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

Return flights

03 Sep - 13 Sep	Arajet
07 Sep - 18 Sep	Arajet
03 Sep - 09 Sep	Avianca
06 Sep - 12 Sep	Copa
22 Sep - 28 Sep	Copa
01 Sep - 10 Sep	Copa
03 Sep - 08 Sep	Copa
23 Sep - 30 Sep	Copa
08 Sep - 15 Sep	Copa
16 Sep - 23 Sep	Copa
22 Sep - 06 Oct	Avianca
18 Sep - 06 Oct	Avianca
22 Sep - 12 Oct	Avianca
22 Sep - 10 Oct	Avianca
22 Sep - 11 Oct	Avianca

Also check the deals for one-way flights from Sao Paulo to Cancun 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 Cancun in September from $527

Return flights