HEL - SFO

$601 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 1/29. 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

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
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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 30 - Thu, Nov 6
Scandinavian Airlines Logo
4:10 pm - 3:35 pmHEL-SFO
32h 25m2 stops
Scandinavian Airlines Logo
4:40 pm - 3:25 pmSFO-HEL
12h 45m1 stop
$714Scandinavian Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
Scandinavian Airlines Logo
4:10 pm - 3:35 pmHEL-SFO
32h 25m2 stops
Scandinavian Airlines Logo
4:40 pm - 1:35 amSFO-HEL
22h 55m1 stop
$717Scandinavian Airlines
Find Deal
Sat, Nov 8 - Mon, Nov 24
Scandinavian Airlines Logo
6:30 pm - 2:35 pmHEL-SFO
30h 05m2 stops
Scandinavian Airlines Logo
4:40 pm - 11:45 pmSFO-HEL
21h 05m2 stops
$718Scandinavian Airlines
Find Deal
Mon, Oct 27 - Tue, Nov 11
Turkish Airlines Logo
12:30 pm - 5:45 pmHEL-SFO
38h 15m1 stop
Turkish Airlines Logo
6:50 pm - 11:35 amSFO-HEL
30h 45m1 stop
$754Turkish Airlines
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Mon, Oct 20 - Mon, Oct 27
Multiple Airlines Logo
6:50 pm - 2:35 pmHEL-SFO
53h 45m2 stops
Multiple Airlines Logo
4:55 pm - 10:45 amSFO-HEL
32h 50m1 stop
$755Multiple Airlines
Find Deal
Sat, Nov 8 - Mon, Nov 24
Turkish Airlines Logo
12:30 pm - 4:45 pmHEL-SFO
38h 15m1 stop
Turkish Airlines Logo
6:50 pm - 6:05 pmSFO-HEL
37h 15m1 stop
$762Turkish Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
Multiple Airlines Logo
5:30 am - 3:35 pmHEL-SFO
19h 05m3 stops
Multiple Airlines Logo
4:40 pm - 11:15 pmSFO-HEL
20h 35m2 stops
$782Multiple Airlines
Find Deal
Mon, Oct 20 - Mon, Oct 27
Lufthansa Logo
5:50 pm - 12:40 pmHEL-SFO
28h 50m1 stop
Lufthansa Logo
3:40 pm - 1:20 amSFO-HEL
24h 40m1 stop
$803Lufthansa
Find Deal
Fri, Nov 14 - Tue, Nov 18
Lufthansa Logo
6:55 am - 12:40 pmHEL-SFO
15h 45m1 stop
Lufthansa Logo
1:30 pm - 6:50 pmSFO-HEL
19h 20m1 stop
$807Lufthansa
Find Deal
Sat, Nov 8 - Mon, Nov 24
American Airlines Logo
12:30 pm - 11:25 pmHEL-SFO
20h 55m1 stop
American Airlines Logo
8:00 am - 10:45 amSFO-HEL
16h 45m1 stop
$838American Airlines
Find Deal

Everything you should know

Top airlines
Scandinavian Airlines
Cheapest • from $714 (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 15% 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
Cheapest round-trip
$714
Overall average: $791
Scandinavian Airlines
Thu 10/30Thu 11/6
HEL - SFO • 2 stops
Cheapest one-way
$601
Typical prices: $879-2565
WestJet
Thu 1/29
HEL - SFO • 2 stops
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We hope you love your trip to San Francisco!
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.

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 $761 (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 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$601
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 9% 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 $601 for a one-way ticket and $714 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, SkyTeam, and Star Alliance are the airline alliances operating flights between Helsinki and San Francisco, with Star Alliance 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 $1,048 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 1486 reviews
7.6Boarding
7.3Comfort
8.0Crew
6.6Entertainment
6.7Food
Airline reviews

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.

4.0 OkayAnonymous, Aug 2025ARN - EWR
Read more Scandinavian Airlines reviews

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.

Airline left me stranded in the U.S. gave me an unrequested refund of 40% of booking and canceled my trip back! When I asked why, the said “we don’t have to tell you why”. “But you can rebook”. Never again! Paid 2x and rebooked on Austrian. What a joke!

I liked the free wifi in business class and the food and beverages.

OK experience except for the fact that I had to pay $100 for one checked in bag in Amsterdam, while it was supposed to be free like it was on the flight from LAX to AMS. I want SAS to reimburse me for this!

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

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

I flew Business Class. Rory, one of the Cabin stewards, was attentive, explained the menu, provided appropriate drinks. was

We left 1.5 hours late therefore missing my connection. The airline didn’t give vouchers.

Food could have something without dairy, I couldn't eat anything. Tv for both seats was malfunctioning. They have one bottle of ginger ale for entire plane.... and I paid extra for these seats...very disappointed

The flight and crew were good. The customer experience on the ground could have been better. We had to reschedule our flight because of a delay on the previous flight. The attendants working the desk in Washington DC were not helpful. They told us to scan a QR code and that would get us rebooked. Why couldn't two people standing at their computers do this? We had to chat with someone to get everything figured out. It was extremely confusing.

We took two long flights with Lufthansa, both were delayed making us miss our connecting flights. Lufthansa took care of the first one. The second was a switch to United and figuring out how to rebook was not a pleasant experience.

It was chaotic. It was overbooked so we didn't have seats until the end but they turned out to be good seats. The gate was at the end of the airport. We had to get busses to the tarmac and board. It just seemed chaotic. Flight was OK. Food was not so good. Lufthansa used to be such a great airline and now as it's with everything else: If you have money you get comforts but if you don't then you end up below deck with the rest of the cattle.

Welp - they boarded us appropriately...then had us sit on the plane for over two hours before cancelling the flight...which meant another night in Munich. I probably had it a little better than most as over 500 people had to be accommodated/re-booked etc. The next day I boarded the same flight (for which I had now been ticketed 3 straight days) and - with "only" an hour delay, managed to finally get home over 2 days later than scheduled. I haven't flown Lufthansa to Europe in years...and I won't be looking to do so again in the future. To be clear, though, the people I interacted with - flight crew, Service Center, check-in were all professional and courteous - management is clearly to blame for their lack of communication and unpreparedness for when things go wrong.

It was a short flight, everything was good with it.

Flight was delayed over one hour and I had to pay to select my seat, even though my booking supposedly had free selection (I paid extra for this at time of booking)

Both flights were delayed over 1 hour. And I had to pay for seats, even though my reservation supposedly included free seat selection.

The male attendant has zero personality. It seemed like he was over worked or hated his job, not once did he smile or made any contact with the people on the plane. Strictly business and call it a day!

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

Information on your arrival and departure airports

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