This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $398 fare is the cheapest current round-trip from Guadalajara (GDL) to SEA on Y4 flight Y45852, departing 2026-07-23 at 07:00 with return on 2026-08-20.

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