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.

REPUBLIC · FLIGHT YX 131 LANDED 10:01 PM ET, ~8 MIN LATE · SCHEDULED TIME UNKNOWN

YX 131 · CMH → DCA

took off 9:00 PM ET · landed 10:01 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 1h after departure

Odds over time

Arrive at DCA more than 15 minutes late?
28% 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% 4h Departs Lands