Cheapest return flights from San Juan to Boston in May from $117

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

AirHint found the following cheapest return flights from San Juan (SJU) to Boston (BOS) in May 2025 (see full year).

Return flights

07 May - 12 May Frontier Airlines
08 May - 11 May Frontier Airlines direct
10 May - 13 May Frontier Airlines
13 May - 20 May Frontier Airlines
09 May - 11 May Frontier Airlines
15 May - 22 May Frontier Airlines direct
10 May - 13 May Delta direct
07 May - 12 May Delta direct
13 May - 20 May Delta direct
24 May - 26 May jetBlue direct

Also check the deals for one-way flights from San Juan to Boston in May.

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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