Cheapest one-way flights from Boston to San Juan in August from 77€

AirHint found the following cheapest one-way flights from Boston (BOS) to San Juan (SJU) in August 2026 (see full year).

One-Way flights

29 Aug Spirit Airlines direct
30 Aug Spirit Airlines direct
25 Aug Spirit Airlines direct
28 Aug Spirit Airlines direct
19 Aug Spirit Airlines
21 Aug Spirit Airlines direct
22 Aug Spirit Airlines
01 Aug Spirit Airlines
09 Aug Spirit Airlines
03 Aug Spirit Airlines

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

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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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