Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 8:00 PM ET · connections flying that day

Sun, Oct 11: JetBlue via Fort Lauderdale, leaving 09:42, is the safest bet: 45% chance of reaching Jacksonville on time; the tightest one-ticket connections make it only 68% of the time.

Nonstops that day

All 2 nonstops →


B6 1742 JetBlue Flight history →	SJU 09:23	JAX 12:47	17%	8%	1.0%	81%
F9 3305 Frontier Flight history →	SJU 06:45	JAX 10:04	18%	8%	1.3%	78%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Jacksonville on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival. Layovers up to 4 hours. Pick a connection for its 12-month details.


Delta Details →	SJU 07:30 → ATL 11:14DL 1763	1h 23m Atlanta	ATL 12:37 → JAX 13:45DL 3024	6h 15m	97%	78%
Delta Details →	SJU 07:35 → JFK 11:30DL 1854	2h 25m New York	JFK 13:55 → JAX 16:44DL 1035	9h 09m	98%	77%
Delta Details →	SJU 14:08 → BOS 18:19DL 1780	2h 16m Boston	BOS 20:35 → JAX 23:39DL 5593 · flown by Republic	9h 31m	97%	74%
United Details →	SJU 01:00 → EWR 05:10UA 2219	50m Newark	EWR 06:00 → JAX 08:31UA 1207	7h 31m	77%	70%
Delta Details →	SJU 12:58 → ATL 16:59DL 1930	2h 59m Atlanta	ATL 19:58 → JAX 21:13DL 2265	8h 15m	100%	67%
Delta Details →	SJU 14:42 → ATL 18:36DL 1882	2h 57m Atlanta	ATL 21:33 → JAX 22:49DL 2315	8h 07m	98%	66%
American Details →	SJU 15:40 → CLT 19:39AA 783	2h 42m Charlotte	CLT 22:21 → JAX 23:52AA 3078	8h 12m	98%	66%
Delta Details →	SJU 13:10 → JFK 17:19DL 1966	1h 13m New York	JFK 18:32 → JAX 21:02DL 5123 · flown by Endeavor	7h 52m	90%	61%
Tight connection: often missed
Frontier Details →	SJU 00:53 → PHL 05:01F9 2695	54m Philadelphia	PHL 05:55 → JAX 08:18F9 2861	7h 25m	68%	56%
JetBlue Details →	SJU 09:42 → FLL 12:23B6 2154	57m Fort Lauderdale	FLL 13:20 → JAX 14:40B6 2118	4h 58m	73%	45%

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 Sun, Oct 11 (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