OZ8921 SeoulGMP · 08:20 Jeju CityCJU · 09:35
OZ8921 by Asiana Airlines flies from Seoul (GMP) to Jeju City (CJU) for the Tue, Aug 18 departure.
departs GMP · on schedule
board checked 4m ago · checking again in 45s
⚖ OZ8921 typically leaves +15 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 · 0 cancelled · 15 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at GMP and CJU 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 Seoul to Jeju City flights today
same route · Asiana AirlinesIf OZ8921 is cancelled, these are the other Asiana Airlines nonstop flights from Seoul to Jeju City on the same day, with scheduled departure times in GMP local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How OZ8921 actually runs
Pro Flight Search has tracked every published board update for OZ8921 across the GMP and CJU boards: schedule changes, gate pushes and actual clocks. Usually lands ~10 min early. Based on 13 confirmed landings · 13/13 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 OZ8921 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as GMP and CJU published them.
Planning around OZ8921? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — OZ8921 Seoul to Jeju City on-time performance, measured from the GMP and CJU airport boards.
https://proflightsearch.com/flight/OZ8921
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