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.

PSA · FLIGHT OH 5237 LANDED 4:43 PM ET, ~6 MIN LATE · SCHEDULED TIME UNKNOWN

OH 5237 · DCA → BUF

took off 3:53 PM ET · landed 4:43 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 6h after departure

Odds over time

Arrive at BUF more than 15 minutes late?
40% chance · ±0 pts +5 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 3.0d 2d 1d 12h 6h Departs Lands