tailodds FORECAST
Tickets
Any day
Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Mon 12:00 PM ET · connections flying that day

Fri, Oct 9: no forecasts for this route’s flights; their 12-month records are below.

Nonstops that day

All 1 nonstop →
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.
SouthwestDetails → BOI 05:25 → PHX 06:30WN 4470 1h 20m Phoenix PHX 07:50 → ONT 09:05WN 759 4h 40m 100% 93%
SouthwestDetails → BOI 06:30 → SMF 06:55WN 715 2h 15m Sacramento SMF 09:10 → ONT 10:30WN 3805 5h 00m 100% 93%
SouthwestDetails → BOI 06:00 → LAS 06:45WN 701 2h 20m Las Vegas LAS 09:05 → ONT 10:10WN 4179 5h 10m 100% 89%
DeltaDetails → BOI 13:05 → SLC 14:18DL 1442 1h 17m Salt Lake City SLC 15:35 → ONT 16:30DL 4443 · flown by SkyWest 4h 25m 97% 87%
DeltaDetails → BOI 08:25 → SLC 09:44DL 3607 · flown by SkyWest 1h 37m Salt Lake City SLC 11:21 → ONT 12:10DL 3172 4h 45m 97% 86%
DeltaDetails → BOI 06:00 → SLC 07:11DL 2173 49m Salt Lake City SLC 08:00 → ONT 08:47DL 1302 3h 47m 92% 86%
AlaskaDetails → BOI 05:57 → PDX 06:17AS 1566 1h 19m Portland PDX 07:36 → ONT 09:56AS 1449 4h 59m 97% 85%
UnitedDetails → BOI 06:30 → DEN 08:29UA 1782 2h 56m Denver DEN 11:25 → ONT 12:47UA 430 7h 17m 99% 85%
Tight connection: often missed
SouthwestDetails → BOI 19:20 → SMF 19:45WN 717 1h 10m Sacramento SMF 20:55 → ONT 22:20WN 4984 4h 00m 70% 47%
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 Fri, Oct 9 (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