$389 Cheap Flights from San Francisco (SFO) to Singapore (SIN)

View $389 flight on Mon, Aug 18, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Singapore Changi Airport (SIN)

Find available prices by choosing your travel dates.

Cheap Flights from San Francisco to Singapore (SFO-SIN)

Prices were available within the past 7 days and start at $389 for one-way flights and $735 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Eastern Airlines
Mon, May 5 - Wed, May 21
SFO
San Francisco
SIN
Singapore
$735 Roundtrip, found 6 hours ago
$735
Roundtrip
found 6 hours ago
Select China Eastern Airlines flight, departing Mon, May 5 from San Francisco to Singapore, returning Wed, May 21, priced at $735 found 6 hours ago
Philippine Airlines
Tue, Sep 2 - Sun, Sep 14
SFO
San Francisco
SIN
Singapore
$750 Roundtrip, just found
$750
Roundtrip
just found
Select Philippine Airlines flight, departing Tue, Sep 2 from San Francisco to Singapore, returning Sun, Sep 14, priced at $750 just found
United
Mon, Aug 11 - Mon, Oct 20
SFO
San Francisco
SIN
Singapore
$754 Roundtrip, found 1 hour ago
$754
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Aug 11 from San Francisco to Singapore, returning Mon, Oct 20, priced at $754 found 1 hour ago
Air Canada
Tue, Oct 7 - Tue, Oct 14
SFO
San Francisco
SIN
Singapore
$755 Roundtrip, just found
$755
Roundtrip
just found
Select Air Canada flight, departing Tue, Oct 7 from San Francisco to Singapore, returning Tue, Oct 14, priced at $755 just found
Cathay Pacific
Mon, Aug 18 - Mon, Aug 25
SFO
San Francisco
SIN
Singapore
$771 Roundtrip, just found
$771
Roundtrip
just found
Select Cathay Pacific flight, departing Mon, Aug 18 from San Francisco to Singapore, returning Mon, Aug 25, priced at $771 just found
Asiana Airlines
Tue, Sep 2 - Sun, Sep 14
SFO
San Francisco
SIN
Singapore
$783 Roundtrip, just found
$783
Roundtrip
just found
Select Asiana Airlines flight, departing Tue, Sep 2 from San Francisco to Singapore, returning Sun, Sep 14, priced at $783 just found
Vietnam Airlines
Wed, Nov 12 - Thu, Nov 27
SFO
San Francisco
SIN
Singapore
$790 Roundtrip, just found
$790
Roundtrip
just found
Select Vietnam Airlines flight, departing Wed, Nov 12 from San Francisco to Singapore, returning Thu, Nov 27, priced at $790 just found
Korean Air
Mon, Dec 1 - Tue, Dec 16
SFO
San Francisco
SIN
Singapore
$792 Roundtrip, just found
$792
Roundtrip
just found
Select Korean Air flight, departing Mon, Dec 1 from San Francisco to Singapore, returning Tue, Dec 16, priced at $792 just found
Delta
Wed, Nov 26 - Thu, Dec 11
SFO
San Francisco
SIN
Singapore
$803 Roundtrip, just found
$803
Roundtrip
just found
Select Delta flight, departing Wed, Nov 26 from San Francisco to Singapore, returning Thu, Dec 11, priced at $803 just found
All Nippon Airways
Mon, Aug 4 - Tue, Oct 14
SFO
San Francisco
SIN
Singapore
$807 Roundtrip, found 8 hours ago
$807
Roundtrip
found 8 hours ago
Select All Nippon Airways flight, departing Mon, Aug 4 from San Francisco to Singapore, returning Tue, Oct 14, priced at $807 found 8 hours ago
Flights from San Francisco (SFO) to Singapore (SIN)
Origin airport
San Francisco Intl.
Destination airport
Changi
Airlines serving
Air Canada, Air India, All Nippon Airways, Asiana Airlines, British Airways, Cathay Pacific, China Airlines, China Southern Airlines, EVA Airways, Emirates, Japan Airlines, Korean Air, Lufthansa, Malaysia Airlines, Philippine Airlines, Qatar Airways, STARLUX Airlines, Singapore Airlines, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$734
Distance
8438 mi

San Francisco to Singapore Flights

The cheapest times to fly from San Francisco to Singapore

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Singapore are during the month of May. You can find some of the cheapest flights from San Francisco to Singapore with Expedia's search tool and vast selection of airlines.

The best time to book a flight from San Francisco to Singapore

Sunday is one of the best days to book for cheap flights from San Francisco to Singapore: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from San Francisco to Singapore

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Singapore in 2025. You can also book with separate airlines for your outbound and return journeys, from $389 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Singapore flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Singapore airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Changi Airport (SIN) cost?
Discover the latest flight deals from SFO to SIN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SFO to SIN?
The cheapest flights from SFO to SIN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from San Francisco Intl. Airport (SFO) to Changi Airport (SIN)?
You can travel nonstop from San Francisco Intl. Airport (SFO) to Changi Airport (SIN) on a United Airlines flight.
What is the cheapest airline that flies from SFO to SIN?
With prices starting from $411 for a one-way flight from SFO to SIN, United is currently the cheapest carrier operating this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SFO on April 30 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from San Francisco Intl. Airport (SFO) to Changi Airport (SIN)?
Daily, an average of 4 nonstop flights operate from San Francisco Intl. Airport (SFO) to Changi Airport (SIN). Choose the departure that best fits your itinerary.
What are the most popular departure times for flights from San Francisco Intl. Airport (SFO) to Changi Airport (SIN)?
Flights between SFO and SIN are busiest at 9 AM. For a more relaxed trip and possibly cheaper tickets, choose a time when demand is lower.
What day of the week has the most flights from SFO to SIN?
Fly on a Saturday if you’re looking for the best selection of flights from San Francisco Intl. Airport (SFO) to Changi Airport (SIN).
What is the earliest flight from San Francisco Intl. Airport (SFO) to Changi Airport (SIN)?
The first flight of the day jetting off from San Francisco Intl. Airport (SFO) is at around 9:40AM UTC-8. Board this flight and you’ll land at Changi Airport (SIN) at approximately 7:05PM UTC+8. The entire trip takes 17h 25m.
How long does it take to fly from San Francisco Intl. Airport (SFO) to Changi Airport (SIN)?
The average flight time from SFO to SIN is 17 hours and 27 minutes, covering a total distance of 8,400 mi.
What airline has the least delays from SFO to SIN?
Consider traveling with United Airlines if you’d like to go straight from San Francisco Intl. Airport (SFO) to Changi Airport (SIN) without any holdups. This airline has the strongest track record for punctuality, with an on-time performance of 80%. Want real-time updates? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Changi Airport (SIN)?
To avoid possible delays on the San Francisco Intl. Airport (SFO) to Changi Airport (SIN) route, fly before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Singapore from San Francisco Intl. Airport (SFO)?
Compare your flight options from San Francisco Intl. Airport (SFO) to Changi Airport (SIN). This is the only airport in Singapore you can touch down at if you’re taking a direct flight.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Changi Airport (SIN) last-minute?
Booking your flight from SFO to SIN right before your getaway is generally more expensive. But if you’re flexible with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a SFO to SIN flight and hotel package?
You can save money by booking a SFO to SIN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one convenient place. Once you’ve chosen your preferred flights and accommodations, you can add extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Changi Airport (SIN)?
If you booked your SFO to SIN flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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*Available to One Key members.