Cheap flights from Ontario to San Diego from $219
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 11/22. 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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WestJet flights from Region of Ontario to San Diego
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Fly from
Fly to
Route
Depart
Return
OttawaSan Diego
YOW Ottawa - SAN San Diego
YOWSAN
Ottawa
Fri 11/20
7:45 am-4:25 pm
1 stop11h 40m
San Diego
Fri 11/27
12:55 pm-11:55 pm
1 stop8h 00m
OttawaSan Diego
YOW Ottawa - SAN San Diego
YOWSAN
Ottawa
Sat 12/5
7:45 am-4:10 pm
1 stop11h 25m
San Diego
Tue 12/15
12:55 pm-1:40 am
1 stop9h 45m
TorontoSan Diego
YYZ Toronto Pearson Intl - SAN San Diego
YYZSAN
Toronto Pearson Intl
Thu 1/14
6:30 am-7:57 pm
1 stop16h 27m
San Diego
Fri 1/22
3:09 pm-4:50 pm
1 stop22h 41m
TorontoSan Diego
YYZ Toronto Pearson Intl - SAN San Diego
YYZSAN
Toronto Pearson Intl
Wed 12/2
9:50 am-6:10 pm
1 stop11h 20m
San Diego
Tue 12/8
7:51 pm-9:42 pm
1 stop22h 51m
OttawaSan Diego
YOW Ottawa - SAN San Diego
YOWSAN
Ottawa
Wed 11/4
9:45 am-3:28 pm
1 stop8h 43m
San Diego
Mon 11/9
10:30 pm-2:09 pm
1 stop12h 39m
OttawaSan Diego
YOW Ottawa - SAN San Diego
YOWSAN
Ottawa
Wed 11/4
2:00 pm-8:33 pm
1 stop9h 33m
San Diego
Mon 11/9
4:45 pm-2:09 pm
2 stops18h 24m
TorontoSan Diego
YYZ Toronto Pearson Intl - SAN San Diego
YYZSAN
Toronto Pearson Intl
Wed 1/13
6:30 am-4:36 pm
2 stops13h 06m
San Diego
Sat 1/23
6:50 am-11:04 pm
2 stops13h 14m
TorontoSan Diego
YYZ Toronto Pearson Intl - SAN San Diego
YYZSAN
Toronto Pearson Intl
Sat 1/9
12:15 pm-10:49 pm
2 stops13h 34m
San Diego
Thu 1/14
6:50 am-11:04 pm
2 stops13h 14m
TorontoSan Diego
YYZ Toronto Pearson Intl - SAN San Diego
YYZSAN
Toronto Pearson Intl
Sat 11/7
3:15 pm-11:54 pm
1 stop11h 39m
San Diego
Sat 11/14
10:11 am-11:46 pm
1 stop10h 35m
TorontoSan Diego
YYZ Toronto Pearson Intl - SAN San Diego
YYZSAN
Toronto Pearson Intl
Sat 11/7
3:15 pm-11:54 pm
1 stop11h 39m
San Diego
Sat 11/14
10:11 am-11:46 pm
1 stop10h 35m
See travel insights to San Diego from
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?
If you are unable to visit San Diego during the month of May, then departing from Region of Ontario during the month April is also very affordable. Most momondo users find prices during this month for around $441.
What is the cheapest day to depart on your flight to San Diego?
The cheapest day to depart from Region of Ontario to San Diego is on a Thursday. Travelers who choose to depart for San Diego on a Thursday will often find tickets for as low as $498. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $694. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.
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 from Ontario to San Diego?
You are more likely to see cheaper flights to San Diego from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $500 when searching 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 $418 on momondo.
What cabin class options are available on Region of Ontario to San Diego flights?
There are 2 cabin classes available to choose from on Region of 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.
Can stopping save me money on Region of Ontario to San Diego flights?
You could potentially save up to 26% on your flight if you consider stops on a Region of Ontario to San Diego flight.
What is the cheapest airline that flies from Ontario to San Diego?
Air Canada, United Airlines, and WestJet are the most popular carriers operating from Ontario to San Diego
What airlines fly to San Diego?
Air Canada, United Airlines and Delta 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 57% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 6 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?
As of October 2026, 2 flights take off from Region of Ontario and land in San Diego each day. The most common flight departure time for this route is 10:00AM, with 100% of daily flights taking off 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 14 per week as of October 2026. The most frequent departure day is Mon, with 14% 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
Frequently asked questions about flying from Ontario to San Diego
When did momondo last update prices for flights from Ontario to San Diego Airport?
Prices for flights from Ontario to San Diego Airport refresh 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 4 as of October 2026.
How old do you have to be to fly from Ontario to San Diego Airport?
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 Ontario to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The travel and health documents required for your trip to San Diego Airport 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 San Diego Airport. 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 Region of Ontario to San Diego?
Based on momondo bookings for flights between Region of Ontario and San Diego, the leading plane model is Airbus A319, making up 47.27% of the total bookings. Other popular models include Boeing 737 MAX 8 with 24.29%, Airbus A220-300 with 12.05%, and Airbus A321-100/200 with 9.60%.
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 $314 | Free Cancellation | Rating 7.1 11,748 reviews | |||
| PriceFrom $323 | Free Cancellation | Rating 7.0 12,150 reviews | |||
| PriceFrom $333 | Free Cancellation | Rating 7.8 8,649 reviews | |||
| PriceFrom $377 | Free Cancellation | Rating 7.4 10,329 reviews |
Traveling 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?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to San Diego for you.
Can I find flights from Ontario to San Diego with flexible booking policies on momondo?
All flight searches from Ontario to San Diego on momondo can be filtered to show those which offer flexible booking policies.
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.