This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $155 fare is the cheapest current round-trip from Newark (EWR) to CHI on Frontier flight F91659, departing 2026-09-13 at 05:55 with return on 2026-09-23.

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