Direct flights from Ontario to St Louis
1 nonstop flight a week on 1 airline. Zero layovers — one hop from ONT to SUS.
Flight time: about 3h18m nonstop
Which days does it fly?
When does it fly?
Departure times in Ontario local time, from flights observed over the last 7 days.
| Flight | Departs | Duration | Days |
|---|---|---|---|
| Aero Charter GLT720 | 8:44p | 3h18m | Wed |
The route
One hop: ONT → SUSDrag to pan · scroll with ⌘/Ctrl to zoom · arrow keys when focused
Nonstop from Ontario (ONT) to St Louis (SUS)
Ontario International Airport (ONT) has 1 nonstop flight a week to St Louis (SUS), operated by Aero Charter. No layovers, no connections — one hop out of ONT and you're there.
This route flies on Wednesday — check the schedule grid above before you pick a travel day. Route data updated August 2026 from observed departures.
Route data updated August 2026 from observed flight departures. Schedules change — always confirm with the airline before booking.
How long is the flight from Ontario to St Louis?
The nonstop flight from Ontario (ONT) to St Louis (SUS) takes about 3h18m in the air, based on recently observed nonstop departures.