For a stress-free departure, use SFO's AirTrain to quickly navigate between terminals and reach your gate efficiently.

Most accurate provider | Justfly.com 3 stars |
|---|---|
Most trusted provider | Justfly.com 3 stars |
Round-trip from | $639 (FlightHub) |
One-way from | $339 (United Airlines) |
Popular in | December |
Cheapest in | September |
Average price | $1,460 |
Good round-trip deal | $660 or less |
Good one-way deal | $339 or less |
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Mon 1/26
10:35 pm-8:00 am
Nonstop17h 25m
Singapore Changi
Mon 2/2
10:20 pm-9:15 pm
Nonstop14h 55m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Thu 1/22
10:35 pm-8:00 am
Nonstop17h 25m
Singapore Changi
Thu 2/5
10:20 pm-9:15 pm
Nonstop14h 55m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Tue 1/27
10:35 am-8:15 pm
Nonstop17h 40m
Singapore Changi
Wed 2/4
10:10 am-9:00 am
Nonstop14h 50m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Sat 1/17
12:20 am-6:55 am
1 stop38h 35m
Singapore Changi
Sun 2/1
10:00 am-8:50 am
Nonstop14h 50m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Sat 1/31
10:35 am-8:15 pm
Nonstop17h 40m
Singapore Changi
Thu 2/5
10:45 am-3:20 pm
1 stop20h 35m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Sat 4/11
12:40 pm-11:40 pm
1 stop20h 00m
Singapore Changi
Sat 4/18
1:10 am-10:40 am
1 stop24h 30m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Mon 4/6
12:40 pm-11:40 pm
1 stop20h 00m
Singapore Changi
Tue 4/14
7:30 am-10:40 am
1 stop18h 10m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Fri 4/10
12:40 pm-11:40 pm
1 stop20h 00m
Singapore Changi
Mon 4/20
7:30 am-10:40 am
1 stop18h 10m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Sun 2/1
11:40 am-8:25 pm
1 stop40h 45m
Singapore Changi
Tue 3/31
10:30 pm-10:40 am
1 stop27h 10m
San FranciscoSingapore
SFO - SIN
SFOSIN
San Francisco
Mon 4/6
12:40 pm-11:40 pm
1 stop20h 00m
Singapore Changi
Wed 4/15
7:30 am-10:40 am
1 stop18h 10m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
The best time to book flights from San Francisco to Singapore is 86 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.
Currently, February is the cheapest month in which you can book a flight from San Francisco to Singapore (average of $390). Flying from San Francisco to Singapore in June is currently the most expensive (average of $768). 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.
A simple way to save on the total cost of your ticket is to fly from San Francisco to Singapore in the morning. If you’re flexible enough to do this you can expect to save up to 34% on your trip compared to booking a flight in the afternoon.
About 17% of weekly flights between San Francisco and Singapore have experienced delays in the past year, with the average delay time being 116 minutes.
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Singapore Airlines have had the lowest number of delays on this route, with just 12% of flights being delayed.
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
BKK - ICN
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
BKK - ICN
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
BKK - ICN
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
BKK - ICN
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
BKK - ICN
Boarding
Entertainment
Comfort
Crew
Overall
Food
Reviews
Anonymous,Dec 2025
BKK - ICN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$573 | Average$805 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$588 | Average$671 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$602 | Average$672 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$643 | Average$993 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$655 | Average$743 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$660 | Average$1,084 | FlexibilityNo cancel fee | On-time80% | |
| Cheapest$664 | Average$730 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$680 | Average$770 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$710 | Average$2,216 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$727 | Average$883 | FlexibilityNo cancel fee | On-time67% |