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.

ALASKA · FLIGHT AS 478 LANDED 4:36 PM PT, ~19 MIN LATE · SCHEDULED TIME UNKNOWN
Today

AS 478 · BUR → SEA

took off 2:09 PM PT · landed 4:36 PM PT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 5h after departure

Odds over time

Arrive at SEA more than 15 minutes late?
39% 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% 20% 40% 60% 80% 1.1d 12h 6h Departs Lands