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 2276 LANDED 12:39 PM PT, ~16 MIN LATE · SCHEDULED TIME UNKNOWN

QX 2276 · YEG → SEA

took off 11:49 AM MDT · landed 12:39 PM PT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 8h after departure

Odds over time

Arrive at SEA more than 15 minutes late?
32% chance · ±0 pts +5 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% 15h 12h 6h Departs Lands