KE1121 SeoulGMP · 13:25 Jeju CityCJU · 14:40
KE1121 by 대한항공 flies from Seoul (GMP) to Jeju City (CJU).
scheduled from GMP
⚖ KE1121 typically leaves +34 and lands +12. 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 +12 min · 0 cancelled · 14 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 · 대한항공If KE1121 is cancelled, these are the other 대한항공 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 KE1121 actually runs
Pro Flight Search has tracked every published board update for KE1121 across the GMP and CJU boards: schedule changes, gate pushes and actual clocks. Usually lands ~12 min late. Based on 14 confirmed landings · 9/14 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 KE1121 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 KE1121? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — KE1121 Seoul to Jeju City on-time performance, measured from the GMP and CJU airport boards.
https://proflightsearch.com/flight/KE1121
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