GK128 SapporoCTS · 12:15 TokyoNRT · 13:55
GK128 by Jetstar Japan flies from Sapporo (CTS) to Tokyo (NRT) for the Thu, Oct 22 departure.
departs CTS · 400 min late
board checked 17m ago · checking again in 45s
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 +11 min · 0 cancelled · 12 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at CTS and NRT 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 Sapporo to Tokyo flights today
same route · Jetstar JapanIf GK128 is cancelled, these are the other Jetstar Japan nonstop flights from Sapporo to Tokyo on the same day, with scheduled departure times in CTS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How GK128 actually runs
Pro Flight Search has tracked every published board update for GK128 across the CTS and NRT boards: schedule changes, gate pushes and actual clocks. Usually lands ~11 min late. Based on 11 confirmed landings · 9/11 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how GK128 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: JA15JJ, JA21JJ, JA24JJ, JA11JJ.
Board clocks recorded as CTS and NRT published them.
Planning around GK128? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — GK128 Sapporo to Tokyo on-time performance, measured from the CTS and NRT airport boards.
https://proflightsearch.com/flight/GK128
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