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

Return flights

03 Mar - 11 Mar	Philippine Airlines
22 Mar - 25 Mar	United	direct
03 Mar - 11 Mar	United	direct
29 Mar - 18 Apr	Philippine Airlines
21 Mar - 30 Mar	United	direct
20 Mar - 03 Apr	United	direct
20 Mar - 30 Mar	Singapore Airlines	direct
28 Mar - 18 Apr	Singapore Airlines	direct
29 Mar - 18 Apr	Singapore Airlines	direct
18 Mar - 29 Mar	Delta
08 Mar - 14 Mar	Delta
13 Mar - 18 Mar	Delta
13 Mar - 22 Mar	Delta
13 Mar - 22 Apr	Delta

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

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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Cheapest return flights from Singapore to San Francisco in March from 508€

Return flights