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 1296 LANDED 9:53 PM MT, ~11 MIN EARLY · SCHEDULED TIME UNKNOWN
Yesterday

WN 1296 · COS → PHX

took off 9:33 PM MT · landed 9:53 PM MT (scheduled time unknown)
Forecast issued Fri 10:00 PM ET · 2h before departure

Odds over time

Arrive at PHX more than 15 minutes late?
61% 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% 20% 40% 60% 80% 3h Now Departs Lands