This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $637 fare is the cheapest current round-trip from Charlotte (CLT) to UIO on Frontier flight F91445, departing 2026-08-11 at 12:24 with return on 2026-08-25.

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