Cheapest return flights from Ontario to Sao Paulo in September from $1011

Best time to book flights for Ontario (ONT) to Sao Paulo (GRU) flights at AirHint

AirHint found the following cheapest return flights from Ontario (ONT) to Sao Paulo (GRU) in September 2025 (see full year).

Return flights

08 Sep - 15 Sep Avianca
02 Sep - 16 Sep Avianca
06 Sep - 14 Sep Avianca
14 Sep - 21 Sep Avianca
15 Sep - 25 Sep Avianca
02 Sep - 08 Sep Avianca
09 Sep - 18 Sep Avianca
02 Sep - 09 Sep Avianca
09 Sep - 16 Sep Avianca
13 Sep - 27 Sep Avianca
23 Sep - 07 Oct Avianca

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

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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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