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 2958 LANDED 2:38 AM ET, ~9 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

G4 2958 · LCK → SFB

took off 12:57 AM ET · landed 2:38 AM ET (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 21h after departure

Odds over time

Arrive at SFB more than 15 minutes late?
16% chance · ±0 pts −5 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