cheapest • from $770 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Helsinki and San Francisco. You'll need at least 1 connection.
Insights
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Top layover airports
Cheapest • Avg $790 (round-trip)
Shortest trip • 13h 32m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 28% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
Good to know
+1
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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

Thu, Oct 29 - Sat, Nov 7
Turkish Airlines Logo
12:25 pm - 5:30 pm
HEL
-
SFO
38h 05m
1 stop
Turkish Airlines Logo
7:35 pm - 6:10 pm
SFO
-
HEL
36h 35m
1 stop
$770Turkish Airlines
Mon, Aug 31 - Mon, Sep 14
Scandinavian Airlines Logo
6:10 am - 2:40 pm
HEL
-
SFO
18h 30m
1 stop
Scandinavian Airlines Logo
4:45 pm - 3:20 pm
SFO
-
HEL
12h 35m
1 stop
$788Scandinavian Airlines
Thu, Oct 29 - Sat, Nov 7
Turkish Airlines Logo
12:25 pm - 5:30 pm
HEL
-
SFO
38h 05m
1 stop
Turkish Airlines Logo
7:35 pm - 6:10 pm
SFO
-
HEL
36h 35m
1 stop
$792Turkish Airlines
Mon, Aug 31 - Mon, Sep 14
Multiple Airlines Logo
1:55 pm - 11:58 pm
HEL
-
SFO
20h 03m
2 stops
Multiple Airlines Logo
3:05 pm - 4:40 pm
SFO
-
HEL
15h 35m
1 stop
$794Multiple Airlines
Mon, Aug 31 - Mon, Sep 14
Turkish Airlines Logo
8:20 am - 4:40 pm
HEL
-
SFO
18h 20m
1 stop
Turkish Airlines Logo
6:45 pm - 6:40 pm
SFO
-
HEL
37h 55m
1 stop
$796Turkish Airlines
Fri, Oct 30 - Sat, Nov 7
Turkish Airlines Logo
12:25 pm - 5:30 pm
HEL
-
SFO
38h 05m
1 stop
Turkish Airlines Logo
7:35 pm - 6:10 pm
SFO
-
HEL
36h 35m
1 stop
$798Turkish Airlines
Mon, Aug 31 - Mon, Sep 14
Turkish Airlines Logo
8:20 am - 4:40 pm
HEL
-
SFO
18h 20m
1 stop
Turkish Airlines Logo
6:45 pm - 6:40 pm
SFO
-
HEL
37h 55m
1 stop
$801Turkish Airlines
Sun, Oct 11 - Wed, Oct 21
Turkish Airlines Logo
12:05 pm - 10:50 am
HEL
-
SFO
32h 45m
1 stop
Turkish Airlines Logo
6:45 pm - 6:40 pm
SFO
-
HEL
37h 55m
1 stop
$804Turkish Airlines
Mon, Aug 31 - Mon, Sep 14
Turkish Airlines Logo
8:20 am - 4:40 pm
HEL
-
SFO
18h 20m
1 stop
Turkish Airlines Logo
6:45 pm - 6:40 pm
SFO
-
HEL
37h 55m
1 stop
$807Turkish Airlines
Mon, Aug 31 - Mon, Sep 14
Turkish Airlines Logo
8:20 am - 4:40 pm
HEL
-
SFO
18h 20m
1 stop
Turkish Airlines Logo
12:55 pm - 6:40 pm
SFO
-
HEL
19h 45m
1 stop
$818Turkish 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 October.

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 June, where the average cost of round-trip tickets is $1,133 and $1,090 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 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low season

January

Cheapest flight

$432
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 1% lower on average.
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 5 days, the lowest price for a flight from Helsinki to San Francisco was $432 for a one-way ticket and $770 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, and Star Alliance are the airline alliances operating flights between Helsinki and San Francisco, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Helsinki to San Francisco, Scandinavian Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from Helsinki to San Francisco are Scandinavian Airlines and Lufthansa. With an average price for the route of $829 and an overall rating of 7.4, Scandinavian Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $1,110 and an overall rating of 6.8.

  • 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 airlines 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.
7.4
Scandinavian AirlinesOverall score based on 1885 reviews
6.7Entertainment
8.0Crew
6.7Food
7.7Boarding
7.3Comfort
Airline reviews

Overall a great experience. I didn’t like that they didn’t assign seats until we arrived at airport. All the employees we interacted with at the airport and on the flight were kind and helpful.

8.0 ExcellentAnonymous, Jul 2026
CPH - SFO
Read more Scandinavian Airlines reviews

Overall a great experience. I didn’t like that they didn’t assign seats until we arrived at airport. All the employees we interacted with at the airport and on the flight were kind and helpful.

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.

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

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,

Scandinavian was perfect. Nice A350 with an on time departure and an an experienced crew. What a difference from TAP.

The staff were great, the food was good. I just hate being crammed in a tuna can for 10 hours cause I can’t afford a better seat.

Maybe more diverse entertainment. Although the inflight cameras were amazing 10/10

I upgraded to economy plus and it’s so worth the price. The crew is exceptional and the food is pretty decent. I would definitely fly with them again.

I paid for wifi and it worked about a total of 5 min. Feel ripped off

Generally good. Not their fault but the design of the Boeing 747 had seating supports directly in line with my legs. So my legs always had to straddle this support which caused body misallignment. Such poor design from Boeing. There was no USB port for me to charge my phone. The screen touch control was very poor.

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

Never happened. Flight was delayed. Had to be re rojyed

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

I was very happy with everything, thank you for the smooth flight ✈️

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

Entertainment system is old. Food can be tastier Need to provide toothbrush and toothpaste at least when asked.

This was the best carrier, comfort, service, good food, on time experience on a long haul flight. New, clean, quiet, smooth aircraft!!!

The plane was clean and the staff courteous and professional. The seat bottom was uncomfortable but only after many hours. It had a pressure point that left me a small bruise on my right leg (very surprising). The pasta was terrible (hard on the edges sticking out and soggy on the bottom edges) but I guess that's how it comes out in a microwave (?). The entertainment was glitching and shutting off every 20 minutes or so but, in the end, we made it home safely with very little turbulence and that's what really matters.

Would never fly lauffthabsa again. Seats were way too crowded together....very uncomfortable le

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

Information on your arrival and departure airports