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 2237 IN THE AIR (OFF 12:10 AM PT, ETA 6:43 AM ET) · SCHEDULED TIME UNKNOWN
Today

WN 2237 · LAS → ATL

took off 12:10 AM PT · expected to land 6:43 AM ET (scheduled time unknown)
Forecast issued Tue 2:00 AM ET · 1h before departure

Odds over time

Arrive at ATL more than 15 minutes late?
22% chance · ±0 pts +11 pts · 24h
HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.
MOSTLY HISTORY WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 6.1d 2d 1d 12h 6h Now Departs Lands