Schedule: a typical summer Wednesday (the flights of Jul 29, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
AMERICAN · FLIGHT AA 1556SCHEDULED · TYPICAL SCHEDULE
Yesterday
AA 1556 · DCA → BOS
departs 8:32 AM ET · arrives 10:11 AM ET
Forecast issued Wed 10:00 PM ET · 14h after departure
Odds over time
Arrive at BOS more than 15 minutes late?
20%chance · ±0 pts−1 pt · 24h
HOW SURE WE AREVery high. The odds now come almost entirely from live conditions.
How late will it get to BOS?
On time or early
79%
15–30 min late
6%
30 min–1 hour late
8%
1–2 hours late
5%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.