This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $353 fare is the cheapest current round-trip from Austin (AUS) to BUF on Frontier flight F91859, departing 2026-09-04 at 20:15 with return on 2026-09-07.

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