Direct flights from San Francisco to Ontario
39 nonstop flights a week on 2 airlines. Zero layovers — one hop from SFO to ONT.
Flight time: about 1h nonstop
Which days does it fly?
When does it fly?
Departure times in San Francisco local time, from flights observed over the last 7 days.
| Flight | Departs | Duration | Days |
|---|---|---|---|
| Frontier FFT2678 | 8:17a | 52m | Tue |
| SkyWest SKW5907 | 9:03a | 1h1m | Sun |
| SkyWest SKW5907 | 9:08a | 1h1m | Tue, Sat |
| SkyWest SKW5907 | 9:22a | 1h4m | Wed, Fri |
| SkyWest SKW5907 | 9:27a | 1h1m | Mon |
| United UAL2661 | 10:54a | 1h | Sun |
| United UAL2661 | 10:57a | 58m | Thu |
| United UAL2661 | 11:07a | 58m | Mon |
| United UAL2661 | 12:07p | 59m | Fri |
| SkyWest SKW5932 | 1:51p | 1h1m | Wed |
| SkyWest SKW5932 | 1:56p | 1h1m | Tue, Sat |
| SkyWest SKW5932 | 2:21p | 59m | Fri, Sun |
| SkyWest SKW5932 | 2:27p | 1h1m | Mon |
| SkyWest SKW5571 | 3:04p | 1h | Thu |
| SkyWest SKW5467 | 4:27p | 58m | Thu–Fri |
| United UAL393 | 4:30p | 58m | Tue, Sat |
| SkyWest SKW5467 | 4:54p | 1h23m | Sun |
| SkyWest SKW5467 | 5:44p | 1h1m | Mon |
| Frontier FFT1160 | 6:25p | 1h | Sun |
| Frontier FFT2678 | 6:54p | 57m | Fri |
| United UAL2478 | 7:06p | 1h1m | Tue |
| United UAL2478 | 7:18p | 58m | Wed |
| Frontier FFT1160 | 7:21p | 57m | Thu |
| United UAL2478 | 7:31p | 59m | Sun |
| United UAL2478 | 7:37p | 57m | Thu |
| United UAL2478 | 7:57p | 1h3m | Mon |
| United UAL2478 | 8:05p | 59m | Fri |
| United UAL552 | 9:44p | 1h1m | Mon, Wed |
| United UAL552 | 9:50p | 1h1m | Fri–Sat |
| United UAL552 | 9:55p | 58m | Thu |
| United UAL552 | 10:24p | 58m | Sun |
UnitedThe route
One hop: SFO → ONTDrag to pan · scroll with ⌘/Ctrl to zoom · arrow keys when focused
Nonstop from San Francisco (SFO) to Ontario (ONT)
San Francisco International Airport (SFO) has 39 nonstop flights a week to Ontario (ONT), operated by Frontier and United. No layovers, no connections — one hop out of SFO and you're there.
This route flies every day of the week, so any travel day works. Route data updated October 2026 from observed departures.
Route data updated October 2026 from observed flight departures. Schedules change — always confirm with the airline before booking.
How long is the flight from San Francisco to Ontario?
The nonstop flight from San Francisco (SFO) to Ontario (ONT) takes about 1h in the air, based on recently observed nonstop departures.
How long does it take to drive from San Francisco to Ontario?
Driving from San Francisco to Ontario takes about 6h 31m, covering roughly 417 miles. The nonstop flight takes about 1h.