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.

UNITED · FLIGHT UA 280 LANDED 5:58 PM MT, ~7 MIN LATE · SCHEDULED TIME UNKNOWN

UA 280 · PHX → DEN

took off 3:43 PM MT · landed 5:58 PM MT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 3h after departure

Odds over time

Arrive at DEN more than 15 minutes late?
39% chance · ±2 pts −7 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 20% 40% 60% 80% 1.2d 1d 12h 6h Departs Lands