Cheap flights from California to Ontario from $57
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Ontario departing on 8/22. 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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0 bags
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United Airlines flights from California to Region of Ontario
Our best United Airlines deals on California to Region of Ontario flight tickets
United Airlines![United Airlines]()
Jul 5![United Airlines]()
Jul 19
LAX7:30 amLos Angeles
12h 06m
1 stop
YYZ10:36 pmToronto Pearson Intl
YYZ7:00 amToronto Pearson Intl
15h 21m
1 stop
LAX7:21 pmLos Angeles
United Airlines![United Airlines]()
Jun 21![United Airlines]()
Jul 4
LAX10:52 amLos Angeles
8h 56m
1 stop
YYZ10:48 pmToronto Pearson Intl
YYZ2:45 pmToronto Pearson Intl
10h 25m
1 stop
LAX10:10 pmLos Angeles
Air Canada flights from California to Region of Ontario
Our best Air Canada deals on California to Region of Ontario flight tickets
Air Canada![Air Canada]()
Dec 2![Air Canada]()
Dec 8
LAX10:55 pmLos Angeles
4h 41m
YYZ6:36 amToronto Pearson Intl
YYZ6:55 pmToronto Pearson Intl
5h 32m
LAX9:27 pmLos Angeles
Air Canada![Air Canada]()
Aug 12![Air Canada]()
Aug 21
LAX9:55 pmLos Angeles
4h 50m
YYZ5:45 amToronto Pearson Intl
YYZ6:45 pmToronto Pearson Intl
5h 15m
LAX9:00 pmLos Angeles
See travel insights to Ontario from
How to get the cheapest flight ticket from California to Region of Ontario
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
Prices
Airlines
Other information
What is the cheapest month to fly to Region of Ontario?
The month of May is, on average, the cheapest month to fly to Region of Ontario from California, with most prices found around $265. If you aren’t able to travel during the month of May, then book flights to Region of Ontario from California during September instead. Flights to Region of Ontario in September, while not as cheap as those in May, still average around $273.
What is the cheapest day to depart on your flight to Region of Ontario?
According to our data, Thursday is the cheapest day to fly to Region of Ontario from California. The lowest ticket price found for a Thursday departure recently was $369. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from California to Region of Ontario on a Sunday will generally be more expensive and average around $542. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Region of Ontario?
According to our data, the cheapest time of day to fly to Region of Ontario is at noon. momondo users have found flights departing from California to Region of Ontario at noon for as low as $309. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $564.
What is the cheapest California to Ontario flight route?
Fly from Los Angeles to Toronto Pearson Intl for the best California - Ontario flight prices
How far in advance should I book a flight to Region of Ontario?
You are more likely to see cheaper flights to Region of Ontario from California when booking 15 weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $320 when searching 15 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from California for as low as $215 on momondo.
What cabin class options are available on California to Ontario flights?
There are 4 cabin classes available to choose from on California to Ontario 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 California to Ontario?
WestJet, Air Canada, and Porter Airlines are the most popular carriers operating from California to Ontario
What airlines fly to Region of Ontario?
Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Region of Ontario from California according to our data. Air Canada is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 7 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.
How many flights depart from California to Region of Ontario on average per day?
As of June 2025, 66 flights take off from California and land in Region of Ontario each day. The most common flight departure time for this route is 12:00PM, with 53% of daily flights taking off in the afternoon.
How many flights depart from California to Region of Ontario on average per week?
466 flights are operational weekly from California to Region of Ontario as of June 2025. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.
Cheap California to Region of Ontario flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from California to Region of Ontario
Best Price Found | $57 |
|---|---|
Fastest flight time | 4h 41m |
Direct flights | Every day |
Airports in Region of Ontario | 3 airports |
When did momondo last update prices for flights from California to Ontario?
Prices for flights from California to Ontario are updated daily.
How many operators does momondo search for flights from California to Ontario?
The number of operators available for flights from California to Ontario is 7 as of June 2025.
How old do you have to be to fly from California to Ontario?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from California to Ontario.
What documentation or ID do you need to fly to Ontario?
The required travel and health documents for your Ontario trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from California to Region of Ontario?
momondo data reveals that the most frequently booked plane model on the route from California to Region of Ontario is Embraer 195 E2, representing 34.39% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 13.83%, Airbus A321-100/200 at 13.47%, and Airbus A320-100/200 at 9.15%.
Best airlines flying from California to Region of Ontario
Compare and see reviews for airlines that fly from California to Region of Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $120 | Free Cancellation | Rating 8.0 289 reviews | |||
| PriceFrom $131 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $131 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $136 | Free Cancellation | Rating 7.1 9,554 reviews | |||
| PriceFrom $137 | Free Cancellation | Rating 7.2 2,873 reviews | |||
| PriceFrom $137 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $146 | Free Cancellation | Rating 7.8 398 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from California to Ontario?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from California to Ontario. momondo saves you time and could save you money on your trip.
Can I find flights from California to Ontario with flexible booking policies on momondo?
Yes. All flights to Ontario from California on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from California to Ontario?
momondo provides multiple filters to help you find the best flight to Ontario from California. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from California to Ontario right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of California to Ontario flights. All you need is a valid email address and we will do the rest; it is that quick and easy.
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