Cheapest return flights from Boston (BOS) to San Juan (SJU), July

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
28 Jul 04 Aug Frontier Airlines
22 Jul 29 Jul Frontier Airlines
22 Jul 30 Jul Delta
23 Jul 29 Jul Frontier Airlines
23 Jul 27 Jul Frontier Airlines
23 Jul 30 Jul Frontier Airlines
17 Jul 27 Jul Frontier Airlines
16 Jul 24 Jul Frontier Airlines
20 Jul 24 Jul Frontier Airlines
17 Jul 19 Jul Frontier Airlines
21 Jul 28 Jul Frontier Airlines
29 Jul 01 Aug Frontier Airlines
27 Jul 05 Aug Frontier Airlines
23 Jul 03 Aug Frontier Airlines
27 Jul 05 Aug Delta
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deals for one-way flights from Boston to San Juan in July.

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Updated Jul 3, 2026.

About these fares

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