United Airlines departures from Ontario, CA (ONT)

Arrival outcomes for 2,516 United Airlines marketed flights departing ONT in July 2025–June 2026.

HISTORICAL ROUTE SIGNALGenerally reliable

78.8%arrived on time

13.5%30+ min late

0.4%cancelled

2,516scheduled flights

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

30+ minutes late13.5%

60+ minutes late7.1%

Cancelled0.4%

Diverted0.3%

Read this comparison in context

This page isolates one marketing carrier at one origin airport. Compare it with the parent ONT report before drawing a conclusion: airlines can serve different destinations and departure times from the same airport.

Compare all airlines at ONT