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

Return flights

15 Jul - 05 Aug	Spirit Airlines
16 Jul - 30 Jul	Spirit Airlines
15 Jul - 30 Jul	Spirit Airlines
08 Jul - 31 Jul	Delta
24 Jul - 28 Jul	Spirit Airlines
26 Jul - 14 Aug	Spirit Airlines
22 Jul - 04 Aug	Copa
15 Jul - 29 Jul	Spirit Airlines
01 Jul - 08 Jul	Copa
08 Jul - 15 Jul	LATAM Airlines Group
08 Jul - 17 Jul	jetBlue
17 Jul - 02 Aug	Avianca
05 Jul - 01 Aug	Spirit Airlines
27 Jul - 02 Aug	Spirit Airlines
03 Jul - 25 Jul	LATAM Airlines Group

Also check the deals for one-way flights from Boston 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 Boston to Lima in July from $551

Return flights