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 4219 LANDED 4:34 PM ET, ~2 MIN LATE · SCHEDULED TIME UNKNOWN

MQ 4219 · MIA → BWI

took off 2:27 PM ET · landed 4:34 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 8h after departure

Odds over time

Arrive at BWI more than 15 minutes late?
35% chance · ±0 pts +2 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 20% 40% 60% 80% 19h 12h 6h Departs Lands