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 3510 LANDED 8:14 AM MT, ~12 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 3510 · SFO → PHX

took off 6:45 AM PT · landed 8:14 AM MT (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 12h after departure

Odds over time

Arrive at PHX more than 15 minutes late?
10% chance · ±0 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% 6h Departs Lands