This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $231 fare is the cheapest current round-trip from Philadelphia (PHL) to HOU on Frontier flight F91003, departing 2026-09-05 at 16:35 with return on 2026-09-14.

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