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.

AMERICAN · FLIGHT AA 2520 LANDED 6:36 PM ET, ~9 MIN LATE · SCHEDULED TIME UNKNOWN

AA 2520 · DFW → DCA

took off 3:02 PM CT · landed 6:36 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 6h after departure

Odds over time

Arrive at DCA more than 15 minutes late?
33% 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% 15% 30% 45% 60% 19h 12h 6h Departs Lands