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Cheap flights from Ontario to San Diego from $141

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 10/16. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:00 pm - 7:17 amYYZ-SAN
14h 17m1 stop
Multiple Airlines Logo
7:57 pm - 6:47 amSAN-YYZ
7h 50m1 stop
$274Multiple Airlines
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Thu, Jan 22 - Thu, Jan 29
Multiple Airlines Logo
10:25 pm - 9:20 pmYYZ-SAN
25h 55m2 stops
Multiple Airlines Logo
8:00 am - 7:58 pmSAN-YYZ
8h 58m1 stop
$277Multiple Airlines
Find Deal
Mon, Oct 13 - Wed, Oct 22
WestJet Logo
10:15 pm - 11:45 amYYZ-SAN
16h 30m1 stop
WestJet Logo
12:35 pm - 12:26 amSAN-YYZ
8h 51m1 stop
$301WestJet
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Sun, Oct 26 - Fri, Oct 31
WestJet Logo
10:15 pm - 11:45 amYYZ-SAN
16h 30m2 stops
WestJet Logo
12:35 pm - 12:26 amSAN-YYZ
8h 51m1 stop
$307WestJet
Find Deal
Sun, Oct 26 - Fri, Oct 31
Air Canada Logo
9:00 am - 11:38 amYYZ-SAN
5h 38mnonstop
Air Canada Logo
12:25 pm - 8:16 pmSAN-YYZ
4h 51mnonstop
$350Air Canada
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Wed, Nov 5 - Mon, Nov 24
Air Canada Logo
9:00 am - 5:24 pmYUL-SAN
11h 24m1 stop
Air Canada Logo
1:10 pm - 12:31 amSAN-YUL
8h 21m1 stop
$375Air Canada
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Wed, Jan 14 - Tue, Apr 28
United Airlines Logo
3:00 pm - 11:44 pmYUL-SAN
11h 44m2 stops
United Airlines Logo
10:00 pm - 3:16 pmSAN-YUL
14h 16m1 stop
$381United Airlines
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Wed, Oct 29 - Wed, Nov 5
Delta Logo
12:45 pm - 6:03 pmYUL-SAN
8h 18m1 stop
Delta Logo
10:30 pm - 12:20 pmSAN-YUL
10h 50m1 stop
$382Delta
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Wed, Jan 7 - Sun, Jan 11
United Airlines Logo
9:15 am - 6:34 pmYUL-SAN
12h 19m2 stops
United Airlines Logo
9:55 pm - 10:57 amSAN-YUL
10h 02m1 stop
$389United Airlines
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Tue, Jan 13 - Wed, Apr 29
Delta Logo
7:10 am - 10:55 pmYUL-SAN
18h 45m2 stops
Delta Logo
10:20 pm - 11:59 amSAN-YUL
10h 39m1 stop
$406Delta
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Sat, Dec 13 - Mon, Dec 29

WestJet flights from Region of Ontario to San Diego

Our best WestJet deals on Region of Ontario to San Diego flight tickets
WestJet
Oct 26
YYZ10:15 pmToronto Pearson Intl
16h 30m
1 stop
SAN11:45 amSan Diego
Oct 31
SAN12:35 pmSan Diego
8h 51m
1 stop
YYZ12:26 amToronto Pearson Intl
$301
Find similar
WestJet
Oct 26
YYZ10:15 pmToronto Pearson Intl
16h 30m
2 stops
SAN11:45 amSan Diego
Oct 31
SAN12:35 pmSan Diego
8h 51m
1 stop
YYZ12:26 amToronto Pearson Intl
$307
Find similar
WestJet
Nov 15
YYZ8:00 amToronto Pearson Intl
30h 45m
2 stops
SAN11:45 amSan Diego
Nov 21
SAN12:35 pmSan Diego
8h 51m
1 stop
YYZ12:26 amToronto Pearson Intl
$345
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Air Canada flights from Region of Ontario to San Diego

Our best Air Canada deals on Region of Ontario to San Diego flight tickets
Air Canada
Nov 5
YYZ9:00 amToronto Pearson Intl
5h 38m
SAN11:38 amSan Diego
Nov 24
SAN12:25 pmSan Diego
4h 51m
YYZ8:16 pmToronto Pearson Intl
$350
Find similar
Air Canada
Jan 14
YUL9:00 amMontreal Pierre Elliott Trudeau Intl
11h 24m
1 stop
SAN5:24 pmSan Diego
Apr 28
SAN1:10 pmSan Diego
8h 21m
1 stop
YUL12:31 amMontreal Pierre Elliott Trudeau Intl
$375
Find similar
Air Canada
Jan 14
YUL9:00 amMontreal Pierre Elliott Trudeau Intl
11h 24m
1 stop
SAN5:24 pmSan Diego
Apr 28
SAN1:10 pmSan Diego
8h 21m
1 stop
YUL12:31 amMontreal Pierre Elliott Trudeau Intl
$376
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 1, 2025.
Use the filters below to find and compare flights from Ontario to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Thu 1/22

8:00 pm-7:17 am

1 stop14h 17m

San Diego

Thu 1/29

7:57 pm-6:47 am

1 stop7h 50m

$274

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Mon 10/13

10:25 pm-9:20 pm

2 stops25h 55m

San Diego

Wed 10/22

8:00 am-7:58 pm

1 stop8h 58m

$277

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Sun 10/26

10:15 pm-11:45 am

1 stop16h 30m

San Diego

Fri 10/31

12:35 pm-12:26 am

1 stop8h 51m

$301

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Sun 10/26

10:15 pm-11:45 am

2 stops16h 30m

San Diego

Fri 10/31

12:35 pm-12:26 am

1 stop8h 51m

$307

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Wed 11/5

9:00 am-11:38 am

Nonstop5h 38m

San Diego

Mon 11/24

12:25 pm-8:16 pm

Nonstop4h 51m

$350

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 1/14

9:00 am-5:24 pm

1 stop11h 24m

San Diego

Tue 4/28

1:10 pm-12:31 am

1 stop8h 21m

$375

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 10/29

3:00 pm-11:44 pm

2 stops11h 44m

San Diego

Wed 11/5

10:00 pm-3:16 pm

1 stop14h 16m

$381

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 1/7

12:45 pm-6:03 pm

1 stop8h 18m

San Diego

Sun 1/11

10:30 pm-12:20 pm

1 stop10h 50m

$382

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 1/13

9:15 am-6:34 pm

2 stops12h 19m

San Diego

Wed 4/29

9:55 pm-10:57 am

1 stop10h 02m

$389

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Sat 12/13

7:10 am-10:55 pm

2 stops18h 45m

San Diego

Mon 12/29

10:20 pm-11:59 am

1 stop10h 39m

$406

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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 $279.

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 Friday. Travelers who choose to depart for San Diego on a Friday will often find tickets for as low as $280. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $367. 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 time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $286. Flights at noon are often more expensive with an average ticket price of $582.

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 weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $349 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 $298 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.

Can stopping save me money on Region of Ontario to San Diego flights?

You could potentially save up to 17% on your flight if you consider stops on a Region of Ontario to San Diego flight.

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

$162

Fastest flight time

5h 11m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Region of Ontario in the past 72 hours is $162. The best round-trip flight deal from Region of Ontario to San Diego found on momondo in the last 72 hours is $275.
The fastest flight from Region of Ontario to San Diego takes 5h 11m
Direct flights go from Region of Ontario to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)
Search flight deals

  • 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?

  • 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?

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
Porter AirlinesPriceFrom $115Free CancellationRating
7.9
372 reviews
Search Porter Airlines flights
Air CanadaPriceFrom $207Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom $229Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
Air TransatPriceFrom $234Free CancellationRating
7.7
450 reviews
Search Air Transat flights
DeltaPriceFrom $264Free CancellationRating
7.9
7,961 reviews
Search Delta flights

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
La Mesa
National City
Imperial Beach
Poway
Borrego Springs
San Ysidro
Lemon Grove
Alpine
Santee

Why 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.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Fri 10/31
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