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 3051 LANDED 7:50 PM CT, ~6 MIN LATE · SCHEDULED TIME UNKNOWN

WN 3051 · PNS → STL

took off 6:20 PM CT · landed 7:50 PM CT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 2h after departure

Odds over time

Arrive at STL more than 15 minutes late?
16% chance · ±0 pts +2 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 5% 10% 15% 20% 1.1d 12h 6h Departs Lands Now