Today: only flights still to leave (it’s 3:59 am at Ontario)

Tuesday, October 6 · our forecast odds · issued Tue 5:00 AM ET · connections flying that day

Today looks like a normal day here: all 2 nonstops are 10–15% likely to arrive 15+ min late.

Nonstops today


OO 3215 SkyWest	ONT 16:45	BOI 20:01	10%	4%	0.6%	no record
QX 2406 Horizon	ONT 16:39	BOI 19:59	15%	4%	1.2%	no record

Best connections today, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Boise on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Boise is 1 h ahead of Ontario). Layovers up to 4 hours. Pick a connection for its 12-month details.


United Details →	ONT 05:00 → DEN 08:20UA 2446	3h 15m Denver	DEN 11:35 → BOI 13:34UA 2255	7h 34m	99%	90%
American Details →	ONT 06:11 → PHX 07:30AA 1194	2h 40m Phoenix	PHX 10:10 → BOI 13:23AA 4080 · flown by Envoy	6h 12m	97%	88%
Delta Details →	ONT 06:28 → SLC 09:19DL 2708	1h 41m Salt Lake City	SLC 11:00 → BOI 12:14DL 2095	4h 46m	98%	87%
United Details →	ONT 13:18 → DEN 16:38UA 1263	3h 47m Denver	DEN 20:25 → BOI 22:37UA 5923 · flown by SkyWest	8h 19m	97%	86%
Alaska Details →	ONT 12:04 → SEA 14:44AS 654	2h 56m Seattle	SEA 17:40 → BOI 20:15AS 2109 · flown by Horizon	7h 11m	100%	82%
Delta Details →	ONT 11:59 → SEA 14:51DL 4070 · flown by SkyWest	1h 19m Seattle	SEA 16:10 → BOI 18:46DL 3688 · flown by SkyWest	5h 47m	93%	81%
Delta Details →	ONT 06:20 → SEA 09:15DL 3816 · flown by SkyWest	3h 52m Seattle	SEA 13:07 → BOI 15:43DL 3959 · flown by SkyWest	8h 23m	100%	81%
American Details →	ONT 16:29 → PHX 17:55AA 2859	1h 37m Phoenix	PHX 19:32 → BOI 22:53AA 6332 · flown by SkyWest	5h 24m	92%	81%
Tight connection: often missed
Alaska Details →	ONT 14:12 → SEA 16:52AS 575	48m Seattle	SEA 17:40 → BOI 20:15AS 2109 · flown by Horizon	5h 03m	62%	51%

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