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

Return flights

23 Sep - 06 Oct	Copa
23 Sep - 30 Oct	Copa
17 Sep - 24 Sep	Copa
23 Sep - 27 Sep	Copa
23 Sep - 24 Oct	Copa
20 Sep - 30 Sep	Delta
17 Sep - 22 Sep	Delta
18 Sep - 22 Sep	Delta
25 Sep - 29 Sep	Delta
20 Sep - 17 Oct	Delta
30 Sep - 30 Oct	Delta
20 Sep - 26 Sep	LATAM Airlines Group
20 Sep - 27 Sep	LATAM Airlines Group
21 Sep - 22 Sep	LATAM Airlines Group
29 Sep - 06 Oct	LATAM Airlines Group
24 Sep - 01 Oct	LATAM Airlines Group
30 Sep - 29 Oct	LATAM Airlines Group
19 Sep - 24 Sep	LATAM Airlines Group
30 Sep - 13 Oct	LATAM Airlines Group
26 Sep - 03 Oct	LATAM Airlines Group

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 421€

Return flights