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

Return flights

27 Aug - 02 Sep	Arajet
04 Aug - 12 Aug	Arajet
18 Aug - 24 Aug	Arajet
20 Aug - 26 Aug	Arajet
08 Aug - 14 Aug	Arajet
22 Aug - 24 Aug	Arajet
22 Aug - 30 Aug	Arajet
04 Aug - 14 Aug	Arajet
13 Aug - 21 Aug	Arajet
18 Aug - 21 Aug	Arajet
15 Aug - 24 Aug	Arajet
29 Aug - 06 Sep	Arajet
29 Aug - 05 Sep	Arajet
29 Aug - 12 Sep	Arajet
31 Aug - 06 Sep	Copa
25 Aug - 01 Sep	Copa
28 Aug - 04 Sep	Copa
22 Aug - 10 Sep	Copa
31 Aug - 09 Sep	Copa
28 Aug - 03 Sep	Copa

Also check the deals for one-way flights from Sao Paulo to Cancun in August.

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 August from $405

Return flights