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

Return flights

28 Aug - 28 Sep	Copa
26 Aug - 16 Sep	Copa
23 Aug - 08 Sep	Delta
27 Aug - 08 Sep	Copa
29 Aug - 06 Sep	LATAM Airlines Group
23 Aug - 06 Sep	LATAM Airlines Group
30 Aug - 06 Sep	LATAM Airlines Group
22 Aug - 27 Aug	LATAM Airlines Group
30 Aug - 05 Sep	LATAM Airlines Group
31 Aug - 20 Sep	LATAM Airlines Group
28 Aug - 05 Sep	Copa
25 Aug - 28 Aug	Copa
21 Aug - 28 Aug	Copa
26 Aug - 30 Aug	Copa
23 Aug - 28 Aug	Copa
19 Aug - 30 Aug	Avianca
19 Aug - 26 Aug	Avianca
23 Aug - 30 Aug	Avianca
20 Aug - 27 Aug	Avianca
21 Aug - 31 Aug	Copa

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

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 August from 418€

Return flights