This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $405 fare is the cheapest current round-trip from Detroit (DTW) to GDL on Frontier flight F92899, departing 2026-09-08 at 14:02 with return on 2026-09-16.

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