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 2796 LANDED 9:53 PM MT, ~16 MIN LATE · SCHEDULED TIME UNKNOWN

WN 2796 · MDW → PHX

took off 8:31 PM CT · landed 9:53 PM MT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 0h before departure

Odds over time

Arrive at PHX more than 15 minutes late?
42% chance · ±2 pts +1 pt · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 1.0d 12h 6h Departs Lands