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

Return flights

03 Dec - 10 Dec	Aeromexico	direct
01 Dec - 05 Dec	Aeromexico	direct
25 Dec - 07 Jan	Arajet
06 Dec - 14 Dec	Avianca
08 Dec - 13 Jan	Aeromexico	direct
14 Dec - 11 Jan	Arajet
25 Dec - 09 Jan	Arajet
25 Dec - 08 Jan	Arajet
04 Dec - 20 Dec	Arajet
21 Dec - 04 Jan	Viva Aerobus
11 Dec - 17 Dec	Copa
28 Dec - 12 Jan	Arajet
11 Dec - 19 Dec	Arajet
04 Dec - 20 Dec	Aeromexico	direct
06 Dec - 14 Dec	Aeromexico	direct
27 Dec - 07 Jan	Arajet
26 Dec - 07 Jan	Viva Aerobus
06 Dec - 19 Dec	Copa
30 Dec - 03 Jan	Avianca
11 Dec - 17 Dec	Aeromexico	direct

Also check the deals for one-way flights from Mexico City to Sao Paulo 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 Mexico City to Sao Paulo in December from $454

Return flights