Wednesday, October 7 · typical odds for a Wednesday (too early for a weather forecast) · issued Sat 12:00 PM ET · 6 nonstops

Wed, Oct 7 looks like a normal day here: all 6 nonstops are 4–10% likely to arrive 15+ min late.

Safest bet that day WN 4397 HOU 08:34 → BNA 10:36 · 4% chance 15+ min late Riskiest WN 1898 HOU 19:06 → BNA 21:07 · 10% chance 15+ min late

Every nonstop on Wed, Oct 7

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 4397 Southwest	HOU 08:34	BNA 10:36	4%	1%	0.6%	no record
WN 259 Southwest	HOU 07:40	BNA 09:41	4%	1%	0.6%	no record
WN 1897 Southwest	HOU 10:08	BNA 12:10	6%	1%	0.6%	no record
WN 1896 Southwest	HOU 13:40	BNA 15:42	9%	2%	0.6%	no record
WN 143 Southwest	HOU 15:52	BNA 17:54	10%	3%	0.6%	no record
WN 1898 Southwest	HOU 19:06	BNA 21:07	10%	2%	0.6%	no record

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 Wed, Oct 7 (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