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 3259 SCHEDULED · TYPICAL SCHEDULE

Thursday, October 1

AA 3259 · PHL → SEA

departs 7:35 PM ET · arrives 10:56 PM PT

Forecast issued Tue 5:00 PM ET · 51h before departure

Arrive at SEA more than 15 minutes late?

22% chance · ±4 pts – · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to SEA?

On time or early
77%
15–30 min late
2%
30 min–1 hour late
14%
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%.

What’s moving the odds

↑ Later flights pick up delays from earlier in the day

↑ Arrivals into SEA at that hour are often late

↑ This flight has been late 27% of the time recently

↓ Mostly benign weather forecast at PHL

↓ Other factors

Weather at each end

PHL (origin) Gusts11 kt Ceilingnone (clear) Visibility10+ mi Precipnone

SEA (destination) Gusts7 kt Ceiling3,900 ft Visibility9 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 3259 · PHL → SEA

Odds over time

How late will it get to SEA?