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.

SOUTHWEST · FLIGHT WN 1842 LANDED 7:10 AM ET, ~5 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 1842 · DTW → BWI

took off 5:57 AM ET · landed 7:10 AM ET (scheduled time unknown)
Forecast issued Sat 10:00 PM ET · 16h after departure

Odds over time

Arrive at BWI more than 15 minutes late?
8% chance · ±0 pts −1 pt · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 3% 6% 9% 12% 3h Departs Lands