This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $450 fare is the cheapest current round-trip from Atlanta (ATL) to SAN on Frontier flight F91447, departing 2026-06-09 at 17:21 with return on 2026-06-12.

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