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.

AUSTRIAN · FLIGHT OS 31 LANDED 2:03 PM ET, ~21 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

OS 31 · VIE → BOS

took off 10:54 AM CET · landed 2:03 PM ET (scheduled time unknown)
Forecast issued Tue 7:00 PM ET · 13h after departure

Odds over time

Arrive at BOS more than 15 minutes late?
16% 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% 1h Departs Lands