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 158 LANDED 1:50 AM PT, ~15 MIN LATE · SCHEDULED TIME UNKNOWN
Today

G4 158 · TYS → LAS

took off 12:30 AM ET · landed 1:50 AM PT (scheduled time unknown)
Forecast issued Fri 12:00 PM ET · 11h after departure

Odds over time

Arrive at LAS more than 15 minutes late?
19% 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