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 4736 LANDED 6:31 PM ET, ~2 MIN LATE · SCHEDULED TIME UNKNOWN
Today

WN 4736 · LAS → CLE

took off 12:09 PM PT · landed 6:31 PM ET (scheduled time unknown)
Forecast issued Tue 9:00 PM ET · 6h after departure

Odds over time

Arrive at CLE more than 15 minutes late?
50% chance · ±0 pts – · 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% 11h 6h Departs Lands