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.

FRONTIER · FLIGHT F9 4601 LANDED 1:35 PM ET, ~8 MIN LATE · SCHEDULED TIME UNKNOWN
Today

F9 4601 · EWR → ATL

took off 11:51 AM ET · landed 1:35 PM ET (scheduled time unknown)
Forecast issued Wed 8:00 PM ET · 8h after departure

Odds over time

Arrive at ATL more than 15 minutes late?
33% chance · ±0 pts +13 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 3.0d 2d 1d 12h 6h Departs Lands