Jeju Air7C
Flights 7C167 18:05 Mo Fr Sa
live
Direct flights from Seoul (ICN) to Jeju City (CJU): 3 nonstop departures observed each week across 1 airline. The median arrival is 21 minutes late. No cancellations were recorded across the 2 tracked flights. The nonstop covers 439 km, an estimated 1 hour 4 minutes in the air. Measured by Pro Flight Search from live flight boards at Seoul and Jeju City. Updated 22 September 2026 at 03:25 UTC.
ICN
Seoul
busy · +22
CJU
Jeju City
smooth · +0
439 km · ~1h 04m est.
Running clean · 1 airline · 3x weekly · nonstop
85 / 100
route health from live ICN and CJU delay boards
Median arrival delay is +21 min. 0 of 2 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+21 minacross the last 2 operated legs
Flight time~1h 04mestimated from route distance
Weekly departures3x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Jeju Air
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at CJU: 26% odds of a 15+ minute delay, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Seoul to Jeju City route actually runs
Pro Flight Search records official board updates for nonstop ICN to CJU flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Seoul (ICN) to Jeju City (CJU) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/ICN-CJU
ICN to CJU questions
Is ICN–CJU running on time right now?
Smooth skies ahead. The departure side at ICN is the weaker end, route health score 85/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from ICN to CJU?
Great-circle distance is 439 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 61–68 min gate-to-gate on this route.
How often does ICN–CJU fly?
Jeju Air runs the route with about 3 flights a week (mon, fri, sat). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at ICN and arrival-side delay at CJU, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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