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

Return flights

28 Sep - 08 Oct	Avianca
25 Sep - 07 Oct	Frontier Airlines
26 Sep - 15 Oct	Frontier Airlines
30 Sep - 08 Oct	Avianca
27 Sep - 04 Oct	Copa
27 Sep - 08 Oct	Copa
27 Sep - 09 Oct	Copa
29 Sep - 13 Oct	Frontier Airlines
19 Sep - 28 Sep	Avianca
22 Sep - 29 Sep	Avianca
28 Sep - 04 Oct	Copa
22 Sep - 07 Oct	Alaska Airlines
22 Sep - 30 Sep	Avianca
18 Sep - 28 Sep	Avianca
20 Sep - 27 Sep	Frontier Airlines
18 Sep - 25 Sep	Copa
18 Sep - 22 Sep	Copa
17 Sep - 20 Sep	Copa
15 Sep - 19 Sep	Copa
16 Sep - 19 Sep	Copa

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to Lima in September from 423€

Return flights