Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · connections flying that day

Sun, Oct 11 looks like a normal day here: all 2 nonstops are 22–27% likely to arrive 15+ min late.

Nonstops that day

All 2 nonstops →


F9 3306 Frontier Flight history →	JAX 12:06	SJU 15:30	22%	9%	1.2%	76%
B6 1743 JetBlue Flight history →	JAX 15:21	SJU 18:41	27%	10%	1.0%	71%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach San Juan 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 →	JAX 05:30 → ATL 06:42DL 2722	1h 31m Atlanta	ATL 08:13 → SJU 11:53DL 1930	6h 23m	98%	85%
Delta Details →	JAX 07:00 → ATL 08:15DL 2450	1h 30m Atlanta	ATL 09:45 → SJU 13:32DL 1882	6h 32m	99%	81%
Delta Details →	JAX 08:17 → ATL 09:34DL 2569	3h 26m Atlanta	ATL 13:00 → SJU 16:39DL 1946	8h 22m	99%	77%
United Details →	JAX 11:37 → IAH 13:11UA 4039 · flown by Mesa	1h 52m Houston	IAH 15:03 → SJU 20:38UA 701	9h 01m	97%	76%
Delta Details →	JAX 14:50 → ATL 16:06DL 3024	2h 39m Atlanta	ATL 18:45 → SJU 22:29DL 1861	7h 39m	98%	73%
American Details →	JAX 06:18 → CLT 07:45AA 1834	3h 18m Charlotte	CLT 11:03 → SJU 14:50AA 783	8h 32m	99%	71%
JetBlue Details →	JAX 07:17 → FLL 08:50B6 17	1h 20m Fort Lauderdale	FLL 10:10 → SJU 12:48B6 1553	5h 31m	100%	69%
United Details →	JAX 07:05 → IAH 08:29UA 2453	1h 34m Houston	IAH 10:03 → SJU 15:42UA 1192	8h 37m	93%	68%

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