HEL - SFO

$472 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 12/13. 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
$728
Typical prices: $712-$875
Scandinavian Airlines
Sun 3/15Sat 3/21
HEL - SFO • 2 stops
Cheapest one-way
$472
Typical prices: $759-$1,227
Multiple Airlines
Sat 12/13
HEL - SFO • 2 stops
Top airlines
Scandinavian Airlines
Cheapest • from $728 (round-trip)
Scandinavian Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
6 weeks
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 20% 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
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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, Mar 15 - Sat, Mar 21
Scandinavian Airlines Logo
7:00 am - 3:35 pmHEL-SFO
17h 35m2 stops
Scandinavian Airlines Logo
5:40 pm - 10:15 amSFO-HEL
31h 35m2 stops
$728Scandinavian Airlines
Find Deal
Thu, Nov 13 - Thu, Nov 27
Scandinavian Airlines Logo
7:00 am - 2:35 pmHEL-SFO
17h 35m2 stops
Scandinavian Airlines Logo
4:40 pm - 10:30 amSFO-HEL
31h 50m2 stops
$730Scandinavian Airlines
Find Deal
Mon, Nov 17 - Mon, Dec 1
Lufthansa Logo
6:55 am - 12:40 pmHEL-SFO
15h 45m1 stop
Lufthansa Logo
1:30 pm - 6:50 pmSFO-HEL
19h 20m1 stop
$763Lufthansa
Find Deal
Thu, Nov 13 - Thu, Nov 27
Delta Logo
7:00 am - 11:50 amHEL-SFO
14h 50m1 stop
Delta Logo
7:05 am - 4:25 pmSFO-HEL
23h 20m2 stops
$788Delta
Find Deal
Tue, Nov 18 - Tue, Nov 25
Delta Logo
7:00 am - 11:50 amHEL-SFO
14h 50m1 stop
Delta Logo
6:00 am - 4:25 pmSFO-HEL
24h 25m2 stops
$791Delta
Find Deal
Thu, Nov 13 - Thu, Nov 27
Air France Logo
7:00 am - 11:50 amHEL-SFO
14h 50m1 stop
Air France Logo
1:55 pm - 5:25 pmSFO-HEL
17h 30m1 stop
$792Air France
Find Deal
Sat, Dec 6 - Sat, Dec 13
Multiple Airlines Logo
2:40 pm - 2:35 pmHEL-SFO
33h 55m2 stops
Multiple Airlines Logo
4:40 pm - 8:00 amSFO-HEL
29h 20m3 stops
$809Multiple Airlines
Find Deal
Sun, Dec 7 - Sun, Dec 14
Lufthansa Logo
6:55 am - 3:55 pmHEL-SFO
19h 00m1 stop
Lufthansa Logo
9:40 pm - 12:00 pmSFO-HEL
28h 20m1 stop
$832Lufthansa
Find Deal
Mon, Dec 1 - Mon, Dec 8
Air France Logo
2:05 pm - 11:50 amHEL-SFO
31h 45m1 stop
Air France Logo
3:40 pm - 10:35 pmSFO-HEL
20h 55m1 stop
$850Air France
Find Deal
Thu, Nov 13 - Thu, Nov 27
Multiple Airlines Logo
5:30 am - 2:35 pmHEL-SFO
19h 05m3 stops
Multiple Airlines Logo
4:40 pm - 12:30 amSFO-HEL
21h 50m3 stops
$870Multiple Airlines
Find Deal
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 March.

What’s the cheapest day of the week to fly from Helsinki to San Francisco?

The average price of all round-trip flights from Helsinki to San Francisco clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to San Francisco on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Helsinki to San Francisco. For your return ticket, we recommend flying on a Sunday and avoiding Saturdays for the best deals.

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 6 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$472
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly with an average 7% 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 $472 for a one-way ticket and $728 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?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Helsinki and San Francisco, with oneworld being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Helsinki to San Francisco are Scandinavian Airlines and American Airlines. With an average price for the route of $957 and an overall rating of 7.4, Scandinavian Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,123 and an overall rating of 7.2.

  • 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 3 airlines serving 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 1537 reviews
6.6Entertainment
7.6Boarding
7.3Comfort
6.6Food
8.0Crew
Airline reviews

The flight was cancelled without explanation, and the replacement flight was late

2.0 MediocreDariusz, Oct 2025POZ - CPH
Read more Scandinavian Airlines reviews

The flight was cancelled without explanation, and the replacement flight was late

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.

Really like this airline. Best food for airlines and comfortable seats and attentive staff. Delay was due to air traffic.

I paid extra for our seats on the way coming back from Stockholm to New York the seats were changed and it was totally waved. This happened to three more passengers.

Will not recommend SAS for business travel. Food was so-so. Service was very good. First leg was very good. Second leg from Copenhagen to Barcelona was terrible. We paid a LOT for business class and to have seats worse than most coach seats with no entertainment and no charging available for 1/3rd of the whole trip was not acceptable. Very disappointing. I thought they were coming back in the U.S. with style, NOT YET.

Online check in of SAS is very poor. Even the kiosks at London had system problems. Either it would print boarding tickets or luggage tags. Many other customers had problems . SAS staff was good and helped.

No choice of food. Needed to pay more even for a can of coke!!!

great crew, professional, funny, and great service. good condition plane too! great experience

When my flight was changed from delays they were quick to rebook me.

The seats have no legroom. I was bruised on my knees for having them pressed up against the seat in front of me. Then I got food poisoning from the special meal I ordered. Pretty horrible all around.

The business class seats are dated and uncomfortable. The space is bare minimum and there is absolutely no privacy. For $4K, this is not what I expect.

The flight crew was rude. We were in first class and no one even offered water until an hour after we were in the air. Horrible experience

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Did not get the seat I selected and paid for.

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

Delayed flight that lead to a missed connection and a 5-hour trip became a 12-hour flight 🙄

There is no room, no gluten free options, or any free internet/entertainment. You have to bring your own tablet or smartphone because there are no screens.

American Airlines is a mediocre airlines: they do not maintain the highest standard of cleanliness in the cabins, and the food is not well thought out. Service is not at top of mind compared to other international airlines such as Singapore Airlines, JAL or others.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Give yourself over 2+ hours layover because if flight is slighlty delayed and you miss your connection, Lufthansa will do nothing for you

We would have missed our connection from Munich to Boston but we had a van outside the plan that wisked us to our terminal. Much appreciated and we didn’t even realize that Lufthansa had done this until the announcement on disembarkation. Well organized airline! Will definitely fly Lufthansa again!!!

Everything went well. I will fly with Lufthansa again. And use Kayak whenever I book flights

Bought a seat in a flight that got changed out so ended up paying for a seat I would have had if I hadn't paid.

Food was poor quality and the screens for entertainment didn’t work properly

Food was much better than my outbound flight. On-time. Good service. I had a problem with my entertainment screen, but the attendant fixed it promptly.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

United lost my travel information and canceled my original flight. I had a seat assignment but was refused the booking. I had to prove that I went to Germany on United Very concerned about security that no one recorded my passport from Cleveland to NY and NY to Frankfurt I arrived at home at 12:30am on Saturday instead of 8pm I expect a full refund from United Please provide information to assure compensation

I paid for extra legroom which made the long flight very comfortable. Food was very tasty, they fed us 2 meals plus a cookie snack and extra liquids. Checked luggage is expensive.

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

Information on your arrival and departure airports

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