This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $548 fare is the cheapest current round-trip from Austin (AUS) to SJD on Frontier flight F94683, departing 2026-10-22 at 22:24 with return on 2026-10-25.

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