Today: only flights still to leave (it’s 6:53 pm at Santa Rosa); 2 already left

Monday, October 5 · our forecast odds · issued Mon 8:00 PM ET · connections flying that day

Today: Alaska via Portland, leaving 19:18, is the safest bet: 56% chance of reaching Ontario on time; the tightest one-ticket connections make it only 72% of the time.

Best connections today, one ticket

Ranked by chance you reach Ontario on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival. Layovers up to 4 hours. Pick a connection for its 12-month details.


Tight connection: often missed
Alaska Details →	STS 19:18 → PDX 20:37AS 3371 · flown by SkyWest	57m Portland	PDX 21:34 → ONT 00:00 +1AS 534	4h 42m	72%	56%

No one-ticket connection fits with layovers up to 4 hours that day. Try any airlines.

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 Mon, Oct 5 (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