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

Southwest Airlines Dallas, TX (DAL) to Ontario, CA (ONT) reliability

Among 403 scheduled Southwest Airlines flights from DAL to ONT, 64.5% arrived on time, 19.9% arrived at least 30 minutes late, and 1.5% 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 SIGNALVariable
64.5%arrived on time
19.9%30+ min late
1.5%cancelled
403scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late19.9%
60+ minutes late9.4%
Cancelled1.5%
Average arrival+15.5 mincompleted flights

What did Southwest Airlines DAL to ONT record?

Southwest Airlines completed 98.5% of its scheduled reportable DAL to ONT flights in the observation window. 64.5% of all scheduled flights arrived less than 15 minutes late, while 9.4% arrived at least an hour late.

What were Southwest Airlines DAL to ONT disruption rates?

For Southwest Airlines DAL-to-ONT flights, 19.9% arrived at least 30 minutes late, 1.5% were cancelled, and 0.0% were diverted.

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What was the Southwest Airlines DAL to ONT scheduled cohort?

The Southwest Airlines DAL-to-ONT cohort contained 403 scheduled flights; 397 completed, 6 were cancelled, and 0 were diverted.

Not a prediction.

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