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 178 LANDED 7:22 AM ET, ~12 MIN LATE · SCHEDULED TIME UNKNOWN
Today

B6 178 · LAS → BOS

took off 12:00 AM PT · landed 7:22 AM ET (scheduled time unknown)
Forecast issued Sat 4:00 PM ET · 13h after departure

Odds over time

Arrive at BOS more than 15 minutes late?
28% chance · ±0 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% 3h Departs Lands