AirHint found the following cheapest return flights from Montreal (YUL) to Lima (LIM) in September 2025 (see full year).

Return flights

29 Sep - 06 Oct	Avianca
18 Sep - 25 Sep	Copa
11 Sep - 18 Sep	Copa
03 Sep - 11 Sep	Copa
02 Sep - 17 Sep	Copa
09 Sep - 19 Sep	Copa
05 Sep - 11 Sep	Copa
05 Sep - 12 Sep	Copa
21 Sep - 28 Sep	Copa
23 Sep - 24 Oct	Copa
16 Sep - 23 Sep	Copa
01 Sep - 16 Sep	Copa
24 Sep - 01 Oct	LATAM Airlines Group
26 Sep - 03 Oct	LATAM Airlines Group
25 Sep - 02 Oct	LATAM Airlines Group
30 Sep - 29 Oct	Delta
30 Sep - 07 Oct	Delta
08 Sep - 08 Oct	Copa
12 Sep - 05 Oct	Copa
26 Sep - 05 Oct	Copa

Also check the deals for one-way flights from Montreal to Lima 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.

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Cheapest return flights from Montreal to Lima in September from 404€

Return flights