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 1556SCHEDULED · TYPICAL SCHEDULE
Tomorrow
AA 1556 · BOS → DCA
departs 10:51 AM ET · arrives 12:33 PM ET
Forecast issued Tue 11:00 PM ET · 36h before departure
Odds over time
Arrive at DCA more than 15 minutes late?
9%chance · ±2 pts−1 pt · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to DCA?
On time or early
90%
15–30 min late
1%
30 min–1 hour late
4%
1–2 hours late
2%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.