AirHint found the following cheapest return flights from Rio De Janeiro (SDU) to Bangkok (BKK) in September 2025 (see full year).

Return flights

25 Sep - 02 Oct	Ethiopian Airlines
30 Sep - 07 Oct	Azul Airlines
29 Sep - 06 Oct	Azul Airlines
09 Sep - 16 Sep	Ethiopian Airlines
16 Sep - 23 Sep	Ethiopian Airlines
18 Sep - 25 Sep	Ethiopian Airlines
17 Sep - 24 Sep	Ethiopian Airlines
08 Sep - 15 Sep	Azul Airlines
10 Sep - 17 Sep	Azul Airlines
22 Sep - 29 Sep	Azul Airlines
15 Sep - 23 Sep	Ethiopian Airlines
12 Sep - 19 Sep	Azul Airlines
11 Sep - 18 Sep	LATAM Airlines Group
27 Sep - 04 Oct	Ethiopian Airlines
24 Sep - 01 Oct	ITA Airways
28 Sep - 05 Oct	Azul Airlines
26 Sep - 03 Oct	Ethiopian Airlines

Also check the deals for one-way flights from Rio De Janeiro to Bangkok 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 Bangkok in September from $1353

Return flights