tailodds FORECAST
Tickets
Any day
Wednesday, October 7 · our forecast odds · issued Mon 6:00 AM ET · connections flying that day

Wed, Oct 7 looks like a normal day here: all 2 nonstops are 12–18% likely to arrive 15+ min late.

Nonstops that day

All 2 nonstops →
DL 1780 Delta Flight history → BOS 08:51 SJU 12:58 12% 2% 0.8% 78%
B6 861 JetBlue Flight history → BOS 07:59 SJU 12:15 18% 3% 0.7% 75%

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.
DeltaDetails → BOS 05:30 → ATL 08:21DL 2242 1h 24m Atlanta ATL 09:45 → SJU 13:32DL 1882 8h 02m 100% 91%
UnitedDetails → BOS 05:45 → IAD 07:23UA 1734 1h 11m Dulles IAD 08:34 → SJU 12:34UA 2021 6h 49m 99% 90%
DeltaDetails → BOS 06:45 → ATL 09:34DL 695 3h 26m Atlanta ATL 13:00 → SJU 16:39DL 1946 9h 54m 100% 89%
DeltaDetails → BOS 12:30 → ATL 15:21DL 2779 3h 24m Atlanta ATL 18:45 → SJU 22:30DL 1861 10h 00m 100% 89%
AmericanDetails → BOS 06:05 → CLT 08:30AA 418 2h 33m Charlotte CLT 11:03 → SJU 14:50AA 783 8h 45m 99% 87%
AmericanDetails → BOS 06:05 → PHL 07:50AA 1540 1h 30m Philadelphia PHL 09:20 → SJU 13:33AA 614 7h 28m 97% 86%
AmericanDetails → BOS 05:10 → MIA 08:38AA 1418 2h 27m Miami MIA 11:05 → SJU 13:50AA 1613 8h 40m 100% 84%
UnitedDetails → BOS 06:05 → EWR 07:29UA 1833 2h 17m Newark EWR 09:46 → SJU 13:45UA 1556 7h 40m 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 Wed, Oct 7 (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