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 2834 at 08:50 is the safest bet, 9% chance of being 15+ min late; the others run 19–29%.

Safest bet that day WN 2834 MDW 08:50 → MSY 11:05 · 9% chance 15+ min late · usually 79% on time Riskiest WN 2836 MDW 21:40 → MSY 23:55 · 29% chance 15+ min late · usually 66% 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 2834 Southwest Flight history →	MDW 08:50	MSY 11:05	9%	2%	0.7%	79%
WN 3743 Southwest Flight history →	MDW 14:25	MSY 16:40	19%	5%	1.0%	30%
WN 2836 Southwest Flight history →	MDW 21:40	MSY 23:55	29%	8%	7.2%	66%

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