This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $357 fare is the cheapest current round-trip from Seattle (SEA) to CLE on Frontier flight F92408, departing 2026-06-20 at 20:12 with return on 2026-06-21.

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