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 4549 SCHEDULED · SCHEDULED TIME UNKNOWN
Tomorrow

WN 4549 · BWI → CVG

departs 12:06 AM ET · arrives 1:07 AM ET
Your aircraft is N927WN (B737), coming in as WN 766 from MCO: landed 2:58 PM ET.
Forecast issued Sun 8:00 PM ET · 4h before departure

Odds over time

Arrive at CVG more than 15 minutes late?
41% chance · ±0 pts +18 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% 15% 30% 45% 60% 6.0d 2d 1d 12h Now Departs Lands