This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $150 fare is the cheapest current round-trip from Chicago (ORD) to PHL on Frontier flight F92112, departing 2026-09-03 at 05:55 with return on 2026-09-05.

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