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.

DELTA · FLIGHT DL 2181 LANDED 10:38 PM ET, ~11 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

DL 2181 · LGA → BOS

took off 9:48 PM ET · landed 10:38 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 0h before departure

Odds over time

Arrive at BOS more than 15 minutes late?
53% chance · ±2 pts +3 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