Cheap flights from San Francisco International to Singapore

Compare San Francisco International to Singapore flight deals

Find the cheapest month or even day of the year to fly to Singapore

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Flight deals from San Francisco International to Singapore

Looking for a cheap last-minute deal or the best return flight from San Francisco International Airport to Singapore? If you want to travel next month, return fares start from $1,419. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from San Francisco International to Singapore

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Francisco International to Singapore flights are currently cheapest in September.

Direct flights from San Francisco International to Singapore

Alternative San Francisco International to Singapore routes

Looking for the cheapest, fastest or easiest route from San Francisco International to Singapore? You could fly into the following airports instead.

San Francisco to Singapore: Flight information

The things to know before you go.
Cheapest flight found$405
Cheapest month to flySeptember
Average flight time17 hrs, 7 mins
Most popular airlineUnited
Average flights per week66

Finding cheap flights from San Francisco International to Singapore: Frequently asked questions

There are 2 airports in Singapore: Seletar and Singapore Changi.
The best price we found for a return flight from San Francisco International to Singapore is $774. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
17 hours and 7 minutes is the average flight time from San Francisco International to Singapore.
United and Singapore Airlines fly direct from San Francisco International to Singapore.
As of May 2026, there are 33 flights per week flying from San Francisco International to Singapore.
The cheapest month to fly from San Francisco International to Singapore is usually September.
If you're flying from San Francisco International Airport, the cheapest airport near Singapore is Singapore Changi – which is 17.9 km away from the centre of Singapore. We've found flights into this airport from $774.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Francisco International Airport to Singapore on Thursday, 3 September 2026.
Yes – the average flight time is 17 hours and 7 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Singapore but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Singapore is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 28°C. May is typically the warmest month in Singapore, when it usually averages around 30°C. You can expect the least rain in February. The coldest month is December, with temperatures averaging 25°C. The rainiest month is December.
Currently, Singapore Airlines offers the cheapest flight tickets to Singapore.

Flying from San Francisco International Airport (SFO) to Singapore: what you need to know

  • Expect to be travelling for 15 hours 10 minutes. That's the average time for a direct flight from San Francisco International Airport to Singapore.

  • San Francisco International Airport is located in San Francisco. Following the UTC+8 timezone, Singapore is 16 hours ahead of San Francisco.

  • The busiest route is from San Francisco International Airport (SFO) to Singapore Changi Airport (SIN). You can select from 28 weekly services between these two airports. If you want to head off as soon as possible, the earliest flight from SFO to SIN is the 09:40 Singapore Airlines service. If you'd rather fly out later on, the last departure is at 23:40 with United Airlines.

  • For a relaxed start to your SFO to Singapore flight, leave enough time to navigate the airport and find your gate. Arriving two hours ahead of international departures and one hour before domestic flights is the general rule.

  • During popular months such as July, it's a good idea to get to the airport even earlier. Plan to arrive two hours before a domestic departure and four hours ahead for international flights when you fly during peak periods in general.

  • Start your trip at SFO and travel nonstop to Singapore Changi Airport (SIN). That's where you can expect to touch down when searching for San Francisco International Airport to Singapore tickets.

  • Check out the deals with Singapore Airlines. This carrier has direct flights from San Francisco International Airport to Singapore.

  • Consider adding a stopover to potentially unlock a cheaper plane ticket from SFO to Singapore. Just deselect 'Direct flights only' during your search. Take a break (and maybe save some cash) by stopping at one of these connection hubs:

    • Mumbai Chhatrapati Shivaji International Airport (BOM)

    • Manila Ninoy Aquino International Airport (MNL)

    • Bengaluru Kempegowda International Airport (BLR)

  • Travelling from central San Francisco to SFO takes around 35 minutes by public transport. If you ride-share, drive or grab a taxi, you'll cover the 18 kilometres in 25 minutes or so, depending on traffic.

  • Want a hassle-free start to your trip? Stay near SFO. Whether you're catching an early flight from San Francisco International Airport to Singapore or just don't want to be rushed, these hotels put convenience first:

  • 78% of flights that depart San Francisco International Airport arrive at their destination on schedule.

How to find the cheapest flights from San Francisco International Airport (SFO) to Singapore

  • The best price we've seen for a one-way San Francisco International Airport to Singapore flight is $405. The cheapest price for a return flight is $774. Remember fares can change due to availability at the time of booking.

  • Book 11 months before flying. Pricing trends show that this is the ideal window for finding cheap flights from SFO to Singapore.

  • Plan your trip for April. That's the best month for scoring an awesome deal on San Francisco International Airport to Singapore tickets. If you're flexible on when you fly, use the 'Whole month' tool to find the cheapest price across every month.

  • Stay on top of deals for cheap flights from SFO to Singapore by setting up a Price Alert. You'll receive an email or push notification on the app when a lower fare pops up.

  • Snag an affordable flight from San Francisco International Airport to Singapore with the help of our filters. Select your preferred times, airlines and number of stops, then sort the results by 'Cheapest' for the best deals.

Airports in Singapore

Singapore Changi Airport (SIN)

  • Singapore Changi Airport (SIN) is around 19 kilometres from central Singapore. If you're opting for a ride-share or a taxi, the drive takes about 25 minutes.

  • If you're taking public transport, expect a journey time of about 40 minutes.

  • Consider staying in a hotel near SIN if you have a late flight from San Francisco International Airport to Singapore. Select one of these accommodation options and avoid the hassle of a long transfer:

  • Reserving your ride from Singapore Changi Airport about two weeks ahead of your flight from SFO to Singapore can help you lock in the best possible rate.

Seletar Airport (XSP)

  • Seletar Airport (XSP) is about 14 kilometres from central Singapore. Explore your options for heading into town after your flight from San Francisco International Airport to Singapore has arrived.

  • You'll find some comfortable places to drop your things at near XSP. Kick back and get cosy after your SFO to Singapore flight at one of these perfectly located options:

Best time to go to Singapore

  • February is the most popular month for flights from San Francisco International Airport to Singapore. To avoid the crowds, head to Singapore in December.

  • The warmest month in Singapore is May, with temperatures ranging between 25ºC (77ºF) and 31ºC (88ºF). Lock in your San Francisco International Airport to Singapore plane ticket then if you enjoy this type of weather.

  • Search for cheap tickets from SFO to Singapore in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between 24ºC (75ºF) and 30ºC (86ºF) on average.

More about Singapore

  • When it comes to searching for somewhere to rest your head, you'll find the best stays in Singapore right here. Check out these options once you've booked your flight from San Francisco International Airport to Singapore:

  • Marina Bay Sands Hotel Infinity Pool and Marina Bay Sands are a couple of popular attractions to add to your Singapore travel itinerary. Keep the momentum going by heading to Gardens by the Bay.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.