LJ520 Jeju CityCJU · 07:00 SeoulGMP · 08:15
LJ520 by Jin Air flies from Jeju City (CJU) to Seoul (GMP).
scheduled from CJU
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 LJ520 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 LJ520 actually runs
Pro Flight Search has tracked every published board update for LJ520 across the CJU and GMP boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: left noticeably late (~38 min) but landed a little late (~9 min). Not enough to call it.
The verdict above is that record speaking, so it reflects how LJ520 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 LJ520? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — LJ520 Jeju City to Seoul on-time performance, measured from the CJU and GMP airport boards.
https://proflightsearch.com/flight/LJ520
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