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

Return flights

05 Dec - 20 Dec	Arajet
02 Dec - 07 Dec	Arajet
03 Dec - 07 Dec	Arajet
02 Dec - 09 Dec	Arajet
03 Dec - 09 Dec	Arajet
03 Dec - 13 Dec	Arajet
03 Dec - 31 Dec	Copa
02 Dec - 06 Dec	Copa
03 Dec - 05 Dec	Copa
06 Dec - 13 Dec	LATAM Airlines Group
10 Dec - 01 Jan	Copa
18 Dec - 16 Jan	Copa
24 Dec - 20 Jan	Arajet
05 Dec - 05 Jan	Arajet
06 Dec - 05 Jan	LATAM Airlines Group
04 Dec - 05 Jan	LATAM Airlines Group
31 Dec - 30 Jan	Copa
12 Dec - 14 Jan	Arajet
05 Dec - 06 Jan	Copa
31 Dec - 08 Jan	Copa

Also check the deals for one-way flights from Sao Paulo to Cancun 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 Cancun in December from $429

Return flights