Cheapest return flights from San Juan to Boston in September from $196

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

Return flights

17 Sep - 18 Sep Spirit Airlines
17 Sep - 28 Sep Spirit Airlines
17 Sep - 01 Oct Spirit Airlines
18 Sep - 22 Sep Spirit Airlines
19 Sep - 22 Sep Spirit Airlines
19 Sep - 22 Sep Delta direct
18 Sep - 22 Sep jetBlue direct
04 Sep - 07 Sep jetBlue direct
02 Sep - 02 Sep Spirit Airlines
02 Sep - 18 Sep Spirit Airlines
02 Sep - 15 Sep Spirit Airlines
20 Sep - 01 Oct Spirit Airlines
27 Sep - 17 Oct Spirit Airlines
27 Sep - 01 Oct Spirit Airlines
30 Sep - 17 Oct Spirit Airlines
30 Sep - 01 Oct Spirit Airlines
21 Sep - 01 Oct Spirit Airlines
18 Sep - 01 Oct Spirit Airlines
14 Sep - 01 Oct Spirit Airlines
15 Sep - 01 Oct Spirit Airlines

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

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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