ZH9521 ShenzhenSZX · 15:00 ShanghaiPVG · 17:20
ZH9521 by Shenzhen Airlines flies from Shenzhen (SZX) to Shanghai (PVG) for the Mon, Sep 14 departure.
estimated arrival at PVG · local time · ~10h 55m from now
board checked 83m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 16:18.
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 −8 min · 0 cancelled · 14 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at SZX and PVG 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. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
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 Shenzhen to Shanghai flights today
same route · Shenzhen AirlinesIf ZH9521 is cancelled, these are the other Shenzhen Airlines nonstop flights from Shenzhen to Shanghai on the same day, with scheduled departure times in SZX local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How ZH9521 actually runs
Pro Flight Search has tracked every published board update for ZH9521 across the SZX and PVG boards: schedule changes, gate pushes and actual clocks. Usually lands ~8 min early. Based on 13 confirmed landings · 11/13 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 ZH9521 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-8078, B-1476, B-6781, B-6780.
Board clocks recorded as SZX and PVG published them.
Planning around ZH9521? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — ZH9521 Shenzhen to Shanghai on-time performance, measured from the SZX and PVG airport boards.
https://proflightsearch.com/flight/ZH9521
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