Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · 3 nonstops

Sun, Oct 11: WN 705 at 05:10 is the safest bet, 6% chance of being 15+ min late; the others run 29–40%.

Safest bet that day WN 705 LAX 05:10 → STL 10:51 · 6% chance 15+ min late Riskiest WN 2540 LAX 13:40 → STL 19:18 · 40% chance 15+ min late

Every nonstop on Sun, Oct 11

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 705 Southwest	LAX 05:10	STL 10:51	6%	2%	0.6%	no record
AA 5000 American flown by SkyWest Flight history →	LAX 18:13	STL 23:59	29%	12%	0.7%	77%
WN 2540 Southwest	LAX 13:40	STL 19:18	40%	10%	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 Sun, Oct 11 (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