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 870 LANDED 10:19 AM ET, ~3 MIN LATE · SCHEDULED TIME UNKNOWN

AA 870 · MSP → MIA

took off 6:22 AM CT · landed 10:19 AM ET (scheduled time unknown)
Forecast issued Wed 10:00 PM ET · 15h after departure

Odds over time

Arrive at MIA more than 15 minutes late?
19% chance · ±0 pts +4 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 10% 20% 30% 40% 4h Departs Lands