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 501 LANDED 8:23 AM ET, ~6 MIN LATE · SCHEDULED TIME UNKNOWN
Today

G4 501 · FLL → TYS

took off 6:40 AM ET · landed 8:23 AM ET (scheduled time unknown)
Forecast issued Sat 3:00 PM ET · 8h after departure

Odds over time

Arrive at TYS more than 15 minutes late?
25% 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% 2h Departs Lands