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 1917 LANDED 5:15 PM ET, ~11 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

AA 1917 · STI → MIA

took off · landed 5:15 PM ET (scheduled time unknown)
Forecast issued Wed 10:00 PM ET · 6h after departure

Odds over time

Arrive at MIA more than 15 minutes late?
44% chance · ±0 pts −7 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% 1.1d 12h 6h Departs Lands