Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · 4 nonstops

Sun, Oct 11: WN 3247 at 10:00 is the safest bet, 9% chance of being 15+ min late; evening flights run 31–42%.

Safest bet that day WN 3247 MDW 10:00 → OMA 11:37 · 9% chance 15+ min late Riskiest WN 2946 MDW 21:40 → OMA 23:17 · 42% 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 3247 Southwest	MDW 10:00	OMA 11:37	9%	2%	0.8%	no record
WN 1861 Southwest	MDW 14:05	OMA 15:41	18%	5%	1.1%	no record
WN 1411 Southwest	MDW 17:10	OMA 18:46	31%	9%	5.6%	no record
WN 2946 Southwest	MDW 21:40	OMA 23:17	42%	13%	2.5%	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 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