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 279 LANDED 5:36 PM ET, ~6 MIN LATE · SCHEDULED TIME UNKNOWN
Today

WN 279 · AUS → BOS

took off 12:51 PM CT · landed 5:36 PM ET (scheduled time unknown)
Forecast issued Mon 8:00 PM ET · 6h after departure

Odds over time

Arrive at BOS more than 15 minutes late?
30% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 10h 6h Departs Lands