GK121 TokyoNRT · 07:50 SapporoCTS · 09:35
GK121 by Jetstar Japan flies from Tokyo (NRT) to Sapporo (CTS) for the Mon, Nov 2 departure.
departs NRT · on schedule
board checked 45m ago · checking again in 45s
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at NRT and CTS 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 Sapporo with Jetstar Japan · Tue 3 Nov, local date
- Chance a departure is cancelled
- 1.1%0.9× usual
- Chance a departure leaves 60+ min late
- 1.8%0.9× usual
Forecast weather: 27% chance of snow and 74% chance of rain at Sapporo
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 7 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 Sapporo flights today
same route · Jetstar JapanIf GK121 is cancelled, these are the other Jetstar Japan nonstop flights from Tokyo to Sapporo on the same day, with scheduled departure times in NRT 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 GK121 actually runs
Pro Flight Search has tracked every published board update for GK121 across the NRT and CTS boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 3 completed legs so far: landed +6 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how GK121 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: JA05JJ, JA14JJ, JA02JJ.
Board clocks recorded as NRT and CTS published them.
Planning around GK121? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search: GK121 Tokyo to Sapporo on-time performance, measured from the NRT and CTS airport boards.
https://proflightsearch.com/flight/GK121
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