Cheapest return flights from Boston to San Juan in August from $269

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 August 2025 (see full year).

Return flights

02 Aug - 28 Sep Delta direct
18 Aug - 22 Aug Spirit Airlines
29 Aug - 29 Sep Delta
12 Aug - 22 Aug Spirit Airlines
31 Aug - 07 Sep Delta direct
10 Aug - 13 Aug jetBlue direct
12 Aug - 22 Aug jetBlue direct
08 Aug - 15 Aug Spirit Airlines
15 Aug - 21 Aug jetBlue direct
18 Aug - 22 Aug jetBlue direct
13 Aug - 16 Aug Spirit Airlines
25 Aug - 31 Aug Delta direct
27 Aug - 31 Aug Delta direct
21 Aug - 02 Sep jetBlue
21 Aug - 02 Sep Delta direct
30 Aug - 01 Sep Delta direct
28 Aug - 01 Sep Spirit Airlines
28 Aug - 01 Sep Delta direct

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

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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