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.

SOUTHERN AIRWAYS EXPRESS · FLIGHT 9X 121 LANDED 5:52 PM ET, ~27 MIN LATE · SCHEDULED TIME UNKNOWN
Today

9X 121 · IAD → DUJ

took off 4:32 PM ET · landed 5:52 PM ET (scheduled time unknown)
Forecast issued Mon 10:00 PM ET · 6h after departure

Odds over time

Arrive at DUJ more than 15 minutes late?
15% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 5% 10% 15% 20% 3h Departs Lands