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 looks like a normal day here: all 3 nonstops are 16–18% likely to arrive 15+ min late.

Safest bet that day UA 1497 IAH 23:56 → SJU 05:29 · 16% chance 15+ min late · usually 86% on time Riskiest UA 1192 IAH 10:03 → SJU 15:42 · 18% chance 15+ min late · usually 79% 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.


UA 1497 United Flight history →	IAH 23:56	SJU 05:29	16%	4%	0.7%	86%
UA 701 United Flight history →	IAH 15:03	SJU 20:38	17%	5%	0.7%	91%
UA 1192 United Flight history →	IAH 10:03	SJU 15:42	18%	4%	0.6%	79%

Alternatives with one stop that day

All connections →


Frontier Details →	IAH 08:20 → FLL 12:01F9 1496	1h 16m Fort Lauderdale	FLL 13:17 → SJU 16:05F9 3018	6h 45m	82%	52%

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