Cheapest return flights from San Francisco to Singapore in October from $699

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 - 05 Nov Korean Air
22 Oct - 05 Nov Singapore Airlines direct
11 Oct - 04 Nov Singapore Airlines direct
09 Oct - 23 Oct Vietnam Airlines
09 Oct - 23 Oct United direct
16 Oct - 19 Oct United direct
06 Oct - 24 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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