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.

HORIZON · FLIGHT QX 2090 LANDED 9:04 PM PT, ~8 MIN LATE · SCHEDULED TIME UNKNOWN

QX 2090 · LAX → STS

took off 7:59 PM PT · landed 9:04 PM PT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 1h before departure

Odds over time

Arrive at STS more than 15 minutes late?
23% chance · ±1 pts +3 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 1.0d 12h 6h Now Departs Lands