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 5603 at 06:00 is the safest bet, 10% chance of being 15+ min late; the others run 20–29%.

Safest bet that day AA 5603 CAE 06:00 → DCA 07:40 · 10% chance 15+ min late · usually 88% on time Riskiest AA 5108 CAE 19:38 → DCA 21:20 · 29% chance 15+ min late · usually 43% 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 5603 American flown by PSA Flight history →	CAE 06:00	DCA 07:40	10%	4%	1.6%	88%
AA 5107 American flown by PSA Flight history →	CAE 10:39	DCA 12:19	20%	7%	1.4%	76%
AA 5108 American flown by PSA Flight history →	CAE 19:38	DCA 21:20	29%	11%	1.9%	43%

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