Ontario International Airport · ONT → SUS
No nonstop from Ontario to St Louis
This route last flew in August 2026. At its busiest it ran 1 nonstop flight a week.
Aero Charter
Who flew it, as last observed.
Did Ontario (ONT) stop flying to St Louis (SUS)?
Ontario (ONT) does not currently have a nonstop to St Louis (SUS). The route was last observed in August 2026, flown by Aero Charter, 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 29 other destinations.
Based on observed departures through August 2026. Airlines add and drop routes continually — confirm with the airline before you plan around this.