Tracked live by the FAA, but its flight plan was first seen after takeoff, so we don't know the scheduled time and can't say whether it's late.

JIN AIR · FLIGHT LJ 903 SCHEDULED · SCHEDULED TIME UNKNOWN
Yesterday

LJ 903 · ICN → GUM

departs 11:25 PM KST · arrives 4:31 AM ChST
Forecast issued Fri 11:00 PM ET · 13h after departure

Odds over time

Arrive at GUM more than 15 minutes late?
20% chance · ±0 pts +4 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 10% 20% 30% 40% 7h 6h Departs Lands