This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $223 fare is the cheapest current round-trip from Denver (DEN) to GRR on Frontier flight F91248, departing 2026-05-29 at 15:07 with return on 2026-06-03.

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