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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 Sat, Jan 17th 2026
From $164

Frontier Airlines
F9 2678 (Direct)
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Fly on Sun, Apr 5th 2026
From $208

United Airlines
UA 552 (Direct)
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Fly on Mon, Jun 1st 2026
From $279

United Airlines
UA 1561 (Direct)
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