American Airlines departures from Ontario, CA (ONT)

Among 3,627 scheduled American Airlines flights departing ONT, 79.0% arrived on time, 12.1% arrived at least 30 minutes late, and 2.1% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Origin and marketing-carrier cohort · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable

79.0%arrived on time

12.1%30+ min late

2.1%cancelled

3,627scheduled flights

Based on July 2025–June 2026; on time means arrival less than 15 minutes late.

30+ minutes late12.1%

60+ minutes late7.0%

Cancelled2.1%

Diverted0.6%

What does the American Airlines ONT sample show?

American Airlines completed 97.4% of its scheduled departures from ONT; 7.0% arrived at least one hour late and 0.6% were diverted.

What were American Airlines at ONT disruption rates?

For American Airlines departures from ONT, 12.1% arrived at least 30 minutes late, 2.1% were cancelled, and 0.6% were diverted.

Compare all airlines at ONT

How large was the American Airlines cohort at ONT?

The American Airlines cohort at ONT contained 3,627 scheduled flights, including 3,532 completed flights, 75 cancellations, and 20 diversions.