Direct flights from Ontario to Denver
53 nonstop flights a week on 3 airlines. Zero layovers — one hop from ONT to DEN.
Flight time: about 1h46m 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 | 5:03a | 1h45m | Sat |
| United UAL2446 | 5:07a | 1h45m | Mon, Tue, Thu, Fri, Sun |
| United UAL2446 | 5:16a | 1h44m | Wed |
| Frontier FFT1500 | 6:01a | 1h24m | Tue |
| Frontier FFT1500 | 6:14a | 1h46m | Sat |
| Frontier FFT1500 | 6:20a | 1h46m | Mon, Wed, Thu, Fri |
| Southwest SWA319 | 6:31a | 1h50m | Thu–Fri |
| Southwest SWA319 | 6:35a | 1h54m | Mon |
| Southwest SWA3539 | 6:56a | 1h56m | Sun |
| Southwest SWA4604 | 7:12a | 1h45m | Wed |
| Southwest SWA3074 | 7:13a | 1h46m | Sat |
| Southwest SWA3074 | 7:18a | 1h41m | Tue |
| Frontier FFT1500 | 7:44a | 1h43m | Sun |
| Southwest SWA3075 | 8:19a | 1h51m | Mon, Thu, Fri |
| Southwest SWA2239 | 9:24a | 1h47m | Sat |
| Southwest SWA1082 | 11:09a | 1h52m | Tue |
| Southwest SWA1082 | 11:21a | 1h58m | Wed |
| Southwest SWA1428 | 11:29a | 1h41m | Sun |
| Frontier FFT2908 | 11:50a | 1h44m | Mon, Wed, Fri, Sun |
| Frontier FFT2908 | 12:05p | 1h47m | Thu |
| Southwest SWA3076 | 12:33p | 1h53m | Mon |
| Frontier FFT2908 | 12:43p | 1h44m | Sat |
| Southwest SWA3076 | 1:07p | 1h51m | Thu–Sat |
| United UAL1263 | 1:31p | 1h44m | Tue, Thu, Fri, Sat, Sun |
| United UAL1263 | 1:43p | 1h45m | Wed |
| United UAL1263 | 1:55p | 1h52m | Mon |
| Southwest SWA196 | 2:01p | 1h56m | Wed |
| Southwest SWA239 | 2:11p | 1h45m | Fri |
| Southwest SWA3076 | 2:14p | 1h42m | Sun |
| Southwest SWA196 | 2:19p | 1h56m | Tue |
| Southwest SWA239 | 2:22p | 1h54m | Mon |
| Southwest SWA239 | 2:39p | 1h52m | Thu |
| Southwest SWA1228 | 6:17p | 1h43m | Sun |
| Frontier FFT1262 | 7:56p | 1h43m | Tue |
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 53 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 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 Ontario to Denver?
The nonstop flight from Ontario (ONT) to Denver (DEN) takes about 1h46m 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 1h46m.