JL631 TokyoHND · 12:55 KumamotoKMJ · 14:45
JL631 by Japan Airlines flies from Tokyo (HND) to Kumamoto (KMJ) for the Fri, Oct 30 departure.
arrived at KMJ · 10 min late
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 operationmedian arrival +15 min · 0 cancelled · 15 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at HND and KMJ are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
Tomorrow on this route
ForecastTokyo to Kumamoto with Japan Airlines · Sat 31 Oct, local date
- Chance a departure is cancelled
- 0.9%0.7× usual
- Chance a departure leaves 60+ min late
- 1.4%1.2× usual
Forecast weather: 31% chance of fog at Kumamoto
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 8 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.
Other Tokyo to Kumamoto flights today
same route · Japan AirlinesIf JL631 is cancelled, these are the other Japan Airlines nonstop flights from Tokyo to Kumamoto on the same day, with scheduled departure times in HND local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →
How JL631 actually runs
Pro Flight Search has tracked every published board update for JL631 across the HND and KMJ boards: schedule changes, gate pushes and actual clocks. Usually lands ~18 min late. Based on 14 confirmed landings · 7/14 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how JL631 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as HND and KMJ published them.
Planning around JL631? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search: JL631 Tokyo to Kumamoto on-time performance, measured from the HND and KMJ airport boards.
https://proflightsearch.com/flight/JL631
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