Cheap flights from San Diego to Ontario from $227
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 12/1. 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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Not ready to book? to track prices.Alaska Airlines flights from San Diego to Region of Ontario
Our best Alaska Airlines deals on San Diego to Region of Ontario flight tickets
Air Canada flights from San Diego to Region of Ontario
Our best Air Canada deals on San Diego to Region of Ontario flight tickets
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Use the filters below to find and compare flights from San Diego to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
San DiegoToronto
SAN San Diego - YYZ Toronto Pearson Intl
SANYYZ
San Diego
Thu 1/21
3:09 pm-4:50 pm
1 stop22h 41m
Toronto Pearson Intl
Mon 1/25
6:00 am-12:40 pm
1 stop9h 40m
San DiegoToronto
SAN San Diego - YYZ Toronto Pearson Intl
SANYYZ
San Diego
Mon 11/9
8:20 pm-6:51 am
1 stop7h 31m
Toronto Pearson Intl
Mon 11/16
1:40 pm-7:26 am
1 stop20h 46m
San DiegoToronto
SAN San Diego - YYZ Toronto Pearson Intl
SANYYZ
San Diego
Fri 1/15
1:30 pm-5:45 am
2 stops13h 15m
Toronto Pearson Intl
Mon 1/18
6:00 am-12:40 pm
1 stop9h 40m
San DiegoToronto
SAN San Diego - YYZ Toronto Pearson Intl
SANYYZ
San Diego
Fri 1/22
1:30 pm-5:45 am
2 stops13h 15m
Toronto Pearson Intl
Mon 1/25
6:00 am-12:40 pm
1 stop9h 40m
San DiegoOttawa
SAN San Diego - YOW Ottawa
SANYOW
San Diego
Tue 11/3
12:55 pm-1:40 am
1 stop9h 45m
Ottawa
Tue 11/10
7:45 am-4:25 pm
1 stop11h 40m
San DiegoToronto
SAN San Diego - YYZ Toronto Pearson Intl
SANYYZ
San Diego
Fri 1/15
12:50 pm-8:50 pm
Nonstop5h 00m
Toronto Pearson Intl
Mon 1/18
9:20 am-12:00 pm
Nonstop5h 40m
San DiegoOttawa
SAN San Diego - YOW Ottawa
SANYOW
San Diego
Sun 12/6
4:45 pm-2:09 pm
2 stops18h 24m
Ottawa
Sat 12/12
3:10 pm-9:18 pm
1 stop9h 08m
San DiegoOttawa
SAN San Diego - YOW Ottawa
SANYOW
San Diego
Sun 12/6
4:45 pm-2:09 pm
2 stops18h 24m
Ottawa
Sat 12/12
6:15 am-6:12 pm
2 stops14h 57m
San DiegoToronto
SAN San Diego - YYZ Toronto Pearson Intl
SANYYZ
San Diego
Thu 11/5
10:40 pm-12:32 pm
1 stop10h 52m
Toronto Pearson Intl
Tue 11/10
7:09 am-7:15 pm
1 stop15h 06m
San DiegoToronto
SAN San Diego - YYZ Toronto Pearson Intl
SANYYZ
San Diego
Thu 10/29
10:40 pm-12:34 pm
1 stop10h 54m
Toronto Pearson Intl
Sat 10/31
1:15 pm-10:35 pm
1 stop12h 20m
See travel insights to Ontario from
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 March is, on average, the cheapest month to fly to Region of Ontario from San Diego, with most prices found around $416. If you aren’t able to travel during the month of March, then book flights to Region of Ontario from San Diego during May instead. Flights to Region of Ontario in May, while not as cheap as those in March, still average around $460.
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 San Diego. The lowest ticket price found for a Thursday departure recently was $584. 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 $700. 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 San Diego to Region of Ontario at noon for as low as $576. 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 $646.
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 from San Diego to Ontario?
You are more likely to see cheaper flights to Region of Ontario from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $622 when searching 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 $355 on momondo.
What cabin class options are available on San Diego to Region of Ontario flights?
There are 3 cabin classes available to choose from on San Diego to Region of 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?
Air Canada and Alaska Airlines are the most popular carriers operating from San Diego to Ontario
What airlines fly to Region of Ontario?
Air Canada, United Airlines and Delta 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 October 2026, there are 2 flights per day flying from San Diego to Region of Ontario. The most common time of day flights depart is 1:00PM, with 100% of flights taking off in the afternoon.
How many flights depart from San Diego to Region of Ontario on average per week?
14 flights are operational weekly from San Diego to Region of Ontario as of October 2026. The most popular departure day for this route is Mon, with 14% 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
Frequently asked questions about flying from San Diego to Ontario
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 5 operators available for flights from San Diego Airport to Ontario as of October 2026.
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 Boeing 737 MAX 8 (39.09% of total bookings). The next most popular plane models are Airbus A319 (22.27%), Airbus A321-100/200 (10.23%), and Airbus A320-100/200 (8.41%).
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 $155 | Free Cancellation | Rating 7.4 10,332 reviews | |||
| PriceFrom $170 | Free Cancellation | Rating 7.2 3,452 reviews | |||
| PriceFrom $212 | Free Cancellation | Rating 7.8 8,653 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 7.1 11,748 reviews | |||
| PriceFrom $418 | Free Cancellation | Rating 7.0 12,150 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.