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 2031 LANDED 9:04 PM MT, ~4 MIN LATE · SCHEDULED TIME UNKNOWN

UA 2031 · EWR → JAC

took off 6:39 PM ET · landed 9:04 PM MT (scheduled time unknown)
Forecast issued Fri 10:00 PM ET · 3h after departure

Odds over time

Arrive at JAC more than 15 minutes late?
63% chance · ±2 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% 1h Departs Lands