Wednesday, October 7 · typical odds for a Wednesday (too early for a weather forecast) · issued Sat 12:00 PM ET · 3 nonstops

Wed, Oct 7 looks like a normal day here: all 3 nonstops are 18–23% likely to arrive 15+ min late.

Safest bet that day WN 3226 TPA 15:57 → SJU 18:56 · 18% chance 15+ min late Riskiest F9 3980 TPA 20:47 → SJU 00:03 · 23% chance 15+ min late · usually 71% on time

Every nonstop on Wed, Oct 7

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 3226 Southwest	TPA 15:57	SJU 18:56	18%	4%	0.9%	no record
B6 1751 JetBlue Flight history →	TPA 13:50	SJU 17:03	18%	6%	1.1%	73%
F9 3980 Frontier Flight history →	TPA 20:47	SJU 00:03	23%	7%	1.4%	71%

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 Wed, Oct 7 (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