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

Return flights

05 Dec - 20 Dec	Porter Airlines (Canada) Ltd
05 Dec - 18 Jan	Porter Airlines (Canada) Ltd
16 Dec - 07 Jan	WestJet
14 Dec - 07 Jan	WestJet
15 Dec - 07 Jan	WestJet
17 Dec - 08 Jan	Avianca
17 Dec - 09 Jan	Avianca
17 Dec - 10 Jan	Avianca
17 Dec - 07 Jan	Avianca
19 Dec - 31 Dec	Avianca
17 Dec - 06 Jan	Air Transat
18 Dec - 10 Jan	Avianca

Also check the deals for one-way flights from Toronto to Rio Negro in December.

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 December from $522

Return flights