LJ512 Jeju CityCJU · 21:15 SeoulGMP · 22:30
LJ512 by Jin Air flies from Jeju City (CJU) to Seoul (GMP) for the Tue, Sep 8 departure.
departs CJU · on schedule
board checked 17m ago · checking again in 45s
⚖ LJ512 typically leaves +20 and lands −4. 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 −4 min · 0 cancelled · 14 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at CJU and GMP 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 Jeju City to Seoul flights today
same route · Jin AirIf LJ512 is cancelled, these are the other Jin Air nonstop flights from Jeju City to Seoul on the same day, with scheduled departure times in CJU local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How LJ512 actually runs
Pro Flight Search has tracked every published board update for LJ512 across the CJU and GMP boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 13 confirmed landings · 12/13 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 LJ512 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 CJU and GMP published them.
Planning around LJ512? 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 — LJ512 Jeju City to Seoul on-time performance, measured from the CJU and GMP airport boards.
https://proflightsearch.com/flight/LJ512
.