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

Return flights

09 Sep - 18 Sep	Avianca
11 Sep - 20 Sep	Avianca
10 Sep - 24 Sep	LATAM Airlines Group
17 Sep - 24 Sep	LATAM Airlines Group
19 Sep - 28 Sep	LATAM Airlines Group
24 Sep - 06 Oct	LATAM Airlines Group
17 Sep - 23 Sep	LATAM Airlines Group

Also check the deals for one-way flights from Ontario 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 Ontario to Lima in September from $599

Return flights