This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $623 fare is the cheapest current round-trip from Houston (IAH) to TYO on ZG flight ZG15, departing 2026-05-01 at 10:25 with return on 2026-05-15.

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