This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $143 fare is the cheapest current round-trip from Houston (IAH) to ONT on Frontier flight F93131, departing 2026-08-17 at 06:10 with return on 2026-08-29.

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