Roundtrip Airfare Flight: To/From San Francisco & Ontario or OC/Anaheim CA $57 (Travel Select Dates May-Aug 2025)

United Airlines and Expedia have round trip airfares travelling to and from San Francisco (SFO) and Ontario (ONT) or Santa Ana/Anaheim (SNA) for $57 nonstop. Or choose one-way for $29 using the same dates below. These are basic economy fares. On United you may only have a personal item. There is no seat selection, no carry-on and no change. If you are travelling with children, you will be seated together as per United's policy. Travel Availability: Departs ONT: May 1-3, 6-8, 10, 13-15, 20-22, 24-25, 27-29, 31; June 3-8, 10-13, 15, 17-18, 20-21, 24-30; July 1-2, 4, 8-12, 14-18, 21-26, 28-31; Aug 1-12