This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $448 fare is the cheapest current round-trip from Salt Lake City (SLC) to BOI on Frontier flight F92575, departing 2026-08-21 at 13:51 with return on 2026-08-23.

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