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

Return flights

14 Aug - 21 Aug	Avianca
23 Aug - 06 Sep	Avianca
21 Aug - 04 Sep	Avianca
19 Aug - 26 Aug	Avianca
26 Aug - 31 Aug	Avianca
10 Aug - 21 Aug	Avianca
07 Aug - 17 Aug	Avianca
05 Aug - 15 Aug	Avianca
14 Aug - 22 Aug	Avianca
07 Aug - 18 Aug	Avianca
15 Aug - 28 Aug	LATAM Airlines Group
27 Aug - 03 Sep	LATAM Airlines Group
11 Aug - 25 Aug	LATAM Airlines Group
29 Aug - 13 Sep	Volaris
29 Aug - 14 Sep	LATAM Airlines Group
30 Aug - 07 Sep	LATAM Airlines Group

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

Return flights