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

Return flights

17 Oct - 26 Oct	Arajet
14 Oct - 21 Oct	GOL Linhas Aéreas
10 Oct - 14 Oct	Arajet
15 Oct - 26 Oct	Arajet
20 Oct - 26 Oct	Arajet
17 Oct - 22 Oct	Copa
08 Oct - 16 Oct	Copa
16 Oct - 22 Oct	Copa
13 Oct - 18 Oct	Copa
16 Oct - 19 Oct	Copa
29 Oct - 04 Nov	Copa
25 Oct - 02 Nov	Copa
27 Oct - 14 Nov	Copa
26 Oct - 13 Nov	Copa
28 Oct - 14 Nov	Copa
26 Oct - 12 Nov	Copa
31 Oct - 04 Nov	Copa
31 Oct - 10 Nov	Copa
28 Oct - 06 Nov	Copa
27 Oct - 03 Nov	Copa

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 $426

Return flights