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.

DELTA · FLIGHT DL 1683 LANDED 8:24 PM ET, ~8 MIN LATE · SCHEDULED TIME UNKNOWN

DL 1683 · DCA → DTW

took off 7:24 PM ET · landed 8:24 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 3h after departure

Odds over time

Arrive at DTW more than 15 minutes late?
28% chance · ±1 pts −1 pt · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 1.1d 12h 6h Departs Lands