This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $258 fare is the cheapest current round-trip from Newark (EWR) to STI on Spirit flight NK1430, departing 2026-05-08 at 19:55 with return on 2026-05-29.

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