Direct flights from Denver to Ontario
54 nonstop flights a week on 4 airlines. Zero layovers — one hop from DEN to ONT.
Flight time: about 1h59m nonstop
Which days does it fly?
When does it fly?
Departure times in Denver local time, from flights observed over the last 7 days.
| Flight | Departs | Duration | Days |
|---|---|---|---|
| Alaska ASA1424 | 6:32a | 1h58m | Wed |
| Frontier FFT2907 | 9:12a | 1h56m | Wed, Sat |
| Frontier FFT2907 | 9:18a | 1h56m | Mon, Thu, Fri, Sun |
| Southwest SWA3265 | 9:20a | 2h2m | Sat |
| Southwest SWA4794 | 9:22a | 2h1m | Wed |
| Southwest SWA1596 | 9:22a | 2h3m | Mon, Thu, Fri |
| Frontier FFT2907 | 9:32a | 1h56m | Tue |
| Southwest SWA4794 | 9:39a | 2h1m | Tue, Sun |
| United UAL430 | 11:46a | 1h56m | Tue, Wed, Sat |
| United UAL430 | 12:00p | 1h54m | Fri, Sun |
| United UAL430 | 12:09p | 1h54m | Mon |
| Southwest SWA2050 | 1:01p | 2h | Thu–Fri |
| Southwest SWA1596 | 1:21p | 2h3m | Wed |
| Southwest SWA1596 | 1:35p | 2h8m | Tue |
| Southwest SWA1596 | 1:52p | 2h3m | Sun |
| Southwest SWA2050 | 1:52p | 2h16m | Mon |
| Southwest SWA3959 | 3:40p | 2h3m | Sat |
| United UAL430 | 4:18p | 1h53m | Thu |
| Southwest SWA4773 | 6:17p | 2h6m | Mon |
| Southwest SWA3775 | 6:50p | 2h6m | Sun |
| Southwest SWA4773 | 7:07p | 2h9m | Thu |
| United UAL2028 | 7:51p | 1h56m | Mon, Sat |
| Southwest SWA4341 | 7:58p | 2h1m | Sat |
| United UAL2028 | 7:59p | 1h54m | Wed |
| United UAL2028 | 8:08p | 1h57m | Tue, Sun |
| United UAL2028 | 8:22p | 1h56m | Thu |
| Southwest SWA141 | 8:51p | 1h58m | Tue |
| Southwest SWA1598 | 9:22p | 2h7m | Sun |
| Southwest SWA4773 | 9:35p | 2h5m | Fri |
| Southwest SWA1598 | 9:36p | 2h2m | Thu |
| Southwest SWA135 | 9:44p | 1h51m | Wed |
| Southwest SWA1598 | 9:46p | 1h59m | Fri |
| United UAL2028 | 9:56p | 1h54m | Fri |
| Southwest SWA1598 | 10:02p | 2h3m | Mon |
| Frontier FFT1261 | 10:44p | 1h55m | Wed, Thu, Sun |
| Frontier FFT1261 | 11:29p | 1h56m | Tue, Sat |
| Frontier FFT1261 | 11:43p | 1h58m | Mon |
| Frontier FFT1261 | 11:47p | 1h52m | Fri |
Southwest
UnitedThe route
One hop: DEN → ONTDrag to pan · scroll with ⌘/Ctrl to zoom · arrow keys when focused
Nonstop from Denver (DEN) to Ontario (ONT)
Denver International Airport (DEN) has 54 nonstop flights a week to Ontario (ONT), operated by Alaska, Frontier, Southwest and United. No layovers, no connections — one hop out of DEN and you're there.
This route flies every day of the week, so any travel day works. Route data updated September 2026 from observed departures.
Route data updated September 2026 from observed flight departures. Schedules change — always confirm with the airline before booking.
How long is the flight from Denver to Ontario?
The nonstop flight from Denver (DEN) to Ontario (ONT) takes about 1h59m in the air, based on recently observed nonstop departures.
How long does it take to drive from Denver to Ontario?
Driving from Denver to Ontario takes about 14h 26m, covering roughly 981 miles. The nonstop flight takes about 1h59m.