대한항공KE60% on time
Flights KE2125 12:55 Mo We Fr Su
live
Direct flights from Jeju City (CJU) to Tokyo (NRT): 4 nonstop departures observed each week across 1 airline. 60% of the last 5 operated flights arrived within 15 minutes of schedule. The median arrival is 20 minutes early. No cancellations were recorded across the 5 tracked flights. The nonstop covers 1,294 km, an estimated 2 hours 10 minutes in the air. Measured by Pro Flight Search from live flight boards at Jeju City and Tokyo. Updated 11 September 2026 at 09:24 UTC.
CJU
Jeju City
busy · +21
NRT
Tokyo
smooth · +0
1,294 km · ~2h 10m est.
Runs mixed · 1 airline · 4x weekly · nonstop
60% on time
of the last 5 operated CJU → NRT flights arrived within 15 minutes
Median arrival delay is −20 min. 0 of 5 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−20 minacross the last 5 operated legs
Flight time~2h 10mestimated from route distance
Weekly departures4x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
대한항공
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 and NRT: 32% odds of a 15+ minute delay and around +1 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Jeju City to Tokyo route actually runs
Pro Flight Search records official board updates for nonstop CJU to NRT 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 — Jeju City (CJU) to Tokyo (NRT) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/CJU-NRT
CJU to NRT questions
Is CJU–NRT running on time right now?
Smooth skies ahead. The departure side at CJU is the weaker end, route health score 82/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from CJU to NRT?
Great-circle distance is 1,294 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 121–141 min gate-to-gate on this route.
How often does CJU–NRT fly?
대한항공 runs the route with about 4 flights a week (sun, mon, wed, fri). 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 CJU and arrival-side delay at NRT, 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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