Thursday, October 8 · typical odds for a Thursday (too early for a weather forecast) · issued Sun 12:00 PM ET · 3 nonstops

Thu, Oct 8: AA 817 at 06:31 is the safest bet, 7% chance of being 15+ min late; the others run 13–21%.

Safest bet that day AA 817 BZN 06:31 → DFW 10:37 · 7% chance 15+ min late · usually 81% on time Riskiest AA 947 BZN 16:17 → DFW 20:25 · 21% chance 15+ min late · usually 48% on time

Every nonstop on Thu, Oct 8

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 817 American Flight history →	BZN 06:31	DFW 10:37	7%	3%	0.8%	81%
AA 952 American Flight history →	BZN 12:02	DFW 16:10	13%	5%	0.7%	84%
AA 947 American Flight history →	BZN 16:17	DFW 20:25	21%	7%	0.9%	48%

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 Thu, Oct 8 (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