Cheap flights from Ontario to San Francisco

Direct flight: 585 km, ~41m from Ontario (ONT) to San Francisco (SFO).

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Live fares · ONT → SFO

Frequently asked questions

  • How long is the flight from Ontario to San Francisco?

    Direct flights from ONT to SFO cover approximately 585 km (364 miles), with an estimated flight time of 41m. Operating airlines: F9, UA.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.

Full route page: ONT → SFO Cheapest month to fly to San Francisco All flights from Ontario All flights to San Francisco Flights to USA Visa-free with USA passport F9 routes UA routes