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.

SOUTHWEST · FLIGHT WN 3750 LANDED 10:22 PM PT, ~13 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

WN 3750 · DEN → GEG

took off 9:26 PM MT · landed 10:22 PM PT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 1h before departure

Odds over time

Arrive at GEG more than 15 minutes late?
33% chance · ±3 pts −4 pts · 24h
HOW SURE WE ARE High. The odds now come mostly from live FAA and airport data.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 1.1d 12h 6h Now Departs Lands