Direct flights from Ontario to Denver
54 nonstop flights a week on 3 airlines. Zero layovers — one hop from ONT to DEN.
Flight time: about 1h50m 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 |
|---|---|---|---|
| United UAL2446 | 5:02a | 1h49m | Mon |
| United UAL2446 | 5:07a | 1h54m | Wed, Thu, Fri, Sun |
| United UAL2446 | 5:19a | 1h51m | Tue |
| Southwest SWA3144 | 5:50a | 1h48m | Tue |
| Frontier FFT1500 | 6:02a | 1h52m | Tue, Sat |
| Southwest SWA3144 | 6:02a | 1h52m | Mon, Wed, Fri |
| Frontier FFT1500 | 6:10a | 1h50m | Mon, Wed, Thu, Sun |
| Southwest SWA3144 | 6:11a | 1h49m | Thu, Sat, Sun |
| Frontier FFT1500 | 6:18a | 1h53m | Fri |
| United UAL2446 | 6:42a | 1h49m | Sat |
| Southwest SWA3145 | 8:12a | 1h48m | Mon, Fri |
| Southwest SWA3145 | 8:19a | 1h46m | Thu, Sat |
| Southwest SWA3145 | 8:28a | 1h47m | Tue–Wed |
| Southwest SWA3145 | 9:00a | 1h48m | Sun |
| Frontier FFT2908 | 10:52a | 1h47m | Mon–Tue |
| Frontier FFT2908 | 10:56a | 1h44m | Wed, Sun |
| Frontier FFT2908 | 11:09a | 1h58m | Fri |
| Frontier FFT2908 | 11:20a | 1h50m | Thu |
| Southwest SWA3062 | 12:20p | 1h52m | Sun |
| Frontier FFT2908 | 12:25p | 1h48m | Sat |
| Southwest SWA3146 | 12:55p | 1h52m | Thu |
| Southwest SWA3146 | 1:07p | 1h51m | Mon |
| United UAL1263 | 1:39p | 1h50m | Mon, Wed, Thu, Fri, Sun |
| Southwest SWA3146 | 1:41p | 1h51m | Tue |
| United UAL1263 | 1:50p | 1h53m | Tue |
| United UAL1263 | 1:56p | 1h48m | Sat |
| Southwest SWA3146 | 2:05p | 1h44m | Wed |
| Southwest SWA3146 | 2:31p | 1h48m | Fri |
| Southwest SWA3147 | 2:43p | 1h50m | Fri |
| Southwest SWA2687 | 3:04p | 1h46m | Tue |
| Southwest SWA3147 | 3:10p | 1h48m | Mon, Thu |
| Southwest SWA670 | 3:27p | 1h52m | Sun |
| Southwest SWA3147 | 3:35p | 1h55m | Sat |
Southwest
UnitedThe route
One hop: ONT → DENDrag to pan · scroll with ⌘/Ctrl to zoom · arrow keys when focused
Nonstop from Ontario (ONT) to Denver (DEN)
Ontario International Airport (ONT) has 54 nonstop flights a week to Denver (DEN), operated by Frontier, Southwest and United. No layovers, no connections — one hop out of ONT and you're there.
This route flies every day of the week, so any travel day works. Route data updated July 2026 from observed departures.
Route data updated July 2026 from observed flight departures. Schedules change — always confirm with the airline before booking.
How long is the flight from Ontario to Denver?
The nonstop flight from Ontario (ONT) to Denver (DEN) takes about 1h50m in the air, based on recently observed nonstop departures.
How long does it take to drive from Ontario to Denver?
Driving from Ontario to Denver takes about 14h 26m, covering roughly 981 miles. The nonstop flight takes about 1h50m.