Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Sat 8:00 PM ET · 3 nonstops

Fri, Oct 9: WN 3189 at 07:25 is the safest bet, 3% chance of being 15+ min late; the others run 21–29%.

Safest bet that day WN 3189 PBI 07:25 → BWI 09:50 · 3% chance 15+ min late · usually 93% on time Riskiest WN 3191 PBI 19:05 → BWI 21:35 · 29% chance 15+ min late · usually 63% 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 3189 Southwest Flight history →	PBI 07:25	BWI 09:50	3%	1%	0.8%	93%
WN 1072 Southwest Flight history →	PBI 14:40	BWI 17:05	21%	10%	3.6%	88%
WN 3191 Southwest Flight history →	PBI 19:05	BWI 21:35	29%	16%	2.5%	63%

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