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.

ENVOY · FLIGHT MQ 4029 LANDED 9:34 PM ET, ~5 MIN LATE · SCHEDULED TIME UNKNOWN

MQ 4029 · RDU → DCA

took off 8:55 PM ET · landed 9:34 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 1h after departure

Odds over time

Arrive at DCA more than 15 minutes late?
44% chance · ±0 pts +7 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% 1.0d 12h 6h Departs Now