Cheapest return flights from Singapore to San Francisco in September from $703

Best time to book flights for Singapore (SIN) to San Francisco (SFO) flights at AirHint

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

Return flights

03 Sep - 09 Sep Singapore Airlines direct
11 Sep - 18 Sep Singapore Airlines direct
12 Sep - 19 Sep Singapore Airlines direct
27 Sep - 11 Oct Singapore Airlines direct
23 Sep - 30 Sep Singapore Airlines direct
08 Sep - 13 Sep Singapore Airlines direct
17 Sep - 24 Sep United direct
27 Sep - 13 Oct United direct
18 Sep - 02 Oct Delta

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

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