Cheap Flights Helsinki to San Francisco from £703

Flight FAQs

• Which airlines offer the cheapest flights from Helsinki to San Francisco?

  Based on Trip.com data, Air France offers Cheapest nonstop one-way flights from £703 (for example, HEL–SFO on Mon, Oct 26). For a Cheapest nonstop return flight, Scandinavian Airlines offers fares from £572, departing on Tue, Oct 6 and returning on Tue, Oct 13.

• Which airlines offer flights from Helsinki to San Francisco?

  At the moment, several airlines serve connecting flights from Helsinki to San Francisco, including: KLM Royal Dutch Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

• When is the best time to book flights from Helsinki to San Francisco?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Helsinki to San Francisco is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from Helsinki to San Francisco?

  Here are some tips for finding the best flight deals from Helsinki to San Francisco on Trip.com:
  · Be flexible with your travel dates. The cheapest flight is currently on Mon, Oct 26, with one-way fares from just £703.
  · Compare airlines. Air France currently offers the lowest fares on this route.
  · Set up a price alert to track fare changes without searching every day.
  · Check Trip.com regularly for flight deals and available promo codes.
  · Avoid peak season or book early. July is generally the busiest month for travel to San Francisco.
  · Get exclusive promo codes on the Trip.com app.

• When is the best time to book a flight from Helsinki to San Francisco to get the best price?

  The cheapest month to book a flight from Helsinki to San Francisco is usually September, when demand is lower.

• Which upcoming date is the cheapest for flights from Helsinki to San Francisco?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Helsinki to San Francisco on September 14, 2026 with Turkish Airlines, with prices starting at £633.

• Which airports should you choose for flights from Helsinki to San Francisco?

  Flights to San Francisco can arrive at: San Francisco International Airport (SFO). The most common route connects Helsinki Airport and San Francisco International Airport (HEL–SFO).

• What is the time difference between Helsinki and San Francisco?

  The time difference between San Francisco and Helsinki is 10h.

• How can I change or cancel my flight ticket from Helsinki to San Francisco?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average price of a one-way flight from Helsinki to San Francisco?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Helsinki to San Francisco is £1,254. Fares vary by travel date, airline and availability.

• How do I book flights from Helsinki to San Francisco on Trip.com?

  Enter Helsinki and San Francisco, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveller details and complete payment to receive your confirmation.