Cheapest return flights from Boston to San Juan in May from 119€

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

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

Return flights

03 May - 07 May Spirit Airlines
06 May - 13 May Spirit Airlines
07 May - 14 May Spirit Airlines
06 May - 20 May Spirit Airlines
03 May - 09 May Spirit Airlines
04 May - 10 May Spirit Airlines
03 May - 30 May United
03 May - 23 May United
06 May - 29 May United
03 May - 07 May Delta direct
13 May - 08 Jun United
20 May - 03 Jun United
20 May - 10 Jun United
27 May - 21 Jun United
28 May - 14 Jun United
20 May - 17 Jun United
21 May - 01 Jun United
21 May - 05 Jun United
21 May - 04 Jun United
27 May - 17 Jun United

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