Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Mon 12:00 PM ET · 4 nonstops

Fri, Oct 9 looks like a normal day here: all 2 nonstops are 13–18% likely to arrive 15+ min late.

Safest bet that day AA 2354 PHL 12:45 → PWM 14:16 · 13% chance 15+ min late · usually 89% on time Riskiest AA 1889 PHL 21:00 → PWM 22:33 · 18% chance 15+ min late · usually 68% on time

Every nonstop on Fri, Oct 9

12-month record →

Ranked by the chance of arriving 15+ minutes late (typical odds: the weather this date has had in past years), with each flight’s on-time record over Aug 2025 – Jul 2026 beside it. Times are local. Pick a flight for its forecast. Click a column to sort. Dimmed: airlines we don’t forecast yet, shown with their 12-month record if they usually fly that weekday.


AA 2354 American Flight history →	PHL 12:45	PWM 14:16	13%	3%	0.7%	89%
AA 1889 American Flight history →	PHL 21:00	PWM 22:33	18%	6%	0.7%	68%
AA 6124 American flown by Piedmont no forecast: 12-month record	PHL 08:50	PWM 10:31	9%	2%	1.7%	91%
AA 6125 American flown by Piedmont no forecast: 12-month record	PHL 16:54	PWM 18:34	21%	8%	2.8%	79%

How these are worked out. Each flight’s odds are our forecast for that day (typical odds until the weather forecast covers it); flights of airlines we don’t forecast yet use their 12-month record and are marked. Makes the connection: the first flight’s 12-month lateness curve, scaled so its chance of arriving 15+ min late matches the day’s forecast, at the layover minus the 45-minute minimum (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled × second flight within 15 minutes, each from the day’s forecast.

About this data: forecast odds from our model for Fri, Oct 9 (newest published update); 12-month records from US DOT on-time data, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. JSON