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.

ENDEAVOR · FLIGHT 9E 4719 LANDED 3:47 PM ET, ~17 MIN LATE · SCHEDULED TIME UNKNOWN

9E 4719 · YUL → LGA

took off 2:46 PM EDT · landed 3:47 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 7h after departure

Odds over time

Arrive at LGA more than 15 minutes late?
35% chance · ±0 pts +5 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% 24h 12h 6h Departs Lands