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 2391 LANDED 7:32 AM PT, ON TIME · SCHEDULED TIME UNKNOWN
Yesterday

WN 2391 · DEN → SAN

took off 6:42 AM MT · landed 7:32 AM PT (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 13h after departure

Odds over time

Arrive at SAN more than 15 minutes late?
13% 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% 5h Departs Lands