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 1637 IN THE AIR (OFF 4:34 PM ET, ETA 5:48 PM ET) · SCHEDULED TIME UNKNOWN
Today

UA 1637 · EWR → DTW

took off 4:34 PM ET · expected to land 5:48 PM ET (scheduled time unknown)
Forecast issued Tue 3:00 PM ET · 2h before departure

Odds over time

Arrive at DTW more than 15 minutes late?
38% chance · ±2 pts +2 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% 15% 30% 45% 60% 1.1d 12h 6h Now Departs Lands