AirHint found the following cheapest return flights from Sao Paulo (GRU) to Mexico City (MEX) in September 2026 (see full year).

Return flights

18 Sep - 22 Sep	Copa
15 Sep - 24 Sep	Copa
11 Sep - 18 Sep	Copa
16 Sep - 20 Sep	Copa
17 Sep - 21 Sep	Copa
08 Sep - 23 Sep	Copa
08 Sep - 21 Sep	Copa
12 Sep - 26 Sep	Copa
12 Sep - 25 Sep	Copa
03 Sep - 06 Sep	Copa
24 Sep - 09 Oct	Avianca
24 Sep - 07 Oct	Avianca
24 Sep - 01 Oct	Avianca
24 Sep - 08 Oct	Avianca
24 Sep - 05 Oct	Avianca
17 Sep - 02 Oct	Avianca
12 Sep - 02 Oct	Avianca
17 Sep - 07 Oct	Avianca
17 Sep - 01 Oct	Avianca
12 Sep - 01 Oct	Avianca

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

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 September from $507

Return flights