Japan AirlinesJL78% on time
Flights JL3740 10:30 daily · JL3744 12:20 Mo Tu We Th Fr Su · JL3746 14:15 daily · JL3750 17:10 daily
live
Direct flights from Yakushima (KUM) to Kagoshima (KOJ): 7 nonstop departures observed each week across 1 airline. 78% of the last 40 operated flights arrived within 15 minutes of schedule. The median arrival is on schedule. 1 of the 40 tracked flights was cancelled. The nonstop covers 158 km, an estimated 42 minutes in the air. Measured by Pro Flight Search from live flight boards at Yakushima and Kagoshima. Updated 25 September 2026 at 11:09 UTC.
KUM
Yakushima
tracking
KOJ
Kagoshima
smooth · +0
158 km · ~0h 42m est.
Runs mixed · 1 airline · 7x weekly · nonstop
78% on time
of the last 40 operated KUM → KOJ flights arrived within 15 minutes
Median arrival delay is +0 min. 1 of 40 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+0 minacross the last 40 operated legs
Flight time~0h 42mestimated from route distance
Weekly departures7x1 direct airline on the leg
Cancelled2.5%recent route rate · 1 of 40
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Japan Airlines
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 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsnext sweep in 120s
How the Yakushima to Kagoshima route actually runs
Pro Flight Search records official board updates for nonstop KUM to KOJ 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 — Yakushima (KUM) to Kagoshima (KOJ) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/KUM-KOJ
KUM to KOJ questions
Is KUM–KOJ running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from KUM to KOJ?
Great-circle distance is 158 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 41–44 min gate-to-gate on this route.
How often does KUM–KOJ fly?
Japan Airlines runs the route with about 34 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at KUM and arrival-side delay at KOJ, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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