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.

FRONTIER · FLIGHT F9 1474 LANDED 2:27 PM ET, ~3 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

F9 1474 · TPA → PHL

took off 12:23 PM ET · landed 2:27 PM ET (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 10h after departure

Odds over time

Arrive at PHL more than 15 minutes late?
41% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 20% 40% 60% 80% 2h Departs Lands