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 1223 LANDED 7:44 PM CT, ~13 MIN LATE · SCHEDULED TIME UNKNOWN

UA 1223 · BWI → ORD

took off 7:14 PM ET · landed 7:44 PM CT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 3h after departure

Odds over time

Arrive at ORD more than 15 minutes late?
46% chance · ±0 pts +9 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% 1.1d 12h 6h Departs Lands Now