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.

SKYWEST · FLIGHT OO 3958 LANDED 1:16 PM CT, ~19 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

OO 3958 · DTW → ORD

took off 1:25 PM ET · landed 1:16 PM CT (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 9h after departure

Odds over time

Arrive at ORD more than 15 minutes late?
37% chance · ±0 pts −10 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% 10h 6h Departs Lands