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 1771 LANDED 2:15 PM PT, ~9 MIN LATE · SCHEDULED TIME UNKNOWN
Today

WN 1771 · FAT → LAS

took off 1:26 PM PT · landed 2:15 PM PT (scheduled time unknown)
Forecast issued Tue 4:00 PM ET · 0h before departure

Odds over time

Arrive at LAS more than 15 minutes late?
54% chance · ±2 pts +14 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 25% 50% 75% 100% 1.1d 12h 6h Now Departs Lands