Ontario International Airport · ONT → SAN
No nonstop from Ontario to San Diego
This route last flew in September 2026. At its busiest it ran 1 nonstop flight a week.
Southwest
Who flew it, as last observed.
Did Ontario (ONT) stop flying to San Diego (SAN)?
Ontario (ONT) does not currently have a nonstop to San Diego (SAN). The route was last observed in September 2026, flown by Southwest, running up to 1 flight a week at its busiest.
Routes come and go — seasonal services in particular return, and airlines add back capacity they cut. If it resumes it will show up on this page. In the meantime, Ontario International Airport still flies nonstop to 28 other destinations.
Based on observed departures through September 2026. Airlines add and drop routes continually — confirm with the airline before you plan around this.