AirHint found the following cheapest return flights from Toronto (YYZ) to Rio De Janeiro (GIG) in October 2025 (see full year).

Return flights

28 Oct - 18 Nov	Avianca
08 Oct - 29 Oct	Copa
08 Oct - 21 Oct	Copa
29 Oct - 20 Nov	Copa
08 Oct - 13 Oct	Copa
08 Oct - 15 Oct	Copa
06 Oct - 16 Oct	Copa
28 Oct - 31 Oct	Avianca
07 Oct - 28 Oct	Copa
07 Oct - 24 Oct	Copa
08 Oct - 09 Oct	Copa
25 Oct - 29 Oct	GOL Linhas Aéreas
21 Oct - 13 Nov	Copa
17 Oct - 07 Nov	Copa
21 Oct - 08 Nov	GOL Linhas Aéreas
18 Oct - 08 Nov	Copa

Also check the deals for one-way flights from Toronto to Rio De Janeiro in October.

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 Toronto to Rio De Janeiro in October from $434

Return flights