Cheapest return flights from Boston to San Juan in June from 244€

Best time to book flights for Boston (BOS) to San Juan (SJU) flights at AirHint

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

Return flights

10 Jun - 17 Jun Frontier Airlines direct
03 Jun - 08 Jun Frontier Airlines direct
01 Jun - 15 Jun Frontier Airlines direct
01 Jun - 05 Jun Frontier Airlines direct
05 Jun - 15 Jun Frontier Airlines direct
05 Jun - 10 Jun Frontier Airlines direct
01 Jun - 22 Jun Frontier Airlines direct
02 Jun - 09 Jun Delta direct
22 Jun - 29 Jun Frontier Airlines direct
19 Jun - 22 Jun Frontier Airlines direct
29 Jun - 05 Jul Frontier Airlines
24 Jun - 05 Jul Frontier Airlines
23 Jun - 01 Jul Frontier Airlines
28 Jun - 01 Jul United
25 Jun - 17 Jul Frontier Airlines
25 Jun - 03 Jul Frontier Airlines
28 Jun - 01 Jul Delta direct
27 Jun - 10 Jul Frontier Airlines
30 Jun - 05 Jul Frontier Airlines
27 Jun - 20 Jul Frontier 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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