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 2034 at 06:20 is the safest bet, 8% chance of being 15+ min late; evening flights run 35–36%.

Safest bet that day WN 2034 SAN 06:20 → HOU 11:45 · 8% chance 15+ min late · usually 96% on time Riskiest WN 3212 SAN 16:25 → HOU 21:45 · 36% chance 15+ min late · usually 44% 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 2034 Southwest Flight history →	SAN 06:20	HOU 11:45	8%	2%	1.6%	96%
WN 4675 Southwest Flight history →	SAN 20:40	HOU 01:55	35%	11%	0.7%	54%
WN 3212 Southwest Flight history →	SAN 16:25	HOU 21:45	36%	12%	0.7%	44%

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