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

Mon, Oct 12: Delta via Salt Lake City, leaving 09:55, is the safest bet: 84% chance of reaching Long Beach on time.

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Long Beach 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 →	SFO 09:55 → SLC 12:44DL 920	2h 21m Salt Lake City	SLC 15:05 → LGB 16:06DL 3793 · flown by SkyWest	6h 11m	96%	84%
Delta Details →	SFO 05:50 → SLC 08:40DL 1331	2h 25m Salt Lake City	SLC 11:05 → LGB 11:59DL 1116	6h 09m	98%	83%
Alaska Details →	SFO 13:45 → SEA 15:44AS 656	2h 31m Seattle	SEA 18:15 → LGB 20:55AS 1310	7h 10m	96%	70%
Alaska Details →	SFO 06:03 → SEA 08:13AS 620	3h 51m Seattle	SEA 12:04 → LGB 14:36AS 717	8h 33m	100%	65%

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 Mon, Oct 12 (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