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 5179 LANDED 6:27 PM ET, ~2 MIN LATE · SCHEDULED TIME UNKNOWN
Today

OH 5179 · MHT → DCA

took off 5:13 PM ET · landed 6:27 PM ET (scheduled time unknown)
Forecast issued Tue 7:00 PM ET · 2h after departure

Odds over time

Arrive at DCA more than 15 minutes late?
32% chance · ±1 pts −7 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% 1.1d 12h 6h Departs Lands