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.

UNITED · FLIGHT UA 1298 LANDED 10:33 PM ET, ~9 MIN LATE · SCHEDULED TIME UNKNOWN
Today

UA 1298 · SFO → PHL

took off 3:02 PM PT · landed 10:33 PM ET (scheduled time unknown)
Forecast issued Fri 10:00 PM ET · 4h after departure

Odds over time

Arrive at PHL more than 15 minutes late?
51% chance · ±0 pts +19 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 20% 40% 60% 80% 3.8d 2d 1d 12h 6h Departs Lands