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 8003 LANDED 1:13 PM ET, ~2 MIN EARLY · SCHEDULED TIME UNKNOWN

G4 8003 · ELP → GRR

took off 8:39 AM MT · landed 1:13 PM ET (scheduled time unknown)
Forecast issued Wed 10:00 PM ET · 11h after departure

Odds over time

Arrive at GRR more than 15 minutes late?
9% 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