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 4114 LANDED 12:05 AM MT, ~20 MIN EARLY · SCHEDULED TIME UNKNOWN

WN 4114 · STL → PHX

took off 11:13 PM CT · landed 12:05 AM MT (scheduled time unknown)
Forecast issued Fri 10:00 PM ET · 3h before departure

Odds over time

Arrive at PHX more than 15 minutes late?
30% chance · ±0 pts – · 24h
HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.
LIVE IN THE AIR 0% 15% 30% 45% 60% 4h Now Departs Lands