tailodds FORECAST
Tickets
Any day
Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Sun 4:00 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 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

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.
SouthwestDetails → ONT 05:30 → LAS 06:35WN 3150 2h 00m Las Vegas LAS 08:35 → BOI 11:25WN 2192 4h 55m 100% 91%
DeltaDetails → ONT 06:00 → SLC 08:48DL 2708 2h 12m Salt Lake City SLC 11:00 → BOI 12:14DL 1442 5h 14m 98% 88%
UnitedDetails → ONT 05:00 → DEN 08:20UA 2446 3h 16m Denver DEN 11:36 → BOI 13:35UA 2255 7h 35m 99% 87%
SouthwestDetails → ONT 05:15 → PHX 06:30WN 864 2h 10m Phoenix PHX 08:40 → BOI 11:45WN 4601 5h 30m 96% 87%
AlaskaDetails → ONT 14:05 → SEA 16:45AS 567 3h 14m Seattle SEA 19:59 → BOI 22:24AS 2034 · flown by Horizon 7h 19m 100% 85%
AmericanDetails → ONT 06:11 → PHX 07:30AA 1194 2h 40m Phoenix PHX 10:10 → BOI 13:27AA 4948 · flown by SkyWest 6h 16m 96% 84%
DeltaDetails → ONT 17:10 → SLC 20:03DL 4443 · flown by SkyWest 2h 47m Salt Lake City SLC 22:50 → BOI 00:05 +1DL 2111 5h 55m 98% 81%
AlaskaDetails → ONT 12:04 → SEA 14:44AS 654 2h 56m Seattle SEA 17:40 → BOI 20:07AS 2109 · flown by Horizon 7h 03m 100% 81%
Tight connection: often missed
UnitedDetails → ONT 18:39 → SFO 20:07UA 5624 · flown by SkyWest 52m San Francisco SFO 20:59 → BOI 23:55UA 6027 · flown by SkyWest 4h 16m 71% 57%
AlaskaDetails → ONT 14:05 → SEA 16:45AS 567 55m Seattle SEA 17:40 → BOI 20:07AS 2109 · flown by Horizon 5h 02m 69% 56%
SouthwestDetails → ONT 16:40 → LAS 17:45WN 2213 50m Las Vegas LAS 18:35 → BOI 21:15WN 1102 3h 35m 50% 28%
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