This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $718 fare is the cheapest current round-trip from Philadelphia (PHL) to STI on American Airlines flight AA2005, departing 2026-08-16 at 08:30 with return on 2026-08-19.

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