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San Francisco ✈ Ontario

Cheapest airfares from San Francisco to Ontario

Search for flight deals to Ontario

*All prices in AUD, prices may fluctuate slightly from the advertised price.
Fly on Mon, Aug 4th 2025
From $116

United Airlines
UA 1697 (Direct)
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Fly on Mon, Jul 28th 2025
From $186

Frontier Airlines
F9 2678 (Direct)
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