Roundtrip Flights from San Francisco to Ontario from $57.00

Expedia is offering Roundtrip Nonstop Flights from San Francisco (SFO) to Ontario (ONT) from $57.00. Valid for select dates Departs (SFO): May 3, 6, 7, 12-14, 19-22, 24, 26-31; June 2-7, 9-12, 14, 16-19, 21, 23-25, 27-28; July 1-2, 4, 7-11, 15-19, 21, 23-24, 26, 29-31; Aug Dec 1-12 and Returns: May 1-3, 6, 7, 13-14, 20-21, 24, 28, 31; June 3-5, 7, 10-11, 17-18, 21, 24, 27, 30; July 1-2, 4, 8-10, 12, 14-18, 22, 23, 25, 26, 28-31; Aug 1-12. Exclusions apply.

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