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

United Airlines Denver, CO (DEN) to Ontario, CA (ONT) reliability

Among 853 scheduled United Airlines flights from DEN to ONT, 77.8% arrived on time, 14.7% arrived at least 30 minutes late, and 0.0% were cancelled during July 2025–June 2026.

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

HISTORICAL ROUTE SIGNALGenerally reliable
77.8%arrived on time
14.7%30+ min late
0.0%cancelled
853scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
30+ minutes late14.7%
60+ minutes late8.6%
Cancelled0.0%
Average arrival+9.9 mincompleted flights

What did United Airlines DEN to ONT record?

United Airlines completed 99.9% of its scheduled reportable DEN to ONT flights in the observation window. 77.8% of all scheduled flights arrived less than 15 minutes late, while 8.6% arrived at least an hour late.

What were United Airlines DEN to ONT disruption rates?

For United Airlines DEN-to-ONT flights, 14.7% arrived at least 30 minutes late, 0.0% were cancelled, and 0.1% were diverted.

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What was the United Airlines DEN to ONT scheduled cohort?

The United Airlines DEN-to-ONT cohort contained 853 scheduled flights; 852 completed, 0 were cancelled, and 1 were diverted.

Not a prediction.

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