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 1509SCHEDULED · TYPICAL SCHEDULE
Tomorrow
AA 1509 · BOS → ORD
departs 7:00 AM ET · arrives 9:01 AM CT
Forecast issued Wed 2:00 AM ET · 29h before departure
Odds over time
Arrive at ORD more than 15 minutes late?
16%chance · ±2 pts+4 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to ORD?
On time or early
83%
15–30 min late
1%
30 min–1 hour late
11%
1–2 hours late
2%
Over 2 hours late
2%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.