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 4380 IN THE AIR (OFF 6:52 PM MT, ETA 7:42 PM PT) · SCHEDULED TIME UNKNOWN
Today

WN 4380 · PHX → SNA

took off 6:52 PM MT · expected to land 7:42 PM PT (scheduled time unknown)
Forecast issued Tue 8:00 PM ET · 2h before departure

Odds over time

Arrive at SNA more than 15 minutes late?
41% chance · ±0 pts −3 pts · 24h
HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.
WEATHER FORECASTS LIVE IN THE AIR 0% 20% 40% 60% 80% 1.0d 12h 6h Now Departs Lands