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: WN 199 at 05:11 is the safest bet, 4% chance of being 15+ min late; the others run 10–27%.

Safest bet that day WN 199 LAX 05:11 → DAL 10:20 · 4% chance 15+ min late Riskiest WN 155 LAX 15:26 → DAL 20:35 · 27% 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 199 Southwest	LAX 05:11	DAL 10:20	4%	1%	0.6%	no record
WN 2294 Southwest	LAX 07:41	DAL 12:52	10%	2%	0.6%	no record
WN 155 Southwest	LAX 15:26	DAL 20:35	27%	9%	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 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