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 1427 LANDED 5:09 PM PT, ~4 MIN LATE · SCHEDULED TIME UNKNOWN

UA 1427 · ABQ → SFO

took off 4:10 PM MT · landed 5:09 PM PT (scheduled time unknown)
Forecast issued Wed 10:00 PM ET · 4h after departure

Odds over time

Arrive at SFO more than 15 minutes late?
27% 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% 1.0d 12h 6h Departs Lands