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

Return flights

14 Jul - 29 Aug	Delta
12 Jul - 15 Jul	LATAM Airlines Group
17 Jul - 30 Jul	LATAM Airlines Group
16 Jul - 23 Jul	LATAM Airlines Group
22 Jul - 28 Jul	Avianca
24 Jul - 28 Jul	Avianca
29 Jul - 16 Aug	LATAM Airlines Group
25 Jul - 31 Jul	LATAM Airlines Group
30 Jul - 02 Aug	Avianca
30 Jul - 04 Aug	Avianca
24 Jul - 27 Jul	Avianca
30 Jul - 03 Aug	Avianca
31 Jul - 03 Aug	LATAM Airlines Group
19 Jul - 25 Jul	Avianca
19 Jul - 26 Jul	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 $443

Return flights