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 1626 LANDED 5:16 PM ET, ~7 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 1626 · AUS → BOS

took off 12:29 PM CT · landed 5:16 PM ET (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 8h after departure

Odds over time

Arrive at BOS more than 15 minutes late?
42% chance · ±0 pts – · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
LIVE IN THE AIR 0% 15% 30% 45% 60% 9h 6h Departs Lands