Cheapest return flights from Boston to San Juan in October from $217

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

Return flights

01 Oct - 03 Oct Spirit Airlines
01 Oct - 08 Oct Spirit Airlines
01 Oct - 07 Oct Spirit Airlines
01 Oct - 21 Oct Spirit Airlines
01 Oct - 22 Oct Spirit Airlines
01 Oct - 14 Oct Spirit Airlines
01 Oct - 02 Oct Spirit Airlines
01 Oct - 06 Oct Spirit Airlines
01 Oct - 16 Oct Spirit Airlines
02 Oct - 03 Oct Spirit Airlines
22 Oct - 05 Nov Spirit Airlines
22 Oct - 01 Nov Spirit Airlines
22 Oct - 12 Nov Spirit Airlines
25 Oct - 05 Nov Spirit Airlines
25 Oct - 13 Nov Spirit Airlines
25 Oct - 14 Nov Spirit Airlines
25 Oct - 12 Nov Spirit Airlines
25 Oct - 15 Nov Spirit Airlines
25 Oct - 01 Nov Spirit Airlines
14 Oct - 01 Nov Spirit Airlines

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

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Feel free to contact us with any feedback or request another flight research.