Cheapest return flights from Boston to San Juan in July from 268€

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 July 2025 (see full year).

Return flights

15 Jul - 22 Jul Frontier Airlines direct
29 Jul - 03 Aug Frontier Airlines direct
29 Jul - 07 Aug Frontier Airlines direct
21 Jul - 31 Jul United
05 Jul - 15 Jul jetBlue direct
24 Jul - 27 Jul Frontier Airlines direct
06 Jul - 13 Jul Frontier Airlines direct
04 Jul - 08 Jul Delta direct
17 Jul - 20 Jul Frontier Airlines direct
05 Jul - 13 Jul jetBlue direct
03 Jul - 13 Jul Frontier Airlines direct
04 Jul - 14 Jul jetBlue
31 Jul - 06 Aug Frontier Airlines
21 Jul - 03 Aug Frontier Airlines
28 Jul - 04 Aug Frontier Airlines
26 Jul - 02 Aug Frontier 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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