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.

JETBLUE · FLIGHT B6 755 LANDED 4:20 PM ET, ~1 MIN LATE · SCHEDULED TIME UNKNOWN
Today

B6 755 · BOS → DCA

took off 3:06 PM ET · landed 4:20 PM ET (scheduled time unknown)
Forecast issued Tue 4:00 PM ET · 1h after departure

Odds over time

Arrive at DCA more than 15 minutes late?
39% chance · ±0 pts +9 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% 1.0d 12h 6h Departs Lands