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 1553 LANDED 9:22 PM CT, ~8 MIN LATE · SCHEDULED TIME UNKNOWN

WN 1553 · DAL → TUL

took off 8:39 PM CT · landed 9:22 PM CT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 0h before departure

Odds over time

Arrive at TUL more than 15 minutes late?
29% chance · ±1 pts −1 pt · 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