Cheapest return flights from San Francisco to Singapore in October from $639

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

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

Return flights

22 Oct - 30 Oct Asiana Airlines
21 Oct - 28 Oct Asiana Airlines
22 Oct - 29 Oct Asiana Airlines
22 Oct - 13 Nov Asiana Airlines
28 Oct - 04 Nov Asiana Airlines
29 Oct - 08 Nov Asiana Airlines
22 Oct - 06 Nov Asiana Airlines
22 Oct - 12 Nov Asiana Airlines
22 Oct - 11 Nov Asiana Airlines
22 Oct - 04 Nov Asiana Airlines
14 Oct - 21 Oct Singapore Airlines direct
21 Oct - 28 Oct Singapore Airlines direct
22 Oct - 29 Oct Singapore Airlines direct
22 Oct - 06 Nov Singapore Airlines direct
22 Oct - 12 Nov Singapore Airlines direct
22 Oct - 11 Nov Singapore Airlines direct
01 Oct - 07 Oct Singapore Airlines direct
01 Oct - 06 Oct Singapore Airlines direct
20 Oct - 27 Oct Korean Air
20 Oct - 27 Oct Singapore Airlines direct

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

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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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