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 1203 LANDED 11:51 AM ET, ~9 MIN LATE · SCHEDULED TIME UNKNOWN

AA 1203 · CLT → BUF

took off 10:32 AM ET · landed 11:51 AM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 11h after departure

Odds over time

Arrive at BUF more than 15 minutes late?
21% chance · ±0 pts +2 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 20h 12h 6h Departs Lands