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 2378 LANDED 2:11 PM ET, ~9 MIN LATE · SCHEDULED TIME UNKNOWN

AA 2378 · LGA → MIA

took off 11:23 AM ET · landed 2:11 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 10h after departure

Odds over time

Arrive at MIA more than 15 minutes late?
48% chance · ±0 pts +9 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 20% 40% 60% 80% 21h 12h 6h Departs Lands