This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $375 fare is the cheapest current round-trip from Detroit (DTW) to SEA on Frontier flight F93565, departing 2026-06-01 at 07:55 with return on 2026-06-13.

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