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 1155 LANDED 6:59 PM ET, ~5 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

AA 1155 · CLT → BOS

took off 5:21 PM ET · landed 6:59 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 5h after departure

Odds over time

Arrive at BOS more than 15 minutes late?
56% chance · ±0 pts −8 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