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.

FRONTIER · FLIGHT F9 1755 LANDED 1:09 AM PT, ~11 MIN LATE · SCHEDULED TIME UNKNOWN
Today

F9 1755 · IAH → LAX

took off 12:05 AM CT · landed 1:09 AM PT (scheduled time unknown)
Forecast issued Tue 7:00 PM ET · 18h after departure

Odds over time

Arrive at LAX more than 15 minutes late?
24% chance · ±0 pts +9 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
MOSTLY HISTORY WEATHER FORECASTS LIVE IN THE AIR 0% 10% 20% 30% 40% 6.0d 2d 1d 12h 6h Departs Lands