Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Sun 12:00 AM ET · connections flying that day

Sat, Oct 10: one nonstop, WN 1688 at 08:18, with a 6% chance of arriving 15+ min late.

Nonstops that day

All 1 nonstop →


WN 1688 Southwest	HOU 08:18	ONT 09:50	6%	1%	0.6%	no record

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Ontario on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Ontario is 2 h behind Houston). Layovers up to 4 hours. Pick a connection for its 12-month details.


Southwest Details →	HOU 11:50 → DAL 13:00WN 22	3h 58m Dallas	DAL 16:58 → ONT 18:20WN 1806	8h 30m	99%	76%
Delta Details →	HOU 11:00 → ATL 14:04DL 1509	3h 01m Atlanta	ATL 17:05 → ONT 18:30DL 2891	9h 30m	98%	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