Cheapest one-way flights from San Juan to Boston in July from $73

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

One-Way flights

17 Jul Spirit Airlines direct
31 Jul Spirit Airlines direct
24 Jul Spirit Airlines direct
12 Jul Frontier Airlines
18 Jul jetBlue direct
23 Jul Delta direct
26 Jul jetBlue direct
29 Jul Spirit Airlines
14 Jul jetBlue direct
13 Jul jetBlue direct

Also check the deals for return flights from San Juan to Boston 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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