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.

UNITED · FLIGHT UA 804 LANDED 2:45 PM ET, ~6 MIN LATE · SCHEDULED TIME UNKNOWN

UA 804 · HND → IAD

took off · landed 2:45 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 19h after departure

Odds over time

Arrive at IAD more than 15 minutes late?
6% 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% 3% 6% 9% 12% 12h 6h Departs Lands