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 3446 LANDED 4:16 PM CT, ~6 MIN LATE · SCHEDULED TIME UNKNOWN
Today

WN 3446 · MSY → STL

took off 2:52 PM CT · landed 4:16 PM CT (scheduled time unknown)
Forecast issued Mon 8:00 PM ET · 4h after departure

Odds over time

Arrive at STL more than 15 minutes late?
30% chance · ±0 pts +3 pts · 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% 1.0d 12h 6h Departs Lands