AirHint found the following cheapest return flights from Boston (BOS) to Lima (LIM) in August 2026 (see full year).

Return flights

23 Aug - 02 Sep	Copa
23 Aug - 08 Sep	Copa
31 Aug - 16 Sep	Copa
04 Aug - 17 Aug	Spirit Airlines
07 Aug - 17 Aug	Delta
04 Aug - 16 Aug	Spirit Airlines
04 Aug - 15 Aug	Spirit Airlines
09 Aug - 17 Aug	Spirit Airlines
01 Aug - 17 Aug	Spirit Airlines
09 Aug - 15 Aug	Spirit Airlines
01 Aug - 15 Aug	Spirit Airlines
07 Aug - 15 Aug	Spirit Airlines
09 Aug - 16 Aug	Spirit Airlines

Also check the deals for one-way flights from Boston to Lima in August.

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.

Book a cheap hotel in Lima

Cheap car rent in Lima

Cheapest return flights from Boston to Lima in August from $513

Return flights