This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $83 fare is the cheapest current round-trip from Las Vegas (LAS) to ONT on Frontier flight F92231, departing 2026-08-21 at 18:40 with return on 2026-08-23.

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