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.

AMERICAN · FLIGHT AA 1550 LANDED 9:21 AM PT, ~4 MIN LATE · SCHEDULED TIME UNKNOWN

AA 1550 · DFW → LAS

took off 8:58 AM CT · landed 9:21 AM PT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 12h after departure

Odds over time

Arrive at LAS more than 15 minutes late?
37% chance · ±0 pts −2 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 19h 12h 6h Departs Lands