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 3439 IN THE AIR (OFF 3:48 PM CT, ETA 5:27 PM CT) · SCHEDULED TIME UNKNOWN
Today

MQ 3439 · FAR → ORD

took off 3:48 PM CT · expected to land 5:27 PM CT (scheduled time unknown)
Forecast issued Tue 3:00 PM ET · 2h before departure

Odds over time

Arrive at ORD more than 15 minutes late?
28% chance · ±0 pts +8 pts · 24h
HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 1.1d 12h 6h Now Departs Lands