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 184 LANDED 6:27 AM MT, ~9 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 184 · MDW → PHX

took off 5:20 AM CT · landed 6:27 AM MT (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 16h after departure

Odds over time

Arrive at PHX more than 15 minutes late?
5% chance · ±0 pts −4 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% 3h Departs Lands