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

Return flights

14 Oct - 22 Oct	Arajet
08 Oct - 13 Oct	Arajet
22 Oct - 29 Oct	Arajet
05 Oct - 17 Oct	Arajet
21 Oct - 29 Oct	Arajet
07 Oct - 15 Oct	Arajet
08 Oct - 15 Oct	Arajet
01 Oct - 08 Oct	Arajet
10 Oct - 19 Oct	Avianca
12 Oct - 17 Oct	Avianca
30 Oct - 15 Nov	Avianca
30 Oct - 02 Nov	Avianca
31 Oct - 07 Nov	Copa
25 Oct - 02 Nov	Copa
31 Oct - 20 Nov	Copa
31 Oct - 17 Nov	Avianca

Also check the deals for one-way flights from Mexico City to Sao Paulo in October.

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 October from 364€

Return flights