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 3547 LANDED 3:38 PM CT, ~12 MIN LATE · SCHEDULED TIME UNKNOWN
Today

WN 3547 · PWM → BNA

took off 2:14 PM ET · landed 3:38 PM CT (scheduled time unknown)
Forecast issued Mon 4:00 PM ET · 2h after departure

Odds over time

Arrive at BNA more than 15 minutes late?
16% chance · ±2 pts +2 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% 1.1d 12h 6h Departs Lands