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 1550 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2 Yesterday

AA 1550 · DCA → BOS

departs 6:00 AM ET · arrives 7:39 AM ET

Forecast issued Fri 10:00 PM ET · 16h after departure

Arrive at BOS more than 15 minutes late?

3% chance · ±0 pts −5 pts · 24h

HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.

How late will it get to BOS?

On time or early
96%
15–30 min late
0%
30 min–1 hour late
<1%
1–2 hours late
2%
Over 2 hours late
1%
Cancelled
<1%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↓ Early flights usually leave on time

↓ Mostly benign weather forecast at DCA

Weather at each end

DCA (origin) Gusts28 kt Ceiling3,300 ft Visibility2.5 mi Precip0.76 in

BOS (destination) Gusts28 kt Ceiling5,000 ft Visibility7 mi Precipnone

How this resolves

Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.

Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.

AA 1550 · DCA → BOS

Odds over time

How late will it get to BOS?