Thursday, October 8 · typical odds for a Thursday (too early for a weather forecast) · issued Sun 12:00 PM ET · 4 nonstops

Thu, Oct 8: WN 184 at 08:12 is the safest bet, 5% chance of being 15+ min late; the others run 12–17%.

Safest bet that day WN 184 PHX 08:12 → BOI 11:27 · 5% chance 15+ min late Riskiest WN 577 PHX 15:06 → BOI 18:22 · 17% chance 15+ min late

Every nonstop on Thu, Oct 8

12-month record →

Ranked by the chance of arriving 15+ minutes late (typical odds: the weather this date has had in past years), with each flight’s on-time record over Aug 2025 – Jul 2026 beside it. Times are local. Pick a flight for its forecast. Click a column to sort.


WN 184 Southwest	PHX 08:12	BOI 11:27	5%	1%	0.5%	no record
AA 4080 American flown by Envoy Flight history →	PHX 10:07	BOI 13:21	12%	3%	0.6%	71%
OO 4919 SkyWest	PHX 13:39	BOI 17:00	12%	5%	0.5%	no record
WN 577 Southwest	PHX 15:06	BOI 18:22	17%	4%	0.6%	no record

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 Thu, Oct 8 (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