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 5332 LANDED 4:12 PM CT, ~10 MIN LATE · SCHEDULED TIME UNKNOWN
Today

OO 5332 · STL → ORD

took off 3:22 PM CT · landed 4:12 PM CT (scheduled time unknown)
Forecast issued Tue 6:00 PM ET · 2h after departure

Odds over time

Arrive at ORD more than 15 minutes late?
37% chance · ±1 pts −1 pt · 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