LJ509 SeoulGMP · 12:45 Jeju CityCJU · 14:00
LJ509 by Jin Air flies from Seoul (GMP) to Jeju City (CJU).
scheduled from GMP
⚖ LJ509 typically leaves +38 and lands +26. 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 +26 min · 0 cancelled · 16 operations tracked
The route today
live boardsWhen 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 · Jin AirIf LJ509 is cancelled, these are the other Jin Air 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 LJ509 actually runs
Pro Flight Search has tracked every published board update for LJ509 across the GMP and CJU boards: schedule changes, gate pushes and actual clocks. Usually lands ~30 min late. Based on 14 confirmed landings · 4/14 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 LJ509 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 LJ509? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — LJ509 Seoul to Jeju City on-time performance, measured from the GMP and CJU airport boards.
https://proflightsearch.com/flight/LJ509
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