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 2106 LANDED 1:57 PM MT, ~8 MIN LATE · SCHEDULED TIME UNKNOWN
Today

QX 2106 · SEA → BOI

took off 11:55 AM PT · landed 1:57 PM MT (scheduled time unknown)
Forecast issued Wed 6:00 PM ET · 3h after departure

Odds over time

Arrive at BOI more than 15 minutes late?
27% 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% 10% 20% 30% 40% 1.0d 12h 6h Departs Lands