This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $593 fare is the cheapest current round-trip from Austin (AUS) to GUA on Frontier flight F94524, departing 2026-06-20 at 17:42 with return on 2026-06-30.

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