How often are SMF to ONT flights on time?

Flights from Sacramento (SMF) to Ontario (ONT) arrive on time 86% of the time across 11,997 flights of official data.

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

Frontier Airlines has the best on-time record on this route at 93% across 305 flights.

Route reliability

Flights from Sacramento to Ontario arrive on time 86% of the time across 11,997 flights. Here’s how each airline really performs.

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On-time rate

11,997 flights

Airline	On-time	Flights
Frontier Airlines	93%	305
Southwest Airlines	86%	11,692

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

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

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