AirHint found the following cheapest one-way flights from Washington (DCA) to Lima (LIM) in October 2025 (see full year).

One-Way flights

07 Oct	United
23 Oct	LATAM Airlines Group
24 Oct	LATAM Airlines Group
27 Oct	LATAM Airlines Group
28 Oct	LATAM Airlines Group
20 Oct	LATAM Airlines Group
13 Oct	LATAM Airlines Group
21 Oct	LATAM Airlines Group
22 Oct	LATAM Airlines Group
25 Oct	LATAM Airlines Group

Also check the deals for return flights from Washington 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.

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Cheapest one-way flights from Washington to Lima in October from $184

One-Way flights