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.

SOUTHWEST · FLIGHT WN 4490 LANDED 9:33 AM ET, ~14 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 4490 · BNA → MIA

took off 6:43 AM CT · landed 9:33 AM ET (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 14h after departure

Odds over time

Arrive at MIA more than 15 minutes late?
13% 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% 4h Departs Lands