Cheapest one-way flights from Boston to San Juan in June from 105€

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

One-Way flights

09 Jun Spirit Airlines
15 Jun Spirit Airlines
28 Jun Frontier Airlines
13 Jun Spirit Airlines
17 Jun Spirit Airlines
06 Jun Spirit Airlines
06 Jun Delta direct
12 Jun Spirit Airlines
27 Jun Frontier Airlines
29 Jun Spirit Airlines

Also check the deals for return 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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