BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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AIRLINE × ROUTE REPORT
LAS→ONT

Southwest Airlines Las Vegas, NV (LAS) to Ontario, CA (ONT) reliability

Among 1,755 scheduled Southwest Airlines flights from LAS to ONT, 72.6% arrived on time, 16.5% arrived at least 30 minutes late, and 0.7% 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 SIGNALGenerally reliable
72.6%arrived on time
16.5%30+ min late
0.7%cancelled
1,755scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late16.5%
60+ minutes late7.1%
Cancelled0.7%
Average arrival+7.9 mincompleted flights

What did Southwest Airlines LAS to ONT record?

Southwest Airlines completed 99.2% of its scheduled reportable LAS to ONT flights in the observation window. 72.6% of all scheduled flights arrived less than 15 minutes late, while 7.1% arrived at least an hour late.

What were Southwest Airlines LAS to ONT disruption rates?

For Southwest Airlines LAS-to-ONT flights, 16.5% arrived at least 30 minutes late, 0.7% were cancelled, and 0.1% were diverted.

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What was the Southwest Airlines LAS to ONT scheduled cohort?

The Southwest Airlines LAS-to-ONT cohort contained 1,755 scheduled flights; 1,741 completed, 13 were cancelled, and 1 were diverted.

Not a prediction.

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