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.

STARLUX · FLIGHT JX 10 SCHEDULED · SCHEDULED TIME UNKNOWN
Yesterday

JX 10 · TPE → ONT

departs 7:56 PM CST · arrives 4:23 PM PT
Forecast issued Mon 5:00 PM ET · 9h after departure

Odds over time

Arrive at ONT more than 15 minutes late?
20% chance · ±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% 1h Departs Lands