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.

AVIANCA EL SALVADOR · FLIGHT TA 584 LANDED 6:05 PM ET, ~8 MIN EARLY · SCHEDULED TIME UNKNOWN
Yesterday

TA 584 · SAL → IAD

took off · landed 6:05 PM ET (scheduled time unknown)
Forecast issued Mon 11:00 PM ET · 9h after departure

Odds over time

Arrive at IAD more than 15 minutes late?
16% 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