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Tuesday, October 6 · our forecast odds · issued Mon 4:00 AM ET · connections flying that day

Tomorrow: United via Denver, leaving 05:45, is the safest bet: 87% chance of reaching San Juan on time.

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 (San Juan is 1 h ahead of Dallas-Fort Worth). Layovers up to 4 hours. Pick a connection for its 12-month details.
UnitedDetails → DFW 05:45 → DEN 06:53UA 773 2h 50m Denver DEN 09:43 → SJU 17:38UA 1339 10h 53m 100% 87%
DeltaDetails → DFW 05:20 → ATL 08:34DL 401 1h 11m Atlanta ATL 09:45 → SJU 13:32DL 1882 7h 12m 98% 87%
DeltaDetails → DFW 06:45 → ATL 09:59DL 893 3h 01m Atlanta ATL 13:00 → SJU 16:39DL 1946 8h 54m 99% 87%
AmericanDetails → DFW 05:00 → MIA 08:55AA 3189 2h 44m Miami MIA 11:39 → SJU 14:24AA 1613 8h 24m 100% 86%
DeltaDetails → DFW 12:17 → ATL 15:35DL 961 3h 10m Atlanta ATL 18:45 → SJU 22:30DL 1861 9h 13m 100% 86%
UnitedDetails → DFW 09:46 → IAH 11:03UA 1586 4h 00m Houston IAH 15:03 → SJU 20:38UA 701 9h 52m 98% 86%
AmericanDetails → DFW 04:47 → CLT 08:21AA 1091 2h 42m Charlotte CLT 11:03 → SJU 14:50AA 783 9h 03m 98% 84%
AmericanDetails → DFW 07:10 → MIA 11:11AA 3290 3h 34m Miami MIA 14:45 → SJU 17:21AA 967 9h 11m 99% 84%
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