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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, Oct 6th 2025
From $115

Frontier Airlines
F9 2678 (Direct)
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Fly on Wed, Sep 10th 2025
From $151

Frontier Airlines
F9 1230 (1 Transfer)
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Fly on Sat, Nov 29th 2025
From $184

United Airlines
UA 1958 (Direct)
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