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 1534 LANDED 3:21 PM CT, ~16 MIN LATE · SCHEDULED TIME UNKNOWN
Today

AA 1534 · LGA → ORD

took off 2:38 PM ET · landed 3:21 PM CT (scheduled time unknown)
Forecast issued Tue 3:00 PM ET · 0h before departure

Odds over time

Arrive at ORD more than 15 minutes late?
45% chance · ±1 pts +12 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 19h 12h 6h Departs Lands