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.

SOUTHWEST · FLIGHT WN 4781 LANDED 1:38 AM CT, ~6 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 4781 · BNA → MKE

took off 12:32 AM CT · landed 1:38 AM CT (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 20h after departure

Odds over time

Arrive at MKE more than 15 minutes late?
13% chance · ±0 pts −4 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 10% 20% 30% 40% 6h Departs Lands