This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $428 fare is the cheapest current round-trip from Guadalajara (GDL) to OAK on Y4 flight Y41770, departing 2026-06-01 at 15:39 with return on 2026-06-08.

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