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 4757 PROBABLY LANDED (THE FAA HASN'T CONFIRMED THE LANDING TIME) · SCHEDULED TIME UNKNOWN
Today

G4 4757 · SGF → CLL

took off 1:01 AM CT · probably landed (not confirmed) (scheduled time unknown)
Forecast issued Wed 3:00 AM ET · 1h after departure

Odds over time

Arrive at CLL more than 15 minutes late?
10% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 5% 10% 15% 20% 2h Departs Lands