- Fastest flight
- non-stop flights
- 28x / week
- Flight distance
- 585 km
- Time difference
- none
- Most popular airlines
- United Airlines
- Frontier Airlines
- United Airlines
Flight schedule from San Francisco (SFO) to Ontario (ONT)
Select a travel date in the flight schedule for the route from San Francisco (SFO) to Ontario (ONT) and compare affordable flight deals.
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Matching outbound flightsSFO–ONT · 15 of 15
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- September 13 – 19, 2026
- September 20 – 26, 2026
- Sep 27 – Oct 3, 2026
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- SFOONTnonstop
- SFOONTnonstop
- SFOONTnonstop
- SFOONTnonstop
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Tips and tricks to help you find cheap flights from San Francisco to Ontario
Favorite airline: Frontier Airlines
99 % of travelers choose to book flights on this route with Frontier Airlines and United Airlines.
Frontier Airlines
83 %
United Airlines
16 %
Important flight information
Frequently Asked Questions (FAQ)
How long is the flight from San Francisco to Ontario?
A nonstop flight from San Francisco to Ontario typically takes around 1 hour 37 minutes. This makes the nonstop service the fastest and most convenient way to travel between San Francisco and Ontario. It is worth checking flight times when searching, as they can vary by airline and travel date.
Are there nonstop flights from San Francisco to Ontario?
Yes, there are nonstop flights from San Francisco to Ontario, averaging around 4 flights per day, operated by, among others, United Airlines and Frontier Airlines. If you want to fly without a layover, it is worth filtering specifically for nonstop flights when searching.
Which airlines fly from San Francisco to Ontario?
Direct flights from San Francisco to Ontario are operated by, among others, United Airlines and Frontier Airlines. These flights take you to Ontario nonstop, making them especially practical for short trips or weekend getaways. It is still worth comparing departure times and airline policies, as baggage rules and fees can vary.
On which days are there nonstop flights from San Francisco to Ontario?
Nonstop flights from San Francisco to Ontario operate daily. The schedule may vary by season, so it is worth comparing several travel dates. If your preferred day does not have a nonstop flight, nearby departure days or short connecting flights may be a good alternative.
How many flights are there per day from San Francisco to Ontario?
On the route from San Francisco to Ontario, there are on average around 4 flights per day. The number of flights can vary by day of the week and season. If you are flexible with your dates, it is worth comparing several departure days.
How many flights per week are there from San Francisco to Ontario?
From San Francisco to Ontario, there are around 28 flights per week. This means you usually have connections available on several days and at various times. Beyond the price, it is worth comparing flight duration, airline, and any potential additional fees.
When does the first flight from San Francisco to Ontario depart?
The earliest nonstop flight from San Francisco to Ontario usually departs at 8:40 AM. The exact departure time may vary by day of the week and airline. Early flights are especially useful if you want to make the most of your arrival day in Ontario.
When does the last flight from San Francisco to Ontario depart?
The last nonstop flight from San Francisco to Ontario usually departs at 9:30 PM. Late flights can be convenient if you want to travel after work or in the evening. Do check whether it is a nonstop flight, as a connecting itinerary could push the arrival time significantly later.