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 3861 LANDED 7:14 AM ET, ~12 MIN LATE · SCHEDULED TIME UNKNOWN
Today

MQ 3861 · CMH → DCA

took off 6:18 AM ET · landed 7:14 AM ET (scheduled time unknown)
Forecast issued Sat 7:00 PM ET · 13h after departure

Odds over time

Arrive at DCA more than 15 minutes late?
16% chance · ±0 pts +5 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 10% 20% 30% 40% 9h 6h Departs Lands