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 178 LANDED 7:43 PM CT, ~9 MIN LATE · SCHEDULED TIME UNKNOWN

WN 178 · STL → MKE

took off 6:50 PM CT · landed 7:43 PM CT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 2h after departure

Odds over time

Arrive at MKE more than 15 minutes late?
22% chance · ±0 pts +0 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 24h 12h 6h Departs Lands Now