Cheapest one-way flights from Ontario to Sao Paulo in December from $293

AirHint found the following cheapest one-way flights from Ontario (ONT) to Sao Paulo (GRU) in December 2025 (see full year).

One-Way flights

01 Dec Frontier Airlines
08 Dec Frontier Airlines
04 Dec Frontier Airlines
12 Dec Frontier Airlines
15 Dec Frontier Airlines
11 Dec Frontier Airlines
02 Dec Volaris
07 Dec Frontier Airlines
31 Dec Volaris
24 Dec Volaris

Also check the deals for return flights from Ontario to Sao Paulo in December.

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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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