Cheapest return flights from San Francisco to Singapore in September from $642

AirHint found the following cheapest return flights from San Francisco (SFO) to Singapore (SIN) in September 2026 (see full year).

Return flights

11 Sep - 25 Sep Korean Air
02 Sep - 21 Sep Korean Air
18 Sep - 26 Sep Philippine Airlines
12 Sep - 26 Sep Asiana Airlines
25 Sep - 02 Oct Singapore Airlines direct
11 Sep - 26 Sep Philippine Airlines
18 Sep - 26 Sep Singapore Airlines direct
02 Sep - 21 Sep Singapore Airlines direct
12 Sep - 26 Sep Singapore Airlines direct
11 Sep - 25 Sep Singapore Airlines direct

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

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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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