Cheap flights from Ontario to San Diego from C$ 165
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 San Diego departing on 24/7. 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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United Airlines flights from Region of Ontario to San Diego
Our best United Airlines deals on Region of Ontario to San Diego flight tickets
Air Canada flights from Region of Ontario to San Diego
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How to get the cheapest flight ticket from Region of Ontario to San Diego
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 San Diego?
In general, April is the cheapest month to fly from Region of Ontario to San Diego. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 374. If you are unable to visit San Diego during the month of April, then departing from Region of Ontario during the month February is also very affordable. Most momondo users find prices during this month for around C$ 378.
What is the cheapest day to depart on your flight to San Diego?
The cheapest day to depart on your flight to San Diego is on a Wednesday when prices can be found for as low as C$ 430. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to San Diego on Saturday is C$ 635.
What is the cheapest time of day to depart on your flight to San Diego?
Flying to San Diego from Region of Ontario in the morning is the least expensive time of day to depart. momondo users have found prices as low as C$ 488 when looking at flights departing in the morning. Flights to San Diego are more costly in the evening, with an average ticket price of C$ 675. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Ontario to San Diego flight route?
Fly from Toronto Pearson Intl to San Diego for the best Ontario - San Diego flight prices
How far in advance should I book a flight to San Diego?
You are more likely to see cheaper flights to San Diego from Region of Ontario when booking 9 weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around C$ 486 when searching 9 weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Region of Ontario for as low as C$ 431 on momondo.
What cabin class options are available on Ontario to San Diego flights?
There are 3 cabin classes available to choose from on Ontario to San Diego 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 San Diego?
WestJet, Air Canada, and United Airlines are the most popular carriers operating from Ontario to San Diego
Which airlines fly to San Diego?
Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to San Diego from Region of Ontario according to our data. Air Canada is the first choice among our users, with 51% of people opting to fly with this airline when travelling to San Diego. Keep in mind that there are 9 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.
How many flights depart from Region of Ontario to San Diego on average per day?
The number of flights available between Region of Ontario and San Diego is 5 per day as of June 2025. The most frequent departure time is 9:00a.m., with 100% of daily flights leaving at noon.
How many flights depart from Region of Ontario to San Diego on average per week?
The number of flights available between Region of Ontario and San Diego is 36 per week as of June 2025. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.
Cheap Region of Ontario to San Diego flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to San Diego
Best price found | C$ 165 |
|---|---|
Fastest flight time | 5h 11m |
Direct flights | Every day |
Airports in San Diego | 1 airport |
When did momondo last update prices for flights from Ontario to San Diego Airport?
Prices for flights from Ontario to San Diego Airport are updated daily.
How many operators does momondo search for flights from Ontario to San Diego Airport?
The number of operators available for flights from Ontario to San Diego Airport is 9 as of June 2025.
How old do you have to be to fly from Ontario to San Diego Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The required travel and health documents for your San Diego Airport 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 San Diego Airport. 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 Region of Ontario to San Diego?
momondo data reveals that the most frequently booked plane model on the route from Region of Ontario to San Diego is Embraer 195 E2, representing 53.81% of all bookings. The subsequent popular models are Airbus A220-300 at 29.21%, Boeing 737 MAX 8 at 12.69%, and Airbus A320-100/200 at 2.83%.
Best airlines flying from Region of Ontario to San Diego
Compare and see reviews for airlines that fly from Region of Ontario to San Diego with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 244 | Free Cancellation | Rating 8.0 289 reviews | |||
| PriceFrom C$ 246 | Free Cancellation | Rating 7.8 398 reviews | |||
| PriceFrom C$ 269 | Free Cancellation | Rating 7.1 9,572 reviews | |||
| PriceFrom C$ 289 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom C$ 303 | Free Cancellation | Rating 7.4 8,810 reviews | |||
| PriceFrom C$ 318 | Free Cancellation | Rating 8.0 7,964 reviews | |||
| PriceFrom C$ 327 | Free Cancellation | Rating 7.2 2,876 reviews | |||
| PriceFrom C$ 399 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom C$ 691 | Free Cancellation | Rating 9.2 5 reviews |
Travelling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Ontario to San Diego?
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 San Diego from Ontario.
Can I find flights from Ontario to San Diego with flexible booking policies on momondo?
momondo does allow users to show only those flights to San Diego from Ontario which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Ontario to San Diego?
Once all potential Ontario to San Diego flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Ontario to San Diego right now. Can momondo alert me if prices change?
If you are simply researching potential flights to San Diego, momondo offers a useful price alert feature which will track prices for flights to San Diego from Ontario and alert you when they change.