Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · connections flying that day

Sun, Oct 11: one nonstop, WN 3276 at 14:45, with a 24% chance of arriving 15+ min late.

Nonstops that day

All 1 nonstop →


WN 3276 Southwest	ONT 14:45	HOU 19:57	24%	8%	0.6%	no record

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	ONT 10:31 → DFW 15:43AA 1820	2h 45m Dallas-Fort Worth	DFW 18:28 → HOU 19:48AA 3391 · flown by Envoy	7h 17m	95%	64%
Delta Details →	ONT 11:48 → ATL 19:15DL 665	1h 30m Atlanta	ATL 20:45 → HOU 21:51DL 2051	8h 03m	93%	62%

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 Sun, Oct 11 (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