This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $442 fare is the cheapest current round-trip from Sapporo (CTS) to ISG on GK flight GK984, departing 2026-06-28 at 17:20 with return on 2026-07-05.

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