What day of the week experiences the fewest flight delays on this route?

Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

What is the most punctual flight time for San Francisco to Singapore flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

How often are flights from San Francisco to Singapore delayed?

About 17% of weekly flights between San Francisco and Singapore have experienced delays in the past year, with the average delay time being 147 minutes.

Which airline has the best punctuality record on San Francisco to Singapore flights?

Over the past year, Singapore Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

How popular is this San Francisco to Singapore flight route?

The San Francisco to Singapore Changi flight path was viewed by 28 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How long is the flight from San Francisco to Singapore?

Departing from San Francisco to Singapore will take you 20h 55m. San Francisco and Singapore are separated by a distance of 13572 km. This flight may include one or multiple stops.

What are the cheapest airlines flying from San Francisco to Singapore round-trip?

According to our current data, Singapore Airlines (S$ 754), and United Airlines (S$ 891) offers the cheapest pricing from San Francisco to Singapore. Singapore Airlines is 37% cheaper than the average price of flights available within the next 90 days to this destination.

Weekly flight availability from San Francisco to Singapore

The most flights from SFO to SIN are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

In terms of precipitation, rainfall in Singapore ranges from 150.0 - 269.0 inches per month. December is typically the wettest month, when rainfall can reach 269.0 mm. July is typically the driest time to visit Singapore when rainfall is around 150.0 mm.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 26.0 C).

What are the cheapest flights from San Francisco to Singapore?

The cheapest flight price from San Francisco to Singapore is S$ 1,029. On average you can expect to pay S$ 1,318. The most popular route, (San Francisco - Singapore Changi), can usually be booked for S$ 755.

What airports do I use to fly from San Francisco to Singapore?

Singapore Changi is the airport most travellers will use when flying to Singapore from San Francisco. Booking flights from San Francisco (SFO) to Changi (SIN) should be relatively easy as there are 4 daily flights to Singapore from 2 different airlines. 16h 05m is how long a flight from San Francisco to Singapore Changi will take if you book a nonstop flight.

Can I find deals for flights from San Francisco to Singapore that include hotel bookings?

Yes. In addition to deals on San Francisco to Singapore flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from San Francisco to Singapore?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Singapore.

Can I find deals for business class flights from San Francisco to Singapore?

Yes. Cheapflights offers flight deals from San Francisco to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

S$ 476+ Cheap Flights from San Francisco to Singapore

Cheapflights Tip: The best prices from San Francisco to Singapore Changi are usually found in August or September, booked 79 days in advance, depart on a Sunday or Wednesday and return on a Wednesday

Cheap flight deals from San Francisco to Singapore

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from San Francisco to Singapore
Explore the most affordable flight options available from San Francisco to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2026.

Mon 2-1122:40 -

Nonstop17h 20m

Mon 9-1122:20 -

Nonstop14h 55m

Deal found 5-10S$ 892

Thu 5-1110:40 -

Nonstop17h 35m

Wed 18-1110:10 -

Nonstop15h 05m

Deal found 5-10S$ 895

Thu 5-1111:05 -

1 stop21h 40m

Wed 18-1122:20 -

Nonstop14h 55m

Deal found 5-10S$ 904

Mon 26-1008:45 -

2 stops23h 55m

Sun 8-1110:10 -

Nonstop15h 05m

Deal found 5-10S$ 905

Tue 10-1110:45 -

1 stop20h 55m

Sun 15-1122:20 -

Nonstop14h 55m

Deal found 5-10S$ 908

Tue 27-1013:50 -

2 stops26h 05m

Sun 8-1110:10 -

Nonstop15h 05m

Deal found 5-10S$ 910

Tue 3-1111:45 -

1 stop25h 15m

Mon 9-1101:40 -

1 stop23h 55m

Deal found 6-10S$ 912

Tue 3-1109:40 -

Nonstop17h 25m

Tue 10-1109:05 -

Nonstop14h 45m

Deal found 6-10S$ 917

Mon 9-1108:45 -

2 stops22h 55m

Tue 24-1110:45 -

1 stop20h 45m

Deal found 5-10S$ 919

Sat 7-1112:00 -

1 stop26h 50m

Fri 13-1117:45 -

1 stop31h 45m

Deal found 9-10S$ 922

Mon 26-1022:40 -

Nonstop17h 20m

Sun 8-1110:10 -

Nonstop15h 05m

Deal found 5-10S$ 924

Find flight deals from San Francisco to Singapore

Round-trip from	S$ 892
One-way from	S$ 476
Popular in	December
Cheapest in	August
Average price	S$ 958
Good round-trip deal	S$ 1,029 or less

United Airlines
2-11-9-11
Nonstop
32h 15m total
San Francisco to Singapore

Search Deals

Singapore Airlines
11-1-31-12
Nonstop
17h 25m total
San Francisco to Singapore

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (S$ 163 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (S$ 87 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from San Francisco to Singapore Changi.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoSingapore

SFO San Francisco - SIN Singapore Changi

SFOSIN

San Francisco

Wed 24-3

12:45-05:00

1 stop25h 15m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 488

Fastest return journey

San FranciscoSingapore

SFO San Francisco - SIN Singapore Changi

SFOSIN

San Francisco

Tue 24-11

10:40-20:15

Nonstop17h 35m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 508

San FranciscoSingapore

SFO San Francisco - SIN Singapore Changi

SFOSIN

San Francisco

Tue 19-1

10:35-20:15

Nonstop17h 40m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 508

San FranciscoSingapore

SFO San Francisco - SIN Singapore Changi

SFOSIN

San Francisco

Wed 25-11

10:40-20:15

Nonstop17h 35m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 508

San FranciscoSingapore

SFO San Francisco - SIN Singapore Changi

SFOSIN

San Francisco

Wed 10-3

11:45-05:00

1 stop25h 15m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 520

San FranciscoSingapore

SFO San Francisco - SIN Singapore Changi

SFOSIN

San Francisco

Fri 15-1

10:45-23:40

1 stop20h 55m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 524

San FranciscoSingapore

SFO San Francisco - SIN Singapore Changi

SFOSIN

San Francisco

Mon 11-1

07:10-06:55

2 stops31h 45m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 526

San FranciscoSingapore

SFO San Francisco - SIN Singapore Changi

SFOSIN

San Francisco

Fri 12-3

13:05-00:15

2 stops43h 10m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 527

San FranciscoSingapore

SFO San Francisco - SIN Singapore Changi

SFOSIN

San Francisco

Thu 29-10

08:45-23:40

2 stops23h 55m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 530

San FranciscoSingapore

SFO San Francisco - SIN Singapore Changi

SFOSIN

San Francisco

Tue 10-11

10:45-23:40

1 stop20h 55m

Singapore Changi

Sun 15-11

22:20-21:15

Nonstop14h 55m

S$ 908

Flights are sorted by cheapest return flights first.

Deals found on 5-10

Showing 1-10 of 21 resultsSorted by cheapest first

Best time to book a flight from San Francisco to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from San Francisco with our price prediction graph.

SFO-SIN

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Singapore

Prices

Airlines

Delays

How far ahead should I book a flight from San Francisco to Singapore?

The best time to book flights from San Francisco to Singapore is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Francisco to Singapore?

Currently, August is the cheapest month in which you can book a flight from San Francisco to Singapore (average of S$ 891). Flying from San Francisco to Singapore in December is currently the most expensive (average of S$ 1,931). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to SIN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Francisco to Singapore as you normally would.

How much does it cost for a return flight from San Francisco to Singapore?

Airfare is typical for this route at the moment.

San Francisco to Singapore flights typically cost between S$ 891 and S$ 1,189 in November.
The cheapest return price found within the last 5 days was S$ 892 on United Airlines (2 Nov–9 Nov).

Reviews of airlines servicing Singapore

Get a feel of what it's like to fly with Singapore Airlines and United Airlines from San Francisco to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.2

Very Good

1,624 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Judith,Sept 2026

SFO - SIN

Great except for giving me a dinner with rice in it that I didn’t order.

Singapore Airlines

8.2

Very Good

1,624 reviews

Singapore Airlines

8.2

Very Good

1,624 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Judith,Sept 2026

SFO - SIN

Great except for giving me a dinner with rice in it that I didn’t order.

United Airlines

7.4

Good

10,327 reviews

Singapore Airlines

8.2

Very Good

1,624 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Judith,Sept 2026

SFO - SIN

Great except for giving me a dinner with rice in it that I didn’t order.

Related info for your journey

What airports do I use to fly from San Francisco to Singapore?
Singapore Changi is the airport most travellers will use when flying to Singapore from San Francisco. Booking flights from San Francisco (SFO) to Changi (SIN) should be relatively easy as there are 4 daily flights to Singapore from 2 different airlines. 16h 05m is how long a flight from San Francisco to Singapore Changi will take if you book a nonstop flight.
How popular is this San Francisco to Singapore flight route?
The San Francisco to Singapore Changi flight path was viewed by 28 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from San Francisco to Singapore?
Departing from San Francisco to Singapore will take you 20h 55m. San Francisco and Singapore are separated by a distance of 13572 km. This flight may include one or multiple stops.
What are the cheapest airlines flying from San Francisco to Singapore round-trip?
According to our current data, Singapore Airlines (S$ 754), and United Airlines (S$ 891) offers the cheapest pricing from San Francisco to Singapore. Singapore Airlines is 37% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest flights from San Francisco to Singapore?
The cheapest flight price from San Francisco to Singapore is S$ 1,029. On average you can expect to pay S$ 1,318. The most popular route, (San Francisco - Singapore Changi), can usually be booked for S$ 755.
Can I find deals for flights from San Francisco to Singapore that include hotel bookings?
Yes. In addition to deals on San Francisco to Singapore flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Francisco to Singapore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Singapore.
Can I find deals for business class flights from San Francisco to Singapore?
Yes. Cheapflights offers flight deals from San Francisco to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Francisco to Singapore?
Currently, August is the cheapest month in which you can book a flight from San Francisco to Singapore (average of S$ 891). Flying from San Francisco to Singapore in December is currently the most expensive (average of S$ 1,931). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Fly from San Francisco to Singapore on these airlines

United Airlines flights from San Francisco to Singapore Changi

Singapore Airlines flights from San Francisco to Singapore Changi

Top 2 airlines flying from San Francisco to Singapore

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	CheapestS$ 754	AverageS$ 1,176	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
United Airlines	CheapestS$ 891	AverageS$ 1,198	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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How does Cheapflights help users find flights from San Francisco to Singapore?

Cheapflights makes it easy to find San Francisco to Singapore flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Singapore?

Cheapflights simply makes it quick and affordable to book flights from San Francisco to Singapore by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from San Francisco to Singapore with no change fees?

Certainly. Search results for flights to Singapore from San Francisco shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from San Francisco to Singapore become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Singapore from San Francisco today and book when prices fit your budget.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from San Francisco to Singapore from S$ 476

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11-1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from San Francisco to Singapore

Cheapest flights from San Francisco to SingaporeExplore the most affordable flight options available from San Francisco to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2026.

Explore the most affordable flight options available from San Francisco to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2026.

Best flights from San Francisco to SingaporeDiscover carefully curated flight deals from San Francisco to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.

Discover carefully curated flight deals from San Francisco to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.

Direct flights from San Francisco to SingaporeExplore direct flight options from San Francisco to Singapore based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 October 2026.

Explore direct flight options from San Francisco to Singapore based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 October 2026.

Last-minute flights from San Francisco to SingaporeDiscover last-minute flight deals from San Francisco to Singapore. Data last updated 10 October 2026 and is based on user searches.

Discover last-minute flight deals from San Francisco to Singapore. Data last updated 10 October 2026 and is based on user searches.

One-way flights from San Francisco to SingaporeSearch for one-way flight options from San Francisco to Singapore. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.

Search for one-way flight options from San Francisco to Singapore. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.

Find flight deals from San Francisco to Singapore

Round-trip from

One-way from

Popular in

Cheapest in

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Good round-trip deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Singapore that are best for you.

Best time to book a flight from San Francisco to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from San Francisco with our price prediction graph.

Cheapflights Insights

How far ahead should I book a flight from San Francisco to Singapore?

The best time to book flights from San Francisco to Singapore is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Francisco to Singapore?

What is the cheapest time of day to fly from SFO to SIN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Francisco to Singapore as you normally would.

How much does it cost for a return flight from San Francisco to Singapore?

Airfare is typical for this route at the moment.

San Francisco to Singapore flights typically cost between S$ 891 and S$ 1,189 in November.The cheapest return price found within the last 5 days was S$ 892 on United Airlines (2 Nov–9 Nov).

Weekly flight availability from San Francisco to Singapore

The most flights from SFO to SIN are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

How often are flights from San Francisco to Singapore delayed?

About 17% of weekly flights between San Francisco and Singapore have experienced delays in the past year, with the average delay time being 147 minutes.

What is the most punctual flight time for San Francisco to Singapore flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on San Francisco to Singapore flights?

Over the past year, Singapore Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

Reviews of airlines servicing Singapore

Get a feel of what it's like to fly with Singapore Airlines and United Airlines from San Francisco to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airports do I use to fly from San Francisco to Singapore?

How popular is this San Francisco to Singapore flight route?

How long is the flight from San Francisco to Singapore?

What are the cheapest airlines flying from San Francisco to Singapore round-trip?

What are the cheapest flights from San Francisco to Singapore?

Can I find deals for flights from San Francisco to Singapore that include hotel bookings?

How can I find direct flights from San Francisco to Singapore?

Can I find deals for business class flights from San Francisco to Singapore?

What is the cheapest month to book a flight from San Francisco to Singapore?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from San Francisco to Singapore on these airlines

Choose from the following airlines for your flight from San Francisco to Singapore. Flights are based on user searches made on Cheapflights and were last updated on 10 October 2026.

Alternative routes for San Francisco to Singapore

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Singapore by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from San Francisco to Singapore by cabin class

Find flights from San Francisco to Singapore, based on your preferred cabin class, be it economy, premium economy, business, or first class.

San Francisco and Singapore flights

Browse other San Francisco and Singapore flight options. Last updated on 10 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Other flights to Singapore

Explore flights to Singapore departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 10 October 2026.

Top 2 airlines flying from San Francisco to Singapore

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How does Cheapflights help users find flights from San Francisco to Singapore?

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Singapore?

Can Cheapflights find flights from San Francisco to Singapore with no change fees?

Can Cheapflights notify me if prices for flights from San Francisco to Singapore become cheaper?

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Cheapest flights from San Francisco to Singapore
Explore the most affordable flight options available from San Francisco to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2026.

Best flights from San Francisco to Singapore
Discover carefully curated flight deals from San Francisco to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.

Direct flights from San Francisco to Singapore
Explore direct flight options from San Francisco to Singapore based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 October 2026.

Last-minute flights from San Francisco to Singapore
Discover last-minute flight deals from San Francisco to Singapore. Data last updated 10 October 2026 and is based on user searches.

One-way flights from San Francisco to Singapore
Search for one-way flight options from San Francisco to Singapore. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.

San Francisco to Singapore flights typically cost between S$ 891 and S$ 1,189 in November.
The cheapest return price found within the last 5 days was S$ 892 on United Airlines (2 Nov–9 Nov).