Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
AMERICAN · FLIGHT AA 621SCHEDULED · TYPICAL SCHEDULE
Yesterday
AA 621 · PHL → ATL
departs 11:15 AM ET · arrives 1:35 PM ET
Forecast issued Fri 10:00 PM ET · 11h after departure
Odds over time
Arrive at ATL more than 15 minutes late?
15%chance · ±0 pts−24 pts · 24h
HOW SURE WE AREVery high. The odds now come almost entirely from live conditions.
How late will it get to ATL?
On time or early
84%
15–30 min late
<1%
30 min–1 hour late
9%
1–2 hours late
3%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.