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 4463 LANDED 9:18 PM MT, ~5 MIN LATE · SCHEDULED TIME UNKNOWN

F9 4463 · DFW → DEN

took off 8:47 PM CT · landed 9:18 PM MT (scheduled time unknown)
Forecast issued Tue 11:00 PM ET · 1h after departure

Odds over time

Arrive at DEN more than 15 minutes late?
31% chance · ±2 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% 2h Departs Lands