CX509 TokyoNRT · 08:50 Hong KongHKG · 13:25
CX509 by Cathay Pacific flies from Tokyo (NRT) to Hong Kong (HKG) for the Sat, Oct 31 departure.
arrival expected at HKG · on schedule
board checked 4m ago · checking again in 45s
⚖ CX509 typically leaves +25 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 · 1 cancelled · 13 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at NRT and HKG 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 Hong Kong with Cathay Pacific · Sun 1 Nov, local date
- Chance a departure is cancelled
- 0.7%0.7× usual
- Chance a departure leaves 60+ min late
- 4.2%0.9× usual
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 5 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 Hong Kong flights today
same route · Cathay PacificIf CX509 is cancelled, these are the other Cathay Pacific nonstop flights from Tokyo to Hong Kong 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 CX509 actually runs
Pro Flight Search has tracked every published board update for CX509 across the NRT and HKG boards: schedule changes, gate pushes and actual clocks. Usually lands ~11 min early. Based on 12 confirmed landings · 11/12 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how CX509 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: B-LAZ, B-LAO, B-LBA, B-HLR.
Board clocks recorded as NRT and HKG published them.
Planning around CX509? 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: CX509 Tokyo to Hong Kong on-time performance, measured from the NRT and HKG airport boards.
https://proflightsearch.com/flight/CX509
.