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

Return flights

19 Oct - 25 Oct	WestJet
07 Oct - 17 Oct	WestJet
22 Oct - 05 Nov	Flair Airlines
03 Oct - 15 Oct	Porter Airlines (Canada) Ltd
28 Oct - 18 Nov	WestJet
03 Oct - 10 Oct	Porter Airlines (Canada) Ltd
05 Oct - 25 Oct	Flair Airlines
02 Oct - 15 Oct	WestJet
22 Oct - 29 Oct	Flair Airlines
02 Oct - 16 Oct	WestJet
29 Oct - 03 Nov	WestJet
01 Oct - 15 Oct	Porter Airlines (Canada) Ltd
23 Oct - 13 Nov	WestJet
23 Oct - 01 Nov	WestJet
16 Oct - 23 Oct	WestJet
31 Oct - 03 Nov	Flair Airlines
30 Oct - 04 Nov	WestJet
29 Oct - 02 Nov	WestJet
30 Oct - 02 Nov	WestJet

Also check the deals for one-way flights from Toronto to Rio Negro 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 Negro in October from $342

Return flights