AirHint found the following cheapest one-way flights from Chicago (ORD) to Lima (LIM) in August 2025 (see full year).

One-Way flights

16 Aug	Spirit Airlines
23 Aug	Spirit Airlines
10 Aug	Frontier Airlines
25 Aug	Frontier Airlines
15 Aug	Spirit Airlines
06 Aug	Spirit Airlines
07 Aug	Frontier Airlines
08 Aug	Copa
09 Aug	Spirit Airlines

Also check the deals for return flights from Chicago 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 one-way flights from Chicago to Lima in August from 185€

One-Way flights