tailodds FORECAST
Tickets
Any day
Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · connections flying that day

Sun, Oct 11: one nonstop, OO 3001 at 16:56, with a 17% chance of arriving 15+ min late.

Nonstops that day

All 2 nonstops →
OO 3001 SkyWest BOI 16:56 ONT 18:24 17% 10% 0.7% no record
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.
DeltaDetails → BOI 08:25 → SLC 09:44DL 3607 · flown by SkyWest 1h 33m Salt Lake City SLC 11:17 → ONT 12:16DL 1173 4h 51m 96% 85%
UnitedDetails → BOI 06:30 → DEN 08:29UA 1782 2h 56m Denver DEN 11:25 → ONT 12:47UA 430 7h 17m 98% 80%
AmericanDetails → BOI 08:04 → PHX 09:30AA 6439 · flown by SkyWest 1h 10m Phoenix PHX 10:40 → ONT 12:06AA 2661 5h 02m 100% 79%
DeltaDetails → 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% 78%
UnitedDetails → BOI 06:30 → SFO 07:30UA 4678 · flown by SkyWest 3h 10m San Francisco SFO 10:40 → ONT 12:12UA 2661 6h 42m 98% 73%
UnitedDetails → BOI 14:00 → SFO 14:58UA 4661 · flown by SkyWest 3h 55m San Francisco SFO 18:53 → ONT 20:30UA 2478 7h 30m 100% 72%
DeltaDetails → BOI 18:42 → SLC 19:57DL 2920 3h 02m Salt Lake City SLC 22:59 → ONT 23:48DL 1614 6h 06m 98% 71%
AlaskaDetails → BOI 13:06 → SEA 13:40AS 2235 · flown by Horizon 1h 46m Seattle SEA 15:26 → ONT 18:07AS 592 6h 01m 100% 70%
Tight connection: often missed
AlaskaDetails → BOI 20:28 → PDX 20:46AS 2118 · flown by Horizon 48m Portland PDX 21:34 → ONT 00:05 +1AS 534 4h 37m 67% 54%
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 Sun, Oct 11 (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