Cheap flights from San Diego to Ontario from $100
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Ontario departing on 7/27. 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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Porter Airlines flights from San Diego to Region of Ontario
Our best Porter Airlines deals on San Diego to Region of Ontario flight tickets
WestJet flights from San Diego to Region of Ontario
Our best WestJet deals on San Diego to Region of Ontario flight tickets
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How to get the cheapest flight ticket from San Diego 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
What is the cheapest month to fly to Region of Ontario?
The month of January is, on average, the cheapest month to fly to Region of Ontario from San Diego, with most prices found around $267. If you aren’t able to travel during the month of January, then book flights to Region of Ontario from San Diego during April instead. Flights to Region of Ontario in April, while not as cheap as those in January, still average around $269.
What is the cheapest day to depart on your flight to Region of Ontario?
According to our data, Wednesday is the cheapest day to fly to Region of Ontario from San Diego. The lowest ticket price found for a Wednesday departure recently was $456. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from San Diego to Region of Ontario on a Sunday will generally be more expensive and average around $609. 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 in the afternoon. momondo users have found flights departing from San Diego to Region of Ontario in the afternoon for as low as $264. 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 evening are often more expensive with an average ticket price of $606.
What is the cheapest San Diego to Ontario flight route?
Fly from San Diego to Toronto Pearson Intl for the best San Diego - 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 San Diego when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $404 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from San Diego for as low as $286 on momondo.
What cabin class options are available on San Diego to Ontario flights?
There are 4 cabin classes available to choose from on San Diego 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 San Diego to Ontario?
WestJet, Air Canada, and American Airlines are the most popular carriers operating from San Diego to Ontario
What airlines fly to Region of Ontario?
Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Region of Ontario from San Diego according to our data. Air Canada is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 6 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 San Diego to Region of Ontario on average per day?
As of June 2025, there are 5 flights per day flying from San Diego to Region of Ontario. The most common time of day flights depart is 12:00PM, with 100% of flights taking off in the afternoon.
How many flights depart from San Diego to Region of Ontario on average per week?
36 flights are operational weekly from San Diego 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 San Diego to Region of Ontario flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Diego to Region of Ontario
Best Price Found | $100 |
|---|---|
Fastest flight time | 4h 50m |
Direct flights | Every day |
Airports in Region of Ontario | 6 airports |
When did momondo last update prices for flights from San Diego Airport to Ontario?
Prices for flights from San Diego Airport to Ontario refresh daily.
How many operators does momondo search for flights from San Diego Airport to Ontario?
There are 6 operators available for flights from San Diego Airport to Ontario as of June 2025.
How old do you have to be to fly from San Diego Airport to Ontario?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from San Diego to Region of Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Diego to Region of Ontario is Embraer 195 E2 (52.89% of total bookings). The next most popular plane models are Airbus A220-300 (25.07%), Boeing 737 MAX 8 (13.91%), and Airbus A320-100/200 (3.43%).
Best airlines flying from San Diego to Region of Ontario
Compare and see reviews for airlines that fly from San Diego to Region of Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $139 | Free Cancellation | Rating 8.0 288 reviews | |||
| PriceFrom $146 | Free Cancellation | Rating 7.8 396 reviews | |||
| PriceFrom $153 | Free Cancellation | Rating 7.1 9,537 reviews | |||
| PriceFrom $154 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $229 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $317 | Free Cancellation | Rating 7.2 10,000 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from San Diego to Ontario?
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 Ontario from San Diego.
Can I find flights from San Diego to Ontario with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Ontario from San Diego with this policy.
How can momondo help me find flights from San Diego to Ontario?
Once you have performed a search for San Diego to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from San Diego to Ontario right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Ontario from San Diego. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.