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

Return flights

21 Sep - 27 Sep	Air India
03 Sep - 17 Sep	Air India
11 Sep - 25 Sep	Air India
02 Sep - 16 Sep	Air India
02 Sep - 21 Sep	Air India
03 Sep - 21 Sep	Air India
13 Sep - 02 Oct	Air India
25 Sep - 02 Oct	Air India
30 Sep - 07 Oct	Singapore Airlines
30 Sep - 14 Oct	Singapore Airlines
23 Sep - 07 Oct	Singapore Airlines
11 Sep - 30 Sep	Air India
24 Sep - 08 Oct	Air India
12 Sep - 19 Sep	Air India
03 Sep - 28 Sep	Air India
09 Sep - 23 Sep	Philippine Airlines

Also check the deals for one-way flights from San Francisco to Kuala Lumpur 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 Kuala Lumpur in September from $584

Return flights