How often are ONT to PHX flights on time?

Flights from Ontario (ONT) to Phoenix (PHX) arrive on time 88% of the time across 18,372 flights of official data.

Which airline is most reliable on the ONT to PHX route?

American Airlines has the best on-time record on this route at 89% across 8,196 flights.

Route reliability

Flights from Ontario to Phoenix arrive on time 88% of the time across 18,372 flights. Here’s how each airline really performs.

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On-time rate

18,372 flights

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg PHX → ONT.

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Score real ONT–PHX flights on reliability, weather, and connection safety — not just price.

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