This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $397 fare is the cheapest current round-trip from Chicago (ORD) to CUN on Frontier flight F92112, departing 2026-07-30 at 20:52 with return on 2026-08-02.

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