This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $172 fare is the cheapest current round-trip from Chicago (ORD) to PHX on Frontier flight F93171, departing 2026-10-21 at 11:06 with return on 2026-10-30.

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