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 2866 LANDED 7:37 PM PT, ~4 MIN LATE · SCHEDULED TIME UNKNOWN

UA 2866 · ATL → SFO

took off 6:06 PM ET · landed 7:37 PM PT (scheduled time unknown)
Forecast issued Fri 10:00 PM ET · 4h after departure

Odds over time

Arrive at SFO more than 15 minutes late?
22% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 10% 20% 30% 40% 1h Departs Lands