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.

SKYWEST · FLIGHT OO 3378 LANDED 6:44 PM PT, ~7 MIN LATE · SCHEDULED TIME UNKNOWN
Today

OO 3378 · PSC → SEA

took off 6:00 PM PT · landed 6:44 PM PT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 1h after departure

Odds over time

Arrive at SEA more than 15 minutes late?
50% chance · ±0 pts +9 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% 24h 12h 6h Departs Lands