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: WN 4767 at 06:50 is the safest bet, 5% chance of being 15+ min late; the others run 19–22%.

Safest bet that day WN 4767 OKC 06:50 → HOU 08:20 · 5% chance 15+ min late · usually 96% on time Riskiest WN 3117 OKC 18:10 → HOU 19:40 · 22% chance 15+ min late · usually 65% 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.


WN 4767 Southwest Flight history →	OKC 06:50	HOU 08:20	5%	2%	1.7%	96%
WN 4414 Southwest Flight history →	OKC 12:25	HOU 13:55	19%	5%	1.3%	62%
WN 3117 Southwest Flight history →	OKC 18:10	HOU 19:40	22%	7%	0.8%	65%

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