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 9004 LANDED 5:25 PM PT, ~16 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 9004 · LAS → SAN

took off 4:41 PM PT · landed 5:25 PM PT (scheduled time unknown)
Forecast issued Fri 11:00 PM ET · 4h after departure

Odds over time

Arrive at SAN more than 15 minutes late?
83% chance · ±0 pts +42 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
MOSTLY HISTORY WEATHER FORECASTS LIVE IN THE AIR 0% 25% 50% 75% 100% 6.8d 2d 1d 12h 6h Departs Lands