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

Return flights

18 Aug - 18 Aug	Delta
18 Aug - 22 Aug	Spirit Airlines
29 Aug - 06 Sep	Copa
12 Aug - 19 Aug	Spirit Airlines
12 Aug - 29 Aug	Spirit Airlines
19 Aug - 01 Sep	Spirit Airlines
23 Aug - 30 Aug	Spirit Airlines
09 Aug - 16 Aug	Copa
08 Aug - 17 Aug	Copa
07 Aug - 11 Aug	Avianca
01 Aug - 15 Aug	Spirit Airlines
01 Aug - 16 Aug	Spirit Airlines

Also check the deals for one-way 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 return flights from Chicago to Lima in August from $320

Return flights