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 1267 LANDED 10:52 PM ET, ~5 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 1267 · DAL → DCA

took off 7:26 PM CT · landed 10:52 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 2h after departure

Odds over time

Arrive at DCA more than 15 minutes late?
30% chance · ±0 pts +0 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 1.0d 12h 6h Departs Now Lands