AirHint found the following cheapest return flights from Rio De Janeiro (GIG) to Singapore (SIN) in September 2025 (see full year).

Return flights

28 Sep - 05 Oct	British Airways
03 Sep - 10 Sep	Ethiopian Airlines
07 Sep - 14 Sep	Ethiopian Airlines
10 Sep - 17 Sep	Ethiopian Airlines
17 Sep - 24 Sep	Ethiopian Airlines
24 Sep - 01 Oct	Ethiopian Airlines
08 Sep - 15 Sep	Air France
16 Sep - 23 Sep	Air France
09 Sep - 16 Sep	Air France
30 Sep - 07 Oct	LATAM Airlines Group
21 Sep - 28 Sep	Ethiopian Airlines
05 Sep - 12 Sep	Ethiopian Airlines
12 Sep - 19 Sep	Ethiopian Airlines
26 Sep - 03 Oct	Ethiopian Airlines
29 Sep - 06 Oct	Copa
25 Sep - 02 Oct	Emirates
27 Sep - 04 Oct	Copa

Also check the deals for one-way flights from Rio De Janeiro 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 Rio De Janeiro to Singapore in September from 1288€

Return flights