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 378 LANDED 9:02 PM PT, ~5 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 378 · SJC → SAN

took off 8:02 PM PT · landed 9:02 PM PT (scheduled time unknown)
Forecast issued Fri 10:00 PM ET · 1h before departure

Odds over time

Arrive at SAN more than 15 minutes late?
53% chance · ±5 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 20% 40% 60% 80% 3h Now Departs Lands