AirHint found the following cheapest return flights from San Francisco (SFO) to Mumbai (BOM) in September 2025 (see full year).

Return flights

24 Sep - 08 Oct	Air India
25 Sep - 02 Oct	Air India
28 Sep - 05 Oct	Air India
21 Sep - 05 Oct	Air India
18 Sep - 03 Oct	Air India
27 Sep - 04 Oct	Air India
10 Sep - 29 Oct	Air India
14 Sep - 13 Oct	Air India
11 Sep - 25 Sep	Cathay Pacific
22 Sep - 30 Sep	Cathay Pacific
08 Sep - 22 Sep	Cathay Pacific
10 Sep - 28 Sep	Cathay Pacific
07 Sep - 28 Sep	Cathay Pacific
26 Sep - 12 Oct	Cathay Pacific
26 Sep - 11 Oct	Cathay Pacific
09 Sep - 30 Sep	Cathay Pacific
15 Sep - 18 Sep	Cathay Pacific
15 Sep - 28 Sep	Cathay Pacific
15 Sep - 30 Sep	Cathay Pacific
05 Sep - 28 Sep	Cathay Pacific

Also check the deals for one-way flights from San Francisco to Mumbai in September.

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 San Francisco to Mumbai in September from $601

Return flights