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 957 IN THE AIR (OFF 7:58 PM PT, ETA 12:14 AM CT) · SCHEDULED TIME UNKNOWN
Today

WN 957 · SAN → SAT

took off 7:58 PM PT · expected to land 12:14 AM CT (scheduled time unknown)
Forecast issued Sun 10:00 PM ET · 1h before departure

Odds over time

Arrive at SAT more than 15 minutes late?
47% chance · ±2 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% 25% 50% 75% 100% 1.0d 12h 6h Now Departs Lands