Flight LJ 6421: Seoul Gimpo → Jeju

Jinair12 November 2026ScheduledUpdated 16 min ago, official airport data

All flights Seoul Gimpo → Jeju

Departure

Seoul Gimpo GMP

14:35

Scheduled

Terminal: Domestic

Not departed yet

Flight time: 1 h 15 min

Arrival

Jeju CJU

15:50

Scheduled

Terminal: Domestic

Data from the official airport boards. Times are local to each airport.

Follow flight LJ 6421, 12 November 2026

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Flight time: 1 h 15 min
Distance: ≈ 451 km
On time: 28%
Average departure delay: 27 min
Days of the week

Punctuality of flight LJ 6421

“On time” means the flight left no later than 15 minutes after its scheduled departure time. Finished flights counted: 18, over the last 60 days of the airport boards.

Flights counted: 18
On time: 28%
Average departure delay: 27 min
Cancelled: 0

On time, up to 15 min late5
Delayed 16–60 min12
Delayed over 60 min1
Cancelled0

One bar per finished flight, the oldest on the left; the height is the delay at departure. The history table below lists the same flights.

Flight LJ 6421 history

Flights of the last 60 days from the airport boards. Delay against the scheduled departure.

Date / Departure	Route	Departure	Delay	Status
Wed 11 Nov14:35+33 min	Seoul Gimpo → Jeju	14:35	+33 min	Landed
Tue 10 Nov14:35+69 min	Seoul Gimpo → Jeju	14:35	+69 min	Landed
Mon 9 Nov14:35+40 min	Seoul Gimpo → Jeju	14:35	+40 min	Landed
Sun 8 Nov14:35+49 min	Seoul Gimpo → Jeju	14:35	+49 min	Landed
Sat 7 Nov14:35+25 min	Seoul Gimpo → Jeju	14:35	+25 min	Landed
Fri 6 Nov14:35+21 min	Seoul Gimpo → Jeju	14:35	+21 min	Landed
Thu 5 Nov14:35+26 min	Seoul Gimpo → Jeju	14:35	+26 min	Landed
Wed 4 Nov14:35+59 min	Seoul Gimpo → Jeju	14:35	+59 min	Landed
Tue 3 Nov14:35+35 min	Seoul Gimpo → Jeju	14:35	+35 min	Landed
Mon 2 Nov14:35+182 min	Seoul Gimpo → Jeju	14:35	+182 min	Landed
Sun 1 Nov14:35+33 min	Seoul Gimpo → Jeju	14:35	+33 min	Landed
Sat 31 Oct14:35+21 min	Seoul Gimpo → Jeju	14:35	+21 min	Landed
Fri 30 Oct14:35+42 min	Seoul Gimpo → Jeju	14:35	+42 min	Landed
Thu 29 Oct14:35+34 min	Seoul Gimpo → Jeju	14:35	+34 min	Landed
Wed 28 Oct14:35+26 min	Seoul Gimpo → Jeju	14:35	+26 min	Landed
Tue 27 Oct14:35+33 min	Seoul Gimpo → Jeju	14:35	+33 min	Landed
Mon 26 Oct14:35+26 min	Seoul Gimpo → Jeju	14:35	+26 min	Landed
Sun 25 Oct14:35+25 min	Seoul Gimpo → Jeju	14:35	+25 min	Landed

Flight LJ 6421: schedule and upcoming dates

Days it flew in the last 60 days
Usual departure time: 14:35
Usual arrival time: 15:50

Dates already on the boards

Thu 12 NovDeparture 14:35, Arrival 15:50Scheduled

Route of flight LJ 6421

Departure airport: Seoul Gimpo (GMP). Arrival airport: Jeju (CJU). Scheduled flight time: about 1 h 15 min. Distance between the airports: about 451 km in a straight line.

Questions about flight LJ 6421

Is flight LJ 6421 on time today?

For 12 November 2026 the airport board shows flight LJ 6421 as “Scheduled”. Departure: Seoul Gimpo, 14:35. Arrival: Jeju, 15:50.

Which terminal and gate does flight LJ 6421 use?

Seoul Gimpo (GMP): Terminal Domestic. Jeju (CJU): Terminal Domestic. Gates are announced shortly before boarding and can change: check the screens at the airport.

How often is flight LJ 6421 delayed?

Over 18 flights: on time (within 15 min) 28%, average delay 27 min, cancelled 0.

How long does flight LJ 6421 take?

About 1 h 15 min by the schedule. The airports are 451 km apart.

On which days does flight LJ 6421 operate?

In the last 60 days it was on the boards on: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday.

How can I get notified when flight LJ 6421 changes?

Use the notifications block at the top of this page: Telegram or e-mail. We will message you when the status, time, terminal, check-in desk or gate changes on the airport board, exactly as the board shows it. Every message has a Stop button or link.

Flight LJ 6421, 12 November 2026