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 307 LANDED 11:34 AM PT, ~9 MIN LATE · SCHEDULED TIME UNKNOWN

UA 307 · ORD → SJC

took off 9:34 AM CT · landed 11:34 AM PT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 11h after departure

Odds over time

Arrive at SJC more than 15 minutes late?
23% chance · ±0 pts +12 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 2.9d 2d 1d 12h 6h Departs Lands