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 1172 LANDED 1:07 AM CT, ~10 MIN LATE · SCHEDULED TIME UNKNOWN
Today

WN 1172 · BWI → BNA

took off 12:40 AM ET · landed 1:07 AM CT (scheduled time unknown)
Forecast issued Sat 5:00 PM ET · 16h after departure

Odds over time

Arrive at BNA more than 15 minutes late?
15% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 25% 50% 75% 100% 2h Departs Lands