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.

AMERICAN · FLIGHT AA 3063 SCHEDULED · SCHEDULED TIME UNKNOWN
Yesterday

AA 3063 · ORD → LAX

departs 8:04 PM CT · arrives 9:52 PM PT
Forecast issued Wed 10:00 PM ET · 1h after departure

Odds over time

Arrive at LAX more than 15 minutes late?
60% chance · ±7 pts −3 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 25% 50% 75% 100% 1.1d 12h 6h Departs Lands