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

Return flights

04 Dec - 11 Dec	Air Transat
11 Dec - 18 Dec	Air Transat
02 Dec - 09 Dec	United
08 Dec - 15 Dec	United
01 Dec - 09 Dec	Copa
06 Dec - 13 Dec	United
05 Dec - 12 Dec	Air Transat
01 Dec - 08 Dec	Air Transat
09 Dec - 16 Dec	United
10 Dec - 17 Dec	Avianca
20 Dec - 09 Jan	Air Transat
26 Dec - 02 Jan	Air Transat
30 Dec - 06 Jan	Avianca
24 Dec - 08 Jan	Arajet
29 Dec - 05 Jan	Air Transat
31 Dec - 07 Jan	Avianca
26 Dec - 03 Jan	Avianca
28 Dec - 04 Jan	Avianca
27 Dec - 03 Jan	Air Canada
19 Dec - 05 Jan	Avianca

Also check the deals for one-way flights from Montreal 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 Montreal to Rio Negro in December from $531

Return flights