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 2409 LANDED 6:47 PM MT, ~5 MIN LATE · SCHEDULED TIME UNKNOWN

QX 2409 · GEG → BOI

took off 5:03 PM PT · landed 6:47 PM MT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 2h after departure

Odds over time

Arrive at BOI more than 15 minutes late?
24% chance · ±0 pts +4 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 Departs Lands Now