AirHint found the following cheapest one-way flights from San Francisco (SFO) to Singapore (SIN) in May 2026 (see full year).
One-Way flights
| 02 May | Asiana Airlines | ||
| 13 May | Asiana Airlines | ||
| 08 May | Asiana Airlines | ||
| 14 May | Korean Air | ||
| 03 May | Delta | ||
| 13 May | United | direct | |
| 14 May | United | direct | |
| 22 May | Korean Air | ||
| 02 May | United | direct | |
| 20 May | Delta |
Also check the deals for return flights from San Francisco to Singapore in May.
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