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

Return flights

23 Oct - 28 Oct	Copa
03 Oct - 27 Oct	Copa
28 Oct - 04 Nov	Copa
29 Oct - 11 Nov	Copa
29 Oct - 02 Nov	Copa
28 Oct - 02 Nov	Copa
03 Oct - 18 Oct	Frontier Airlines
15 Oct - 21 Oct	Frontier Airlines
16 Oct - 24 Oct	Spirit Airlines
01 Oct - 08 Oct	Spirit Airlines
15 Oct - 20 Oct	Frontier Airlines
17 Oct - 04 Nov	Spirit Airlines
09 Oct - 13 Oct	Spirit Airlines
17 Oct - 03 Nov	Spirit Airlines

Also check the deals for one-way flights from Chicago to Lima in October.

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.

Book a cheap hotel in Lima

Cheap car rent in Lima

Cheapest return flights from Chicago to Lima in October from 361€

Return flights