Schedule: a typical Friday (the flights of Jul 31, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
AMERICAN · FLIGHT AA 1556
SCHEDULED · TYPICAL SCHEDULE
AA 1556 · BOS → DCA
departs 10:51 AM ET · arrives 12:33 PM ET
Forecast issued Wed 12:00 PM ET · 47h before departure
Odds over time
Arrive at DCA more than 15 minutes late?
13%
chance · ±3 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
-
-
-
-
How late will it get to DCA?
-
On time or early
86%
-
15–30 min late
2%
-
30 min–1 hour late
5%
-
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%.