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 1208 LANDED 2:04 PM ET, ON TIME · SCHEDULED TIME UNKNOWN
Today

G4 1208 · SFB → EYW

took off 1:04 PM ET · landed 2:04 PM ET (scheduled time unknown)
Forecast issued Sun 1:00 PM ET · 0h before departure

Odds over time

Arrive at EYW more than 15 minutes late?
23% chance · ±1 pts +8 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 1.0d 12h 6h Now Departs Lands