This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $350 fare is the cheapest current round-trip from San Jose (SJC) to SAT on Frontier flight F91590, departing 2026-06-25 at 14:12 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.