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 398 LANDED 11:50 AM CT, ~1 MIN EARLY · SCHEDULED TIME UNKNOWN

UA 398 · BNA → ORD

took off 10:43 AM CT · landed 11:50 AM CT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 10h after departure

Odds over time

Arrive at ORD more than 15 minutes late?
39% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 15% 30% 45% 60% 8h 6h Departs Lands