Cheapest return flights from Boston to San Juan in June from $188

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

Return flights

29 Jun - 05 Jul Frontier Airlines
29 Jun - 02 Jul Frontier Airlines
29 Jun - 03 Jul Frontier Airlines
27 Jun - 10 Jul Frontier Airlines
30 Jun - 03 Jul Frontier Airlines
28 Jun - 03 Jul Frontier Airlines
26 Jun - 02 Jul Frontier Airlines
28 Jun - 05 Jul Frontier Airlines
26 Jun - 28 Jun Frontier Airlines
26 Jun - 29 Jun Frontier Airlines
29 Jun - 17 Jul Spirit Airlines direct
28 Jun - 17 Jul Spirit Airlines
27 Jun - 30 Jun Frontier Airlines
27 Jun - 29 Jun Frontier Airlines
28 Jun - 29 Jun Spirit Airlines
27 Jun - 29 Jun jetBlue direct
26 Jun - 29 Jun jetBlue direct
27 Jun - 30 Jun jetBlue direct
28 Jun - 30 Jun jetBlue direct
27 Jun - 28 Jun Spirit Airlines

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

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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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