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.

ITA AIRWAYS · FLIGHT AZ 641 TAXIING (LEFT THE GATE 4:45 PM PT) · SCHEDULED TIME UNKNOWN
Today

AZ 641 · SFO → FCO

left the gate 4:45 PM PT · taxiing (scheduled time unknown)
Your aircraft is EITYH (A339), coming in as AZ 640 from FCO: landed 2:31 PM PT.
Forecast issued Tue 7:00 PM ET · 1h before departure

Odds over time

Arrive at FCO 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% 7h 6h Now Departs Lands