CJU → NRTJeju City to Tokyo

live

Direct flights from Jeju City (CJU) to Tokyo (NRT): 5 nonstop departures observed each week across 1 airline. The median arrival is 9 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 31 October 2026 at 14:23 UTC.

CJU Jeju City busy · +20
NRT Tokyo smooth · +1
1,294 km · ~2h 10m est.
departs 11:155x weekly
Running clean · 1 airline · 5x weekly · nonstop
87 / 100

route health from live CJU and NRT delay boards

Median arrival delay is −9 min. 0 of 5 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−9 minacross the last 4 arrivals
Flight time~2h 10mestimated from route distance
Weekly departures5x1 direct airline on the leg

Who flies it

observed on the boards · 7 days
대한항공KE

Flights KE2125 varies Mo We Th Fr Su

History

operated legs · board outcomes
10-30KE2125dep +16 → arr−17
10-29KE2125dep +27 → arr+6
10-28KE2125dep +11 → arr−9
10-26KE2125dep +16 → arr−22
10-25KE2125departed+33

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
CJUJeju City +20 min busy Full CJU delay board →
NRTTokyo +1 min smooth 🌤 clear · 2 kt Full NRT delay board →

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
https://proflightsearch.com/search-flights/CJU-NRT
How we measure this →

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 87/100. 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 5 flights a week (sun, mon, wed, thu, 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.