CJU → USNJeju City to Ulsan

live

Direct flights from Jeju City (CJU) to Ulsan (USN): 14 nonstop departures observed each week across 2 airlines. 21% of the last 24 operated flights arrived within 15 minutes of schedule. The median arrival is 27 minutes late. No cancellations were recorded across the 24 tracked flights. The nonstop covers 349 km, an estimated 57 minutes in the air. Measured by Pro Flight Search from live flight boards at Jeju City and Ulsan. Updated 19 October 2026 at 23:23 UTC.

Today, CJU → USN

Tue 20 Oct · local times
  1. 09:20 BX8300에어부산 On scheduleGate 8 ·
  2. 13:10 KE1596대한항공 On scheduleGate 5 ·
  3. 16:10 BX8304에어부산 On scheduleGate 8 ·

Checked CJU board 08:23

CJU Jeju City busy · +15
USN Ulsan tracking
349 km · ~0h 57m est.
dep bank 09:20–16:1014x weekly
Runs rough · 2 airlines · 14x weekly · nonstop
21% on time

of the last 24 operated CJU → USN flights arrived within 15 minutes

Median arrival delay is +27 min. 0 of 24 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+27 minacross the last 24 operated legs
Flight time~0h 57mestimated from route distance
Weekly departures14x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 24

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Air Busan대한항공

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Air BusanBX6% on time

Flights BX8300 09:20 daily · BX8304 16:10 daily

대한항공KE50% on time

Flights KE1596 13:10 daily

History

operated legs · board outcomes
10-19BX8300departed+35
10-19BX8304departed+64
10-19KE1596departed+15
10-18BX8300departed+39
10-18BX8304departed+26
10-18KE1596departed+21
10-17BX8300departed+35
10-17BX8304departed+103
10-17KE1596departed+13
10-16BX8300departed+12
10-16BX8304departed+45
10-16KE1596departed+15
10-15BX8300departed+21
10-15BX8304departed+39
10-15KE1596departed+17
10-14BX8300departed+29
10-14BX8304departed+68
10-14KE1596departed+23
10-13BX8300departed+43
10-13BX8304departed+36
10-13KE1596departed+14
10-12BX8300departed+24
10-12BX8304departed+27
10-12KE1596departed+17

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
CJUJeju City +15 min busy Full CJU delay board →
USNUlsan tracking Full USN delay board →

How the Jeju City to Ulsan route actually runs

Pro Flight Search records official board updates for nonstop CJU to USN flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Jeju City (CJU) to Ulsan (USN) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/CJU-USN
How we measure this →

CJU to USN questions

Is CJU–USN running on time right now?

Mostly on schedule. The departure side at CJU is the weaker end, route health score 80/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on CJU–USN?

Operators schedule morning departures around 09:20 from CJU. Earlier flights typically land before destination-airport delays accumulate later in the day; check the USN delay card to confirm conditions when you'd arrive.

How long is the flight from CJU to USN?

Great-circle distance is 349 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 55–60 min gate-to-gate on this route.

How often does CJU–USN fly?

2 carriers operate this route, around 21 flights a week between them. Compare carrier days and times in the airline list above.