GK423 TokyoNRT · 12:15 KochiKCZ · 14:05
GK423 by Jetstar Japan flies from Tokyo (NRT) to Kochi (KCZ) for the Wed, Oct 28 departure.
estimated arrival at KCZ · local time · past this estimate · waiting on the board
board checked 102m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 12:23 · typical taxi-out at NRT ≈ 8.4 min.
Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operation0 cancelled · 13 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at NRT and KCZ are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
Tomorrow on this route
ForecastTokyo to Kochi with Jetstar Japan · Thu 29 Oct, local date
- Chance a departure is cancelled
- 0.7%1.5× usual
- Chance a departure leaves 60+ min late
- 2.1%0.9× usual
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 1 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How GK423 actually runs
Pro Flight Search has tracked every published board update for GK423 across the NRT and KCZ boards: schedule changes, gate pushes and actual clocks. Usually departs ~7 min late. Based on 13 confirmed departures · 10/13 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how GK423 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: JA24JJ, JA09JJ, JA14JJ, JA02JJ.
Board clocks recorded as NRT and KCZ published them.
Planning around GK423? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — GK423 Tokyo to Kochi on-time performance, measured from the NRT and KCZ airport boards.
https://proflightsearch.com/flight/GK423
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