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

Return flights

22 Sep - 26 Sep	Ethiopian Airlines
25 Sep - 02 Oct	Ethiopian Airlines
09 Sep - 16 Sep	LATAM Airlines Group
08 Sep - 30 Sep	Ethiopian Airlines
10 Sep - 19 Sep	Ethiopian Airlines
18 Sep - 25 Sep	Ethiopian Airlines
17 Sep - 05 Oct	Ethiopian Airlines
16 Sep - 25 Sep	Qatar Airways
08 Sep - 15 Sep	Ethiopian Airlines
10 Sep - 29 Sep	Qatar Airways
19 Sep - 21 Sep	Ethiopian Airlines
08 Sep - 25 Sep	Ethiopian Airlines
15 Sep - 12 Oct	Qatar Airways
27 Sep - 04 Oct	Qatar Airways
26 Sep - 03 Oct	Ethiopian Airlines
22 Sep - 10 Oct	Emirates
26 Sep - 10 Oct	Emirates
16 Sep - 01 Oct	Ethiopian Airlines
24 Sep - 01 Oct	Ethiopian Airlines
15 Sep - 01 Oct	Ethiopian Airlines

Also check the deals for one-way flights from Sao Paulo 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 Sao Paulo to Bangkok in September from $1654

Return flights