CJU Jeju

How deep the CJU board really is

The table above says where a courier can fly from CJU. This reads the same 34 destinations back for the questions a dispatcher asks second: how much of the board rests on one airline, how much of it runs less than daily, whether the return leg is as thick as the outbound, what the clock here does to a Gulf working day and which of the destinations shut at night, all of it computed on 2026-09-07 from AeroDataBox scheduled route statistics.

• 18of the 34 destinations are flown by one airline
• 9destinations run less than once a day
• 8destinations have four or more departures a day
• 35.3%of the destinations name Jin Air, the largest presence here

Who holds the departures at CJU

21 airlines appear on the CJU board and they do not hold it evenly. Jin Air is on 12 of the 34 destinations, 35.3 per cent of them, and on 3 of those it is the only airline flying the sector. The destinations it appears on carry 266.4 of the 294.6 departures a day this airport files, though other airlines fly some of the same sectors, so read that as reach rather than as a share of the aircraft.

The next largest presence is Korean Air on 10 destinations. 9 of the 21 airlines at CJU appear on a single destination each, which is the long tail every airport carries, and none of it is a rebooking option when the sector you need is the one that fell over.

That is a middling concentration at CJU: one airline on 35.3 per cent of the destinations and the other 64.7 per cent spread across 20 airlines. A cancellation inside the Jin Air network is often survivable inside the same booking, but on the 22 destinations Jin Air does not touch, a rebooking means moving to a carrier the desk has to check for a through fare first.

How much of the CJU board is daily

Of the 34 destinations, 25 are flown at least once a day and 9 are not, though none of them drops to once a week or less. The median destination on the CJU board is flown about twice a day.

An average of 0.29 flights a day is the schedule statistic, and it is worth translating it before anything is promised to anybody: CJU to Zhengzhou (CGO) is 2 a week, so a missed departure there is not a delay of hours, it is the next slot.

The five busiest destinations carry 234 of the 294.6 departures a day, 79.4 per cent of the whole board. More than half of everything that leaves CJU is aimed at those five places, so the depth on the board above is thinner than the destination count suggests, and a hand carry that is not going to one of them is planned around a single departure time.

Destination	Country	The only airline on it	Flights a week	km	Routing
Guangzhou CAN	China	Spring Airlines	2	1,709	plan this
Seoul ICN	South Korea	Jeju Air	2	440	plan this
Zhengzhou CGO	China	West Air (China)	2	1,171	plan this
Taichung City RMQ	Taiwan	Tigerair Taiwan	3	1,176	plan this
Taipa MFM	Macau	T'Way Air	3	1,787	plan this
Wenzhou WNZ	China	Air China	3	823	plan this
Tokyo NRT	Japan	Korean Air	5	1,294	plan this
Sacheon HIN	South Korea	Korean Air	6	227	plan this
Wuxi WUX	China	Juneyao Airlines	6	611	plan this

The nine destinations out of CJU where one airline holds the sector and files fewer than seven departures a week, with the weekly figure taken as the average daily rate multiplied by seven rather than as a fixed timetable.

The way back from CJU

The desk holds the return direction for 18 of the 34 destinations, and a courier plans the way back on those figures rather than on the outbound. On none of those 18 does the return run more than a quarter thinner than the outbound, so a turnaround through CJU is a question of hours rather than of whether an aircraft exists.

It runs the other way as well: Guangzhou (CAN) files 0.43 a day back into CJU against 0.29 outbound, which is the shape that strands a courier at this end rather than at the far end.

The clock at CJU

CJU keeps Asia/Seoul time, five hours ahead of Dubai all year.

When it is 09:00 on a Dubai working morning it is 14:00 at CJU, so a nine to six day at each end overlaps for four hours. A customs question raised in the last five hours of the Dubai afternoon reaches nobody at CJU until the next morning, which is the practical limit on a same day instruction here.

The night at CJU

1 of the destinations from here carry a documented night restriction of their own, which is a departure time question at this end rather than an arrival problem at the other.

Into Tokyo (NRT) the door shuts at 23:00 local, so the last departure from CJU that lands inside it leaves around 20:51, on a modelled block of 2h 09m. Those one departure times out of CJU are worked backwards from the published window with the block time model this site uses everywhere, 720 to 880 km an hour by sector length with thirty minutes on the ground, so they are arithmetic rather than a timetable and the desk checks the published departure before it promises the landing.

Where CJU turns up on the rest of this site

The airport also sits behind the South Korea country desk, which sets out the customs practice, the working week and the road legs behind this airport.

The site publishes 6 airport pair pages that start or end at CJU, each with the distance, the block time, the carriers on the sector and a door to door clock. The busiest are Jeju to Busan-si (PUS), Jeju to Taipei (TPE) and Jeju to Nanjing (NKG).

One courier posting names CJU as the airport a courier here flies from: Jeju City.

To price a movement rather than read the board, the route calculator opens with CJU already set as the origin, and it works out the flying time, the distance and the delivery hour for any of the 34 destinations above.