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 20 LANDED 2:24 PM ET, ~9 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

B6 20 · LHR → JFK

took off 12:09 PM BST · landed 2:24 PM ET (scheduled time unknown)
Forecast issued Wed 7:00 PM ET · 12h after departure

Odds over time

Arrive at JFK more than 15 minutes late?
12% chance · ±0 pts +2 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 5% 10% 15% 20% 1.0d 12h 6h Departs Lands