How often are ONT to SMF flights on time?

Flights from Ontario (ONT) to Sacramento (SMF) arrive on time 87% of the time across 11,987 flights of official data.

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

Frontier Airlines has the best on-time record on this route at 94% across 305 flights.

Route reliability

Flights from Ontario to Sacramento arrive on time 87% of the time across 11,987 flights. Here’s how each airline really performs.

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On-time rate

11,987 flights

Airline	On-time	Flights
Frontier Airlines	94%	305
Southwest Airlines	87%	11,682

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

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

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