This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $544 fare is the cheapest current round-trip from Philadelphia (PHL) to STI on JetBlue flight B6375, departing 2026-06-28 at 07:00 with return on 2026-07-30. Total flight time is not specified, with 1 stop routing.

Clicking "Book this flight" opens Kiwi.com with this exact flight pre-filtered — same airline, same dates, same passenger count. Kiwi aggregates availability across the major GDSs and low-cost carrier inventories, and confirmation is instant once payment clears. Free cancellation typically available within 24 hours under most airline policies.

Prices on this route historically range $462–$925 depending on season, day of week, and booking lead time.