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 1124 LANDED 2:31 PM CT, ~16 MIN LATE · SCHEDULED TIME UNKNOWN

UA 1124 · PHX → ORD

took off 9:26 AM MT · landed 2:31 PM CT (scheduled time unknown)
Forecast issued Wed 10:00 PM ET · 10h after departure

Odds over time

Arrive at ORD more than 15 minutes late?
46% chance · ±0 pts +2 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 20% 40% 60% 80% 1.1d 12h 6h Departs Lands