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

Return flights

05 Dec - 31 Dec	Air China
01 Dec - 31 Dec	Air China
09 Dec - 31 Dec	Air China
09 Dec - 01 Jan	Air China
01 Dec - 08 Dec	LATAM Airlines Group
04 Dec - 28 Jan	LATAM Airlines Group
07 Dec - 27 Dec	Air China
15 Dec - 11 Jan	LATAM Airlines Group
03 Dec - 09 Jan	LATAM Airlines Group
15 Dec - 10 Jan	LATAM Airlines Group
14 Dec - 14 Jan	LATAM Airlines Group
02 Dec - 14 Jan	Air China
02 Dec - 17 Jan	Air China
02 Dec - 15 Dec	Air China
01 Dec - 20 Dec	Air China
28 Dec - 23 Jan	LATAM Airlines Group
27 Dec - 12 Jan	LATAM Airlines Group
15 Dec - 31 Dec	Air China
02 Dec - 25 Dec	KLM
02 Dec - 16 Dec	KLM

Also check the deals for one-way flights from Sao Paulo to Bangkok in December.

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 December from $1109

Return flights