Cheapest one-way flights from Boston to San Juan in June from 110€

Best time to book flights for Boston (BOS) to San Juan (SJU) flights at AirHint

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

One-Way flights

01 Jun Frontier Airlines direct
17 Jun Frontier Airlines direct
05 Jun Frontier Airlines direct
07 Jun Delta direct
26 Jun Frontier Airlines direct
19 Jun Frontier Airlines direct
06 Jun Delta direct
11 Jun Frontier Airlines
14 Jun Frontier Airlines
30 Jun Frontier Airlines

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

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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