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

Return flights

15 Oct - 22 Oct	Arajet
24 Oct - 28 Oct	Arajet
15 Oct - 28 Oct	Arajet
24 Oct - 30 Oct	Arajet
01 Oct - 07 Oct	Arajet
06 Oct - 15 Oct	Arajet
27 Oct - 08 Nov	Arajet
20 Oct - 30 Oct	Arajet
03 Oct - 18 Oct	Arajet
01 Oct - 08 Oct	Arajet
10 Oct - 16 Oct	Arajet
29 Oct - 02 Nov	Arajet
27 Oct - 03 Nov	Arajet
29 Oct - 03 Nov	Arajet
30 Oct - 06 Nov	Avianca
30 Oct - 07 Nov	Avianca

Also check the deals for one-way flights from Sao Paulo to Cancun 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 Sao Paulo to Cancun in October from $388

Return flights