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Tuesday, October 6 · our forecast odds · issued Mon 11:00 AM ET · connections flying that day

Tomorrow: Delta via Atlanta, leaving 07:30, is the safest bet: 82% chance of reaching Jacksonville on time.

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.
DeltaDetails → SJU 07:30 → ATL 11:14DL 1763 1h 23m Atlanta ATL 12:37 → JAX 13:45DL 3024 6h 15m 97% 82%
DeltaDetails → SJU 07:35 → JFK 11:30DL 1854 2h 25m New York JFK 13:55 → JAX 16:44DL 1035 9h 09m 99% 81%
AmericanDetails → SJU 15:40 → CLT 19:39AA 783 2h 28m Charlotte CLT 22:07 → JAX 23:31AA 3078 7h 51m 99% 80%
AmericanDetails → SJU 05:58 → MIA 08:51AA 3089 3h 09m Miami MIA 12:00 → JAX 13:24AA 3955 · flown by Envoy 7h 26m 94% 79%
DeltaDetails → SJU 17:50 → ATL 21:49DL 1946 1h 05m Atlanta ATL 22:54 → JAX 00:09 +1DL 2276 6h 19m 94% 79%
DeltaDetails → SJU 14:42 → ATL 18:36DL 1882 2h 16m Atlanta ATL 20:52 → JAX 22:06DL 2189 7h 24m 99% 77%
JetBlueDetails → SJU 05:01 → JFK 08:54B6 2904 3h 10m New York JFK 12:04 → JAX 14:36B6 477 9h 35m 99% 76%
DeltaDetails → SJU 14:08 → BOS 18:19DL 1780 2h 16m Boston BOS 20:35 → JAX 23:39DL 5593 · flown by Republic 9h 31m 98% 75%
How these are worked out. Each flight’s odds are our forecast for that day; 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 Tue, Oct 6 (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