AirHint found the following cheapest one-way flights from Sao Paulo (GRU) to Bangkok (BKK) in September 2025 (see full year).

One-Way flights

25 Sep	LATAM Airlines Group
22 Sep	LATAM Airlines Group
26 Sep	LATAM Airlines Group
24 Sep	LATAM Airlines Group
08 Sep	LATAM Airlines Group
29 Sep	Qatar Airways
15 Sep	Qatar Airways
03 Sep	Qatar Airways
07 Sep	GOL Linhas Aéreas
09 Sep	Copa

Also check the deals for return 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 one-way flights from Sao Paulo to Bangkok in September from $675

One-Way flights