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 852 LANDED 9:46 AM ET, ~7 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

B6 852 · MCO → BOS

took off 7:20 AM ET · landed 9:46 AM ET (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 15h after departure

Odds over time

Arrive at BOS more than 15 minutes late?
22% chance · ±0 pts −2 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 10% 20% 30% 40% 4h Departs Lands