Thursday, October 8 · typical odds for a Thursday (too early for a weather forecast) · issued Sun 12:00 PM ET · 4 nonstops

Thu, Oct 8 looks like a normal day here: all 4 nonstops are 8–14% likely to arrive 15+ min late.

Safest bet that day WN 377 STL 11:41 → BNA 12:59 · 8% chance 15+ min late Riskiest WN 753 STL 17:51 → BNA 19:09 · 14% chance 15+ min late

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.


WN 377 Southwest	STL 11:41	BNA 12:59	8%	2%	0.5%	no record
WN 1577 Southwest	STL 13:06	BNA 14:24	11%	3%	0.5%	no record
WN 2861 Southwest	STL 14:31	BNA 15:49	13%	3%	0.5%	no record
WN 753 Southwest	STL 17:51	BNA 19:09	14%	4%	0.5%	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 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