Cheapest return flights from San Francisco to Singapore in September from $614

AirHint found the following cheapest return flights from San Francisco (SFO) to Singapore (SIN) in September 2025 (see full year).

Return flights

29 Sep - 06 Oct Air India
21 Sep - 24 Sep Philippine Airlines
17 Sep - 28 Sep Philippine Airlines
22 Sep - 01 Oct Philippine Airlines
22 Sep - 01 Oct United direct
29 Sep - 31 Oct United direct
30 Sep - 09 Oct United direct
18 Sep - 06 Oct United direct
29 Sep - 06 Oct United direct
15 Sep - 01 Oct United direct
20 Sep - 23 Sep Philippine Airlines
12 Sep - 28 Sep Philippine Airlines
14 Sep - 29 Sep Philippine Airlines
26 Sep - 30 Sep Philippine Airlines
14 Sep - 21 Sep Philippine Airlines
09 Sep - 17 Sep Philippine Airlines
12 Sep - 19 Sep Philippine Airlines
20 Sep - 28 Sep Philippine Airlines

Also check the deals for one-way flights from San Francisco to Singapore in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Feel free to contact us with any feedback or request another flight research.