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 1803 LANDED 7:20 AM CT, ~32 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

UA 1803 · PIT → ORD

took off 7:05 AM ET · landed 7:20 AM CT (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 15h after departure

Odds over time

Arrive at ORD more than 15 minutes late?
22% chance · ±0 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% 10h 6h Departs Lands