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.

ENVOY · FLIGHT MQ 4207 LANDED 1:18 PM PT, ~51 MIN LATE · SCHEDULED TIME UNKNOWN

MQ 4207 · PHX → SEA

took off 10:40 AM MT · landed 1:18 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?
36% chance · ±0 pts +1 pt · 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% 20h 12h 6h Departs Lands