Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Sun 4:00 PM ET · 3 nonstops

Fri, Oct 9: AA 1287 at 06:00 is the safest bet, 11% chance of being 15+ min late; the others run 24–41%.

Safest bet that day AA 1287 CHS 06:00 → MIA 07:43 · 11% chance 15+ min late · usually 89% on time Riskiest AA 1657 CHS 20:13 → MIA 21:58 · 41% chance 15+ min late · usually 59% 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.


AA 1287 American Flight history →	CHS 06:00	MIA 07:43	11%	3%	2.3%	89%
AA 1642 American Flight history →	CHS 11:04	MIA 12:48	24%	6%	4.3%	77%
AA 1657 American Flight history →	CHS 20:13	MIA 21:58	41%	10%	2.4%	59%

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