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.

UNITED · FLIGHT UA 1258 LANDED 12:02 PM ET, ~5 MIN LATE · SCHEDULED TIME UNKNOWN

UA 1258 · ORD → LGA

took off 9:24 AM CT · landed 12:02 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 12h after departure

Odds over time

Arrive at LGA more than 15 minutes late?
46% chance · ±0 pts +14 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% 19h 12h 6h Departs Lands