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.

SKYWEST · FLIGHT OO 5203 LANDED 10:10 PM ET, ~6 MIN LATE · SCHEDULED TIME UNKNOWN

OO 5203 · ORD → IAD

took off 7:50 PM CT · landed 10:10 PM ET (scheduled time unknown)
Forecast issued Fri 10:00 PM ET · 1h after departure

Odds over time

Arrive at IAD more than 15 minutes late?
41% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 20% 40% 60% 80% 1h Departs Lands