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 3444 LANDED 9:04 PM MT, ~11 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 3444 · SAN → PHX

took off 8:14 PM PT · landed 9:04 PM MT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 1h before departure

Odds over time

Arrive at PHX more than 15 minutes late?
46% chance · ±0 pts −10 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