Cheapest return flights from San Francisco to Singapore in May from $620

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

Return flights

11 May - 14 May Asiana Airlines
11 May - 18 May Asiana Airlines
20 May - 04 Jun Asiana Airlines
21 May - 04 Jun Asiana Airlines
11 May - 22 May Asiana Airlines
04 May - 11 May Korean Air
01 May - 10 May Asiana Airlines
21 May - 04 Jun Singapore Airlines direct
04 May - 11 May Singapore Airlines direct
20 May - 04 Jun Singapore Airlines direct
11 May - 18 May Singapore Airlines direct
11 May - 22 May Singapore Airlines direct
11 May - 14 May Singapore Airlines direct
01 May - 10 May Singapore Airlines direct
30 May - 07 Jun Air Canada
28 May - 13 Jun United direct
30 May - 07 Jun United direct

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

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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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