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.

FRONTIER · FLIGHT F9 2271 LANDED 11:17 PM ET, ~13 MIN LATE · SCHEDULED TIME UNKNOWN

F9 2271 · MIA → ATL

took off 9:46 PM ET · landed 11:17 PM ET (scheduled time unknown)
Forecast issued Fri 10:00 PM ET · 0h before departure

Odds over time

Arrive at ATL more than 15 minutes late?
43% chance · ±2 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 15% 30% 45% 60% 1h Departs Lands