Direct flights from San Francisco to Ontario
36 nonstop flights a week on 2 airlines. Zero layovers — one hop from SFO to ONT.
Flight time: about 59m nonstop
Flying back? Ontario → San Francisco · 39 nonstop flights a week
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 |
|---|---|---|---|
| SkyWest SKW5763 | 8:40a | 1h1m | Tue, Wed, Sat |
| United UAL2661 | 10:43a | 1h | Mon, Thu, Fri, Sun |
| SkyWest SKW5571 | 1:41p | 1h1m | Daily |
| SkyWest SKW5467 | 4:10p | 58m | Mon, Thu, Fri, Sun |
| United UAL393 | 4:10p | 56m | Tue |
| United UAL393 | 4:15p | 59m | Sat |
| Frontier FFT2678 | 6:02p | 55m | Mon |
| Frontier FFT1160 | 6:02p | 58m | Thu, Fri, Sun |
| United UAL2478 | 7:00p | 59m | Mon, Tue, Wed, Thu, Fri, Sun |
| United UAL552 | 9:25p | 58m | Mon, Wed, Thu, Fri, Sat, Sun |
UnitedOther airports near San Francisco with nonstops to Ontario
| Airport | Distance | Flights / wk |
|---|---|---|
| OAK — OaklandSouthwest | 11 mi | 28 |
| SJC — San JoseSouthwest | 30 mi | 25 |
| STS — Santa RosaAlaska | 66 mi | 7 |
| SMF — SacramentoSouthwest | 86 mi | 39 |
The 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 36 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 59m 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 59m.
Is there a nonstop return flight from Ontario to San Francisco?
Yes — 39 nonstop flights a week from Ontario (ONT) back to San Francisco (SFO) on Frontier and United, based on recently observed departures.