AirHint found the following cheapest return flights from Ontario (ONT) to Sao Paulo (GRU) in March 2026 (see full year).

Return flights

07 Mar - 28 Mar	Volaris
25 Mar - 28 Mar	Volaris
09 Mar - 17 Mar	Volaris
05 Mar - 12 Mar	Volaris
02 Mar - 09 Mar	Volaris
20 Mar - 28 Mar	Volaris
04 Mar - 12 Mar	Volaris
06 Mar - 08 Mar	Volaris
27 Mar - 03 Apr	Volaris
13 Mar - 22 Mar	Volaris
14 Mar - 22 Mar	Volaris
25 Mar - 03 Apr	LATAM Airlines Group
11 Mar - 01 Apr	LATAM Airlines Group

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

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 Ontario to Sao Paulo in March from $851

Return flights