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 SCHEDULED · SCHEDULED TIME UNKNOWN
Yesterday

UA 280 · DEN → ANC

departs 7:25 PM MT · arrives 10:43 PM AKT
Forecast issued Wed 10:00 PM ET · 1h after departure

Odds over time

Arrive at ANC more than 15 minutes late?
41% chance · ±1 pts −6 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% 3.1d 2d 1d 12h 6h Departs Lands