Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Sun 12:00 AM ET · connections flying that day

Sat, Oct 10: United via Denver, leaving 05:00, is the safest bet: 86% chance of reaching Baltimore on time.

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Baltimore on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Baltimore is 3 h ahead of Ontario). Layovers up to 4 hours. Pick a connection for its 12-month details.


United Details →	ONT 05:00 → DEN 08:20UA 2446	1h 26m Denver	DEN 09:46 → BWI 15:17UA 1362	7h 17m	98%	86%
United Details →	ONT 06:49 → ORD 12:53UA 2226	1h 51m Chicago	ORD 14:44 → BWI 17:48UA 2737	7h 59m	97%	77%
American Details →	ONT 08:24 → DFW 13:36AA 2893	3h 44m Dallas-Fort Worth	DFW 17:20 → BWI 21:38AA 2251	10h 14m	96%	59%

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 Sat, Oct 10 (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