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

Return flights

02 Dec - 13 Dec	Arajet
03 Dec - 09 Dec	Arajet
03 Dec - 13 Dec	Arajet
08 Dec - 13 Dec	Arajet
09 Dec - 20 Dec	Arajet
04 Dec - 13 Dec	LATAM Airlines Group
04 Dec - 11 Dec	LATAM Airlines Group
01 Dec - 06 Dec	Copa
01 Dec - 31 Dec	Copa
05 Dec - 10 Dec	LATAM Airlines Group
24 Dec - 20 Jan	Arajet
14 Dec - 14 Jan	Copa
18 Dec - 14 Jan	Azul Airlines
24 Dec - 01 Jan	Arajet
16 Dec - 05 Jan	LATAM Airlines Group
31 Dec - 15 Jan	Copa
31 Dec - 13 Jan	Copa
24 Dec - 08 Jan	Arajet
24 Dec - 07 Jan	Arajet
16 Dec - 07 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 $427

Return flights