TW840 Jeju CityCJU · 18:55 CheongjuCJJ
TW840 by T'way Airlines flies from Jeju City (CJU) to Cheongju (CJJ) for the Mon, Sep 7 departure.
departs CJU · on schedule
board checked 50m ago · checking again in 45s
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 operation0 cancelled · 10 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 Jeju City to Cheongju flights today
same route · T'way AirlinesIf TW840 is cancelled, these are the other T'way Airlines nonstop flights from Jeju City to Cheongju 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 TW840 actually runs
Pro Flight Search has tracked every published board update for TW840 across the CJU and CJJ boards: schedule changes, gate pushes and actual clocks. Usually departs ~33 min late. Based on 10 confirmed departures · 2/10 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how TW840 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 CJJ published them.
Planning around TW840? 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 — TW840 Jeju City to Cheongju on-time performance, measured from the CJU and CJJ airport boards.
https://proflightsearch.com/flight/TW840
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