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.

DELTA · FLIGHT DL 63 LANDED 4:17 PM ET, ~11 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

DL 63 · MAD → BOS

took off 3:04 PM CEST · landed 4:17 PM ET (scheduled time unknown)
Forecast issued Tue 4:00 PM ET · 7h after departure

Odds over time

Arrive at BOS more than 15 minutes late?
18% 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% 9h 6h Departs Lands