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 3934 LANDED 9:28 PM MT, ~15 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

MQ 3934 · SEA → PHX

took off 6:56 PM PT · landed 9:28 PM MT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 0h before departure

Odds over time

Arrive at PHX more than 15 minutes late?
46% chance · ±0 pts +11 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% 1.1d 12h 6h Departs Lands