Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Sun 4:00 PM ET · 7 nonstops

Fri, Oct 9: B6 754 at 05:01 is the safest bet, 12% chance of being 15+ min late; the others run 14–39%.

Safest bet that day B6 754 SJU 05:01 → FLL 07:40 · 12% chance 15+ min late · usually 88% on time Riskiest B6 154 SJU 17:00 → FLL 19:42 · 39% chance 15+ min late · usually 54% 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.


B6 754 JetBlue Flight history →	SJU 05:01	FLL 07:40	12%	5%	1.2%	88%
B6 1754 JetBlue Flight history →	SJU 07:00	FLL 09:40	14%	5%	1.4%	77%
F9 3017 Frontier Flight history →	SJU 06:00	FLL 08:48	15%	5%	1.7%	83%
B6 2154 JetBlue Flight history →	SJU 09:42	FLL 12:23	19%	8%	1.2%	73%
B6 54 JetBlue Flight history →	SJU 11:00	FLL 13:41	21%	8%	1.2%	74%
B6 1454 JetBlue Flight history →	SJU 14:05	FLL 16:47	30%	11%	1.3%	70%
B6 154 JetBlue Flight history →	SJU 17:00	FLL 19:42	39%	15%	2.7%	54%

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