AirHint found the following cheapest return flights from Chicago (MDW) to Lima (LIM) in October 2025 (see full year).
Return flights
| 24 Oct - 31 Oct | Delta | ||
| 23 Oct - 29 Oct | Delta | ||
| 22 Oct - 25 Oct | LATAM Airlines Group | ||
| 18 Oct - 23 Oct | Delta |
Also check the deals for one-way flights from Chicago to Lima in October.
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