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 814 IN THE AIR (OFF 5:58 PM MT, ETA 10:42 PM CT) · SCHEDULED TIME UNKNOWN
Today

WN 814 · PHX → BNA

took off 5:58 PM MT · expected to land 10:42 PM CT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 1h after departure

Odds over time

Arrive at BNA more than 15 minutes late?
46% chance · ±0 pts +5 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 20% 40% 60% 80% 24h 12h 6h Departs Lands