Jeju International Airport (CJU) August 2025 Operational Report

Flight Activity Overview

Total Departing Flights: 7,804

Year-over-Year Change in Departing Flights: +1.63%

In August 2025, Jeju International Airport handled 7,804 departing flights, a +1.63% change from last year. The summer leisure market and capacity adjustments on trunk routes kept schedules dense while airlines prioritized peak periods.

On-Time Performance and Cancellations

Departure On-Time Performance: 76.35%

Year-over-Year Change in On-Time Performance: -1.39 percentage points

Cancelled Flights: 9

Year-over-Year Change in Cancellations: -68.97%

Departure punctuality at Jeju International Airport was 76.35%, with a change of -1.39 percentage points versus last year; only 9 departures were cancelled (-68.97%). Late‑summer convection and air traffic flow programs occasionally slowed afternoon banks, so travelers faced sporadic queues.

Airlines Serving Jeju International Airport

At Jeju International Airport, service is led by Korean Air, Asiana Airlines and high‑frequency low‑cost carriers such as Jeju Air, Jin Air, T’way Air and Air Busan. The network is dominated by dense domestic links to Seoul Gimpo and Incheon, with seasonal international services to nearby Northeast Asia markets.

Outlook

Over the next 4–8 weeks, schedules at Jeju International Airport should remain broadly steady and departure on‑time performance near current levels; late‑day convection and weekend peaks remain the main risk windows. Passengers should favor morning departures, allow 60–90 minutes of buffer for security and connections during busy periods, and monitor real‑time gate and weather notifications via the NextFly App.