This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $347 fare is the cheapest current round-trip from Boston (BOS) to STI on American Airlines flight AA1259, departing 2026-06-06 at 08:00 with return on 2026-06-15.

Clicking "Book this flight" opens Kiwi.com with this exact flight pre-filtered — same airline, same dates, same passenger count.