Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
AMERICAN · FLIGHT AA 1578SCHEDULED · TYPICAL SCHEDULE
Tomorrow
AA 1578 · BOS → LAX
departs 5:33 PM ET · arrives 8:55 PM PT
Forecast issued Wed 12:00 PM ET · 30h before departure
Odds over time
Arrive at LAX more than 15 minutes late?
37%chance · ±5 pts+10 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to LAX?
On time or early
62%
15–30 min late
14%
30 min–1 hour late
11%
1–2 hours late
9%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.