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

Fri, Oct 9: one nonstop, AA 5618 at 17:48, with a 25% chance of arriving 15+ min late.

Safest bet that day AA 5618 PHL 17:48 → GSP 19:49 · 25% chance 15+ min late · usually 68% on time

Every nonstop on Fri, Oct 9

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 5618 American flown by PSA Flight history →	PHL 17:48	GSP 19:49	25%	11%	1.0%	68%
AA 5800 American flown by Piedmont no forecast: 12-month record	PHL 08:44	GSP 10:50	7%	3%	0.0%	93%
AA 6132 American flown by Piedmont no forecast: 12-month record	PHL 12:00	GSP 14:04	17%	10%	2.8%	83%
AA 5801 American flown by Piedmont no forecast: 12-month record	PHL 15:45	GSP 17:50	29%	8%	3.3%	71%

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