Cheap flight from San Francisco to Singapore from $336

Frequently Asked Questions

• Which airlines offer direct flights from San Francisco to Singapore?

  At the moment, you can catch a nonstop flight from San Francisco to Singapore with the following airlines, including: Singapore Airlines United Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from San Francisco (SFO) to Singapore (SIN) and what is the distance?

  It takes around 16 hours 54 minutes to fly from San Francisco (SFO) to Singapore (SIN).

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

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Francisco to Singapore 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 many flights are there per week from San Francisco to Singapore?

  Based on Trip.com data in the past 4 weeks, there is 24 flight per week flying from San Francisco to Singapore. You can check the weekly schedule for popular airlines on this route below: Singapore Airlines: S/M/T/W/T/F/S -- SQ033 (21:03) Singapore Airlines: S/M/T/W/T/F/S -- SQ031 (11:05) United Airlines: S/M/T/W/T/F/S -- UA029 (11:09)

• When are flight tickets from San Francisco (SFO) to Singapore (SIN) the cheapest?

  The cheapest months to fly from San Francisco to Singapore is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from San Francisco to Singapore on?

  After crunching the numbers on our November flight calendar, it's currently cheapest to fly from San Francisco to Singapore on November 17, 2025 with Philippine Airlines, with prices starting at $291.

• Which airports can I fly to for Singapore from San Francisco?

  You can land at any one of the following hubs in Singapore, with San Francisco International Airport to Singapore Changi Airport (SFO-SIN) is by far the most common option on this route: Singapore Changi Airport (SIN) Seletar Airport (XSP).

• Is there any time difference between San Francisco and Singapore?

  The time difference between Singapore and San Francisco is 16h.

• How do I change or cancel my ticket from San Francisco to Singapore?

  Tickets can only be changed or canceled 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.