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.

ALLEGIANT · FLIGHT G4 387 LANDED 10:59 AM ET, ~4 MIN LATE · SCHEDULED TIME UNKNOWN
Today

G4 387 · CVG → FLL

took off 8:48 AM ET · landed 10:59 AM ET (scheduled time unknown)
Forecast issued Sun 10:00 AM ET · 1h after departure

Odds over time

Arrive at FLL more than 15 minutes late?
31% chance · ±3 pts +11 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 Now Lands