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 3205 LANDED 2:24 AM MT, ~21 MIN LATE · SCHEDULED TIME UNKNOWN
Today

F9 3205 · IAH → DEN

took off 1:26 AM CT · landed 2:24 AM MT (scheduled time unknown)
Forecast issued Tue 7:00 PM ET · 17h after departure

Odds over time

Arrive at DEN more than 15 minutes late?
24% chance · ±0 pts +8 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
MOSTLY HISTORY WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 6.1d 2d 1d 12h 6h Departs Lands