Korea's holiday-island hub on the world's busiest air route
Jeju International sits about 4 km west of central Jeju City on the north coast of Jeju Island. The Seoul Gimpo-Jeju shuttle is consistently among the world's busiest commercial routes by passenger volume, served by every major Korean carrier. Beyond domestic shuttles to GMP, PUS and TAE, CJU offers regional flights to Japan, China and Southeast Asia.
Major carriers: Korean Air, Asiana Airlines. Low-cost carriers: Jeju Air, T'way Air, Jin Air, Air Busan.
Flightmussy is a free, independent flight search for travellers anywhere in the world. No signup, no ads, no tracking — email is optional, only for route price alerts. Compare fares across every airline and see 12 months of prices at a glance, including the low-cost carriers Google Flights often buries. Book directly with the airline or a trusted partner — we never add a markup.
Flightmussy runs its own 12-month forward fare scans across thousands of routes worldwide and publishes the data openly. Read the cheapest month to fly almost anywhere → — a global study of when fares are lowest — or browse the cheapest destinations from a city: