AirHint found the following cheapest return flights from Montreal (YUL) to Rio De Janeiro (GIG) in September 2025 (see full year).

Return flights

08 Sep - 23 Sep	Delta
19 Sep - 29 Sep	LATAM Airlines Group
06 Sep - 13 Sep	LATAM Airlines Group
01 Sep - 11 Sep	LATAM Airlines Group
15 Sep - 06 Oct	Avianca
17 Sep - 24 Sep	Avianca
10 Sep - 17 Sep	Avianca
14 Sep - 21 Sep	Avianca
22 Sep - 29 Sep	Avianca
10 Sep - 24 Sep	Avianca
29 Sep - 06 Oct	Avianca
24 Sep - 06 Oct	Avianca
17 Sep - 06 Oct	Avianca
03 Sep - 17 Sep	Avianca
24 Sep - 01 Oct	Avianca
26 Sep - 03 Oct	Avianca
28 Sep - 05 Oct	Avianca
10 Sep - 01 Oct	Avianca
17 Sep - 08 Oct	Avianca
26 Sep - 08 Oct	Avianca

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

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.

Book a cheap hotel in Rio De Janeiro

Cheap car rent in Rio De Janeiro

Cheapest return flights from Montreal to Rio De Janeiro in September from $494

Return flights