AirHint found the following cheapest return flights from Sao Paulo (GRU) to Singapore (SIN) in September 2025 (see full year).

Return flights

23 Sep - 05 Oct	Air France
23 Sep - 10 Oct	Air France
23 Sep - 11 Oct	Air China
01 Sep - 11 Oct	Air China
24 Sep - 05 Oct	Air France
24 Sep - 10 Oct	Air France
22 Sep - 05 Oct	Air France
22 Sep - 10 Oct	Air France
24 Sep - 24 Oct	Air France
03 Sep - 15 Sep	Ethiopian Airlines
01 Sep - 10 Sep	Ethiopian Airlines
22 Sep - 06 Oct	Ethiopian Airlines
05 Sep - 10 Sep	Ethiopian Airlines
10 Sep - 18 Sep	Air France
10 Sep - 19 Sep	Ethiopian Airlines
22 Sep - 30 Sep	Air France
03 Sep - 27 Sep	Ethiopian Airlines
24 Sep - 28 Sep	Air France
04 Sep - 11 Sep	Air France
05 Sep - 18 Sep	Qatar Airways

Also check the deals for one-way flights from Sao Paulo to Singapore 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 Sao Paulo to Singapore in September from $1274

Return flights