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

Return flights

08 Oct - 15 Oct	Avianca
24 Oct - 31 Oct	Arajet
21 Oct - 28 Oct	Porter Airlines (Canada) Ltd
05 Oct - 12 Oct	Avianca
28 Oct - 11 Nov	Air Transat
28 Oct - 04 Nov	Air Transat
31 Oct - 07 Nov	Arajet
17 Oct - 24 Oct	Arajet
06 Oct - 13 Oct	LATAM Airlines Group
22 Oct - 29 Oct	Air Transat
26 Oct - 02 Nov	Air Transat
07 Oct - 14 Oct	Porter Airlines (Canada) Ltd
19 Oct - 26 Oct	Air Transat
01 Oct - 08 Oct	LATAM Airlines Group
29 Oct - 05 Nov	Avianca
27 Oct - 03 Nov	Avianca
30 Oct - 06 Nov	Air Transat
28 Oct - 02 Nov	Air Transat
28 Oct - 03 Nov	Copa
25 Oct - 01 Nov	Air Canada

Also check the deals for one-way flights from Montreal 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 Montreal to Rio Negro in October from $446

Return flights