Cheapest return flights from Boston to San Juan in July from $156

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

Return flights

27 Jul - 31 Jul Spirit Airlines direct
14 Jul - 17 Jul Frontier Airlines
13 Jul - 17 Jul Frontier Airlines
27 Jul - 07 Aug Spirit Airlines
01 Jul - 09 Jul Frontier Airlines
04 Jul - 08 Jul Frontier Airlines
04 Jul - 09 Jul Frontier Airlines
08 Jul - 16 Jul Frontier Airlines
10 Jul - 16 Jul Frontier Airlines
31 Jul - 07 Aug Frontier Airlines
14 Jul - 31 Jul Spirit Airlines
19 Jul - 31 Jul Spirit Airlines
27 Jul - 02 Aug Spirit Airlines
27 Jul - 08 Aug Spirit Airlines
27 Jul - 07 Aug Spirit Airlines direct
14 Jul - 02 Aug Spirit Airlines
19 Jul - 07 Aug Spirit Airlines
19 Jul - 02 Aug Spirit Airlines
19 Jul - 08 Aug Spirit Airlines
18 Jul - 07 Aug Spirit Airlines

Also check the deals for one-way flights from Boston to San Juan in July.

Skyscanner

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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