Cheap flights from Ontario to California from $39
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to California departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Ontario to California
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest Ontario to California flight route?
Fly from Ontario to San Francisco for the best Ontario - California flight prices
What cabin class options are available on Ontario to California flights?
There are 4 cabin classes available to choose from on Ontario to California flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Ontario to California?
Southwest, Frontier, and United Airlines are the most popular carriers operating from Ontario to California
What airlines fly to California?
Frontier, United Airlines and Southwest are the top three most popular airlines that fly to California from Ontario according to our data. Frontier is the first choice among our users, with 40% of people opting to fly with this airline when traveling to California. Keep in mind that there are 10 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.
How many flights depart from Ontario to California on average per day?
The number of flights available between Ontario and California is 29 per day as of June 2025. The most frequent departure time is 6:00PM, with 36% of daily flights leaving in the evening.
How many flights depart from Ontario to California on average per week?
206 flights are operational weekly from Ontario to California as of June 2025. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.
Cheap Ontario to California flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ontario to California
When did momondo last update prices for flights from Ontario Airport to California?
Prices for flights from Ontario Airport to California refresh daily.
How many operators does momondo search for flights from Ontario Airport to California?
As of June 2025, there are 7 operators available to choose from for flights from Ontario Airport to California.
How old do you have to be to fly from Ontario Airport to California?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to California.
What documentation or ID do you need to fly to California?
The travel and health documents required for your trip to California can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at California. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Ontario to California?
Based on momondo bookings for flights between Ontario and California, the leading plane model is Airbus A320neo, making up 13.42% of the total bookings. Other popular models include Boeing 737 MAX 8 with 10.87%, Airbus A320-100/200 with 10.08%, and Boeing 737-800 with 8.67%.
Best airlines flying from Ontario to California
Compare and see reviews for airlines that fly from Ontario to California with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $30 | Free Cancellation | Rating 5.9 3,296 reviews | |||
| PriceFrom $36 | Free Cancellation | Rating 6.3 8,061 reviews | |||
| PriceFrom $58 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $67 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $85 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $113 | Free Cancellation | Rating 8.0 4,278 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Ontario to California?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to California from Ontario.
Can I find flights from Ontario to California with flexible booking policies on momondo?
Flights from Ontario to California with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Ontario to California?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to California from Ontario.
I’m not ready to book a flight from Ontario to California right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Ontario to California flights. All you need is a valid email address and we will do the rest; it is that quick and easy.