AirHint found the following cheapest return flights from Washington (IAD) to Lima (LIM) in July 2025 (see full year).

Return flights

11 Jul - 15 Jul	Copa
18 Jul - 02 Aug	LATAM Airlines Group
26 Jul - 29 Jul	Copa
21 Jul - 29 Jul	Delta
10 Jul - 16 Jul	Copa
22 Jul - 29 Jul	Copa
14 Jul - 21 Jul	Copa
25 Jul - 28 Jul	Avianca
16 Jul - 23 Jul	LATAM Airlines Group
11 Jul - 17 Jul	Copa
11 Jul - 22 Jul	LATAM Airlines Group
30 Jul - 04 Aug	Avianca
31 Jul - 04 Aug	Copa
30 Jul - 03 Aug	Avianca

Also check the deals for one-way flights from Washington to Lima in July.

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 Washington to Lima in July from 408€

Return flights