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 1404 IN THE AIR (OFF 1:55 PM PT, ETA 2:42 PM PT) · SCHEDULED TIME UNKNOWN
Today

WN 1404 · LAS → FAT

took off 1:55 PM PT · expected to land 2:42 PM PT (scheduled time unknown)
Forecast issued Tue 3:00 PM ET · 2h before departure

Odds over time

Arrive at FAT more than 15 minutes late?
64% chance · ±3 pts +26 pts · 24h
HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.
WEATHER FORECASTS LIVE IN THE AIR 0% 20% 40% 60% 80% 1.1d 12h 6h Now Departs Lands