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 4905 LANDED 8:27 PM ET, ~11 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

9E 4905 · STL → LGA

took off 5:31 PM CT · landed 8:27 PM ET (scheduled time unknown)
Forecast issued Wed 6:00 PM ET · 0h before departure

Odds over time

Arrive at LGA more than 15 minutes late?
31% chance · ±1 pts +15 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 1.0d 12h 6h Now Departs Lands