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 9436 LANDED 6:46 PM ET, ~7 MIN EARLY · SCHEDULED TIME UNKNOWN

F9 9436 · MCO → IAD

took off 5:05 PM ET · landed 6:46 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 5h after departure

Odds over time

Arrive at IAD more than 15 minutes late?
26% chance · ±0 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