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

Return flights

13 May - 03 Jun	Copa
16 May - 23 May	Copa
15 May - 20 May	Copa
13 May - 06 Jun	Copa
13 May - 05 Jun	Copa
13 May - 07 Jun	Copa
16 May - 18 May	Spirit Airlines
13 May - 18 May	Spirit Airlines
15 May - 18 May	Spirit Airlines
16 May - 20 May	Spirit Airlines
13 May - 20 May	Spirit Airlines
16 May - 03 Jun	Spirit Airlines
16 May - 05 Jun	Spirit Airlines
15 May - 03 Jun	Spirit Airlines
29 May - 03 Jun	Spirit Airlines
29 May - 05 Jun	Spirit Airlines
13 May - 23 May	Spirit Airlines
29 May - 18 Jun	Spirit Airlines
13 May - 13 May	United

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

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 May from 415€

Return flights