BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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SJC→ONT

Southwest Airlines San Jose, CA (SJC) to Ontario, CA (ONT) reliability

Among 1,316 scheduled Southwest Airlines flights from SJC to ONT, 83.4% arrived on time, 8.8% arrived at least 30 minutes late, and 0.1% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Marketing carrier: Southwest Airlines (WN) · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
83.4%arrived on time
8.8%30+ min late
0.1%cancelled
1,316scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late8.8%
60+ minutes late3.4%
Cancelled0.1%
Average arrival+0.5 mincompleted flights

What did Southwest Airlines SJC to ONT record?

Southwest Airlines completed 99.8% of its scheduled reportable SJC to ONT flights in the observation window. 83.4% of all scheduled flights arrived less than 15 minutes late, while 3.4% arrived at least an hour late.

What were Southwest Airlines SJC to ONT disruption rates?

For Southwest Airlines SJC-to-ONT flights, 8.8% arrived at least 30 minutes late, 0.1% were cancelled, and 0.1% were diverted.

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What was the Southwest Airlines SJC to ONT scheduled cohort?

The Southwest Airlines SJC-to-ONT cohort contained 1,316 scheduled flights; 1,314 completed, 1 were cancelled, and 1 were diverted.

Not a prediction.

This is a descriptive historical rate. Schedule changes, seasonal operations and current conditions may differ.