tailodds FORECAST
Tickets
Any day
Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Sun 8:00 PM ET · connections flying that day

Sat, Oct 10: Delta via Atlanta, leaving 11:45, is the safest bet: 76% chance of reaching San Juan on time.

Nonstops that day

All 1 nonstop →
UA 1339 United Flight history → DEN 09:43 SJU 17:38 15% 3% 0.6% 84%

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 2 h ahead of Denver). Layovers up to 4 hours. Pick a connection for its 12-month details.
DeltaDetails → DEN 00:40 → ATL 05:42DL 302 2h 27m Atlanta ATL 08:09 → SJU 11:52DL 1930 9h 12m 99% 85%
UnitedDetails → DEN 00:05 → IAD 05:28UA 1924 3h 06m Dulles IAD 08:34 → SJU 12:34UA 2021 10h 29m 100% 85%
DeltaDetails → DEN 00:59 → DTW 05:48DL 1096 2h 47m Detroit DTW 08:35 → SJU 13:11DL 1913 10h 12m 97% 81%
UnitedDetails → DEN 07:42 → IAH 11:15UA 1720 3h 48m Houston IAH 15:03 → SJU 20:38UA 701 10h 56m 100% 81%
DeltaDetails → DEN 05:45 → ATL 10:44DL 341 2h 16m Atlanta ATL 13:00 → SJU 16:39DL 1946 8h 54m 98% 78%
DeltaDetails → DEN 11:45 → ATL 16:49DL 346 1h 56m Atlanta ATL 18:45 → SJU 22:29DL 1861 8h 44m 97% 76%
UnitedDetails → DEN 05:00 → IAH 08:32UA 320 1h 31m Houston IAH 10:03 → SJU 15:42UA 1192 8h 42m 99% 75%
UnitedDetails → DEN 00:12 → EWR 05:42UA 1745 2h 18m Newark EWR 08:00 → SJU 12:04UA 2143 9h 52m 99% 74%
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 Sat, Oct 10 (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