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Any day
Wednesday, October 7 · our forecast odds · issued Mon 6:00 AM ET · connections flying that day

Wed, Oct 7: no forecasts for this route’s flights; their 12-month records are below.

Nonstops that day

All 1 nonstop →
AS 2026 Alaska flown by Horizon no forecast: 12-month record ONT 16:18 BOI 19:13 21% 8% 0.0% 79%

Best connections that day, one ticket

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.

DeltaDetails → ONT 06:00 → SLC 08:48DL 2708 2h 12m Salt Lake City SLC 11:00 → BOI 12:16DL 2095 5h 16m 99% 91%
UnitedDetails → ONT 05:00 → DEN 08:20UA 2446 3h 16m Denver DEN 11:36 → BOI 13:35UA 2255 7h 35m 99% 90%
DeltaDetails → ONT 06:20 → SEA 09:15DL 3816 · flown by SkyWest 3h 15m Seattle SEA 12:30 → BOI 15:11DL 3959 · flown by SkyWest 7h 51m 100% 90%
UnitedDetails → ONT 13:18 → DEN 16:38UA 1263 3h 47m Denver DEN 20:25 → BOI 22:37UA 5923 · flown by SkyWest 8h 19m 98% 89%
AmericanDetails → ONT 06:11 → PHX 07:30AA 1194 2h 48m Phoenix PHX 10:18 → BOI 13:42AA 4080 · flown by Envoy 6h 31m 97% 88%
AlaskaDetails → ONT 17:32 → PDX 19:49AS 2456 · flown by Horizon 1h 48m Portland PDX 21:37 → BOI 23:56AS 447 5h 24m 98% 87%
DeltaDetails → 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 96% 86%
AlaskaDetails → ONT 07:12 → PDX 09:42AS 544 1h 26m Portland PDX 11:08 → BOI 13:27AS 797 5h 15m 96% 84%
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 Wed, Oct 7 (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