Tuesday, October 6 · our forecast odds · issued Sun 11:00 PM ET · connections flying that day

Tomorrow: no forecasts for this route’s flights; their 12-month records are below.

Nonstops that day


AS 2025 Alaska flown by Horizon no forecast: 12-month record	BOI 14:31	ONT 15:38	18%	6%	1.9%	82%

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 1 h behind Boise). Layovers up to 4 hours. Pick a connection for its 12-month details.


Delta Details →	BOI 06:00 → SLC 07:11DL 2173	3h 58m Salt Lake City	SLC 11:09 → ONT 12:12DL 1173	7h 12m	100%	94%
Delta Details →	BOI 18:42 → SLC 19:57DL 2920	3h 02m Salt Lake City	SLC 22:59 → ONT 23:48DL 1614	6h 06m	99%	90%
United Details →	BOI 06:30 → DEN 08:29UA 1782	2h 56m Denver	DEN 11:25 → ONT 12:47UA 430	7h 17m	99%	89%
American Details →	BOI 06:21 → DFW 10:34AA 1107	1h 50m Dallas-Fort Worth	DFW 12:24 → ONT 13:48AA 2635	8h 27m	97%	87%
Delta Details →	BOI 10:35 → SEA 11:26DL 3750 · flown by SkyWest	3h 04m Seattle	SEA 14:30 → ONT 17:21DL 4031 · flown by SkyWest	7h 46m	96%	83%
Delta Details →	BOI 19:25 → SEA 19:32DL 4127 · flown by SkyWest	1h 53m Seattle	SEA 21:25 → ONT 23:53DL 3884 · flown by SkyWest	5h 28m	95%	82%
Alaska Details →	BOI 13:29 → PDX 13:47AS 2209 · flown by Horizon	1h 12m Portland	PDX 14:59 → ONT 17:19AS 1704	4h 50m	96%	82%
Alaska Details →	BOI 05:59 → PDX 06:25AS 782	53m Portland	PDX 07:18 → ONT 09:36AS 720	4h 37m	93%	80%

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 Tue, Oct 6 (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