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 407 LANDED 10:07 PM ET, ~22 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

AA 407 · ORD → BOS

took off 7:01 PM CT · landed 10:07 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 2h after departure

Odds over time

Arrive at BOS more than 15 minutes late?
66% chance · ±2 pts +16 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 25% 50% 75% 100% 1.2d 1d 12h 6h Departs Lands