AirHint found the following cheapest return flights from Washington (IAD) to Lima (LIM) in October 2025 (see full year).
Return flights
| 29 Oct - 05 Nov | Avianca | ||
| 27 Oct - 03 Nov | Avianca | ||
| 25 Oct - 05 Nov | Avianca | ||
| 26 Oct - 02 Nov | Avianca | ||
| 23 Oct - 26 Oct | Copa |
Also check the deals for one-way flights from Washington to Lima in October.
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