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

Return flights

12 Dec - 25 Dec	Copa
09 Dec - 30 Dec	Copa
02 Dec - 10 Dec	Copa
01 Dec - 09 Dec	Copa
02 Dec - 08 Dec	Copa
02 Dec - 07 Dec	Copa
06 Dec - 10 Dec	Copa
10 Dec - 14 Dec	Copa
11 Dec - 29 Dec	Copa
10 Dec - 16 Dec	Copa
08 Dec - 13 Jan	Copa
09 Dec - 14 Jan	Copa
23 Dec - 01 Jan	Aeromexico	direct
25 Dec - 20 Jan	Aeromexico	direct
22 Dec - 01 Jan	Aeromexico	direct
25 Dec - 19 Jan	Aeromexico	direct
10 Dec - 28 Jan	Copa
03 Dec - 28 Jan	Copa
25 Dec - 01 Jan	Aeromexico	direct
25 Dec - 14 Jan	Aeromexico	direct

Also check the deals for one-way flights from Sao Paulo to Mexico City 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 Mexico City in December from $457

Return flights