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.

CAPE AIR · FLIGHT 9K 5050 CANCELLED · SCHEDULED TIME UNKNOWN
Yesterday

9K 5050 · BOS → ACK

departs 6:52 PM ET · arrives 7:30 PM ET
Forecast issued Mon 6:00 PM ET · 1h before departure

Odds over time

Arrive at ACK more than 15 minutes late?
31% chance · ±0 pts +6 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 21h 12h 6h Now Departs Lands