JL31 TokyoHND · 10:40 BangkokBKK · 15:10
JL31 by Japan Airlines flies from Tokyo (HND) to Bangkok (BKK) for the Fri, Sep 18 departure.
departs HND · on schedule
board checked 3m ago · checking again in 45s
⚖ JL31 typically leaves +11 and lands −10. The air wins minutes back.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 −10 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 BKK 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.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Tokyo to Bangkok flights today
same route · Japan AirlinesIf JL31 is cancelled, this is the other Japan Airlines nonstop flight from Tokyo to Bangkok on the same day, with scheduled departure times in HND local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How JL31 actually runs
Pro Flight Search has tracked every published board update for JL31 across the HND and BKK boards: schedule changes, gate pushes and actual clocks. Usually lands ~8 min late. Based on 14 confirmed landings · 11/14 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how JL31 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: JA736J, JA739J, JA741J, JA870J.
Board clocks recorded as HND and BKK published them.
Planning around JL31? 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 — JL31 Tokyo to Bangkok on-time performance, measured from the HND and BKK airport boards.
https://proflightsearch.com/flight/JL31
.