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 1658 IN THE AIR (OFF 4:09 PM MT, ETA 5:01 PM PT) · SCHEDULED TIME UNKNOWN
Today

WN 1658 · DEN → SAN

took off 4:09 PM MT · expected to land 5:01 PM PT (scheduled time unknown)
Forecast issued Tue 4:00 PM ET · 2h before departure

Odds over time

Arrive at SAN more than 15 minutes late?
31% chance · ±5 pts −12 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