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 3463 at 06:05 is the safest bet, 4% chance of being 15+ min late; the others run 24–28%.

Safest bet that day WN 3463 RSW 06:05 → BWI 08:30 · 4% chance 15+ min late · usually 95% on time Riskiest WN 4294 RSW 18:55 → BWI 21:30 · 28% chance 15+ min late · usually 56% 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 3463 Southwest Flight history →	RSW 06:05	BWI 08:30	4%	1%	3.5%	95%
WN 4609 Southwest Flight history →	RSW 14:05	BWI 16:30	24%	10%	12.1%	85%
WN 4294 Southwest Flight history →	RSW 18:55	BWI 21:30	28%	13%	5.4%	56%

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