Cheapest return flights from Boston to San Juan in August from $190

AirHint found the following cheapest return flights from Boston (BOS) to San Juan (SJU) in August 2026 (see full year).

Return flights

12 Aug - 18 Aug Spirit Airlines direct
19 Aug - 25 Aug Spirit Airlines direct
12 Aug - 28 Aug Spirit Airlines direct
12 Aug - 29 Aug Spirit Airlines direct
12 Aug - 25 Aug Spirit Airlines direct
05 Aug - 18 Aug Spirit Airlines direct
05 Aug - 25 Aug Spirit Airlines direct
11 Aug - 28 Aug Spirit Airlines direct
11 Aug - 29 Aug Spirit Airlines direct
11 Aug - 18 Aug Spirit Airlines direct
29 Aug - 05 Sep Spirit Airlines direct
19 Aug - 05 Sep Spirit Airlines direct
28 Aug - 05 Sep Spirit Airlines direct
21 Aug - 05 Sep Spirit Airlines direct
16 Aug - 05 Sep Spirit Airlines direct

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

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