RS905 SeoulGMP · 13:45 Jeju CityCJU · 15:05
RS905 by Air Seoul flies from Seoul (GMP) to Jeju City (CJU) for the Wed, Sep 23 departure.
departs GMP · on schedule
board checked 2m ago · checking again in 45s
⚖ RS905 typically leaves +35 and lands +7. 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 +7 min · 1 cancelled · 9 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 · Air SeoulIf RS905 is cancelled, these are the other Air Seoul 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 RS905 actually runs
Pro Flight Search has tracked every published board update for RS905 across the GMP and CJU boards: schedule changes, gate pushes and actual clocks. Usually lands ~7 min late. Based on 8 confirmed landings · 5/8 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 RS905 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 RS905? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — RS905 Seoul to Jeju City on-time performance, measured from the GMP and CJU airport boards.
https://proflightsearch.com/flight/RS905
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