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 2091 LANDED 3:58 PM PT, ~12 MIN LATE · SCHEDULED TIME UNKNOWN

QX 2091 · GEG → SFO

took off 2:15 PM PT · landed 3:58 PM PT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 5h after departure

Odds over time

Arrive at SFO more than 15 minutes late?
30% chance · ±0 pts +7 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% 1.1d 12h 6h Departs Lands