UO857 TokyoNRT · 08:00 Hong KongHKG · 11:55
UO857 by HK Express flies from Tokyo (NRT) to Hong Kong (HKG) for the Sun, Sep 13 departure.
today's NRT → HKG operation will not depart
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 −22 min · 6 cancelled · 12 operations tracked
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by HKG (Hong Kong), currently flying VFR (visual). 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 Hong Kong flights today
same route · HK ExpressIf UO857 is cancelled, these are the other HK Express nonstop flights from Tokyo to Hong Kong on the same day, with scheduled departure times in NRT local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UO857 actually runs
Pro Flight Search has tracked every published board update for UO857 across the NRT and HKG boards: schedule changes, gate pushes and actual clocks. Usually lands ~22 min early. Based on 6 confirmed landings · 6/6 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 UO857 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-KKO, B-KKP, B-KKL, B-KKI.
Board clocks recorded as NRT and HKG published them.
Planning around UO857? 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 — UO857 Tokyo to Hong Kong on-time performance, measured from the NRT and HKG airport boards.
https://proflightsearch.com/flight/UO857
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