Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Mon 4:00 PM ET · 4 nonstops

Sat, Oct 10 looks like a normal day here: all 4 nonstops are 7–16% likely to arrive 15+ min late.

Safest bet that day AA 5930 ROC 05:48 → PHL 07:08 · 7% chance 15+ min late · usually 91% on time Riskiest PT 5789 ROC 17:07 → PHL 18:38 · 16% chance 15+ min late

Every nonstop on Sat, Oct 10

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.


AA 5930 American flown by Piedmont Flight history →	ROC 05:48	PHL 07:08	7%	3%	1.4%	91%
AA 5813 American flown by Piedmont Flight history →	ROC 07:33	PHL 08:57	10%	3%	1.4%	87%
AA 6126 American flown by Piedmont Flight history →	ROC 13:02	PHL 14:32	13%	6%	1.3%	89%
PT 5789 Piedmont	ROC 17:07	PHL 18:38	16%	6%	1.5%	no record

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 Sat, Oct 10 (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