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 3833 LANDED 1:14 PM ET, ~10 MIN LATE · SCHEDULED TIME UNKNOWN

WN 3833 · STL → DTW

took off 11:09 AM CT · landed 1:14 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 10h after departure

Odds over time

Arrive at DTW more than 15 minutes late?
11% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 5% 10% 15% 20% 8h 6h Departs Lands