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Cheap flights from San Diego to Ontario from C$ 224

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — YYZ
13 Jul — 20 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Diego to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from San Diego to Ontario
Explore the most affordable flight options available from San Diego to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2026.

Wed 8/73:03 p.m.
SAN
-
YYZ
2 stops31h 02m
Multiple Airlines
Tue 14/77:00 a.m.
YYZ
-
SAN
1 stop10h 08m
Multiple Airlines
Deal found 12/6C$ 503
Tue 11/83:03 p.m.
SAN
-
YYZ
1 stop12h 36m
Multiple Airlines
Wed 19/810:50 a.m.
YYZ
-
SAN
2 stops13h 08m
Multiple Airlines
Deal found 12/6C$ 506
Wed 8/73:03 p.m.
SAN
-
YYZ
1 stop12h 36m
Multiple Airlines
Mon 13/79:00 a.m.
YYZ
-
SAN
2 stops32h 08m
Multiple Airlines
Deal found 12/6C$ 510
Tue 7/73:03 p.m.
SAN
-
YYZ
2 stops31h 02m
Multiple Airlines
Tue 14/77:00 a.m.
YYZ
-
SAN
1 stop10h 08m
Multiple Airlines
Deal found 12/6C$ 524
Wed 12/83:03 p.m.
SAN
-
YYZ
1 stop12h 36m
Multiple Airlines
Wed 19/810:50 a.m.
YYZ
-
SAN
2 stops13h 08m
Multiple Airlines
Deal found 12/6C$ 527
Tue 7/73:03 p.m.
SAN
-
YYZ
1 stop12h 36m
Multiple Airlines
Mon 13/79:00 a.m.
YYZ
-
SAN
2 stops32h 08m
Multiple Airlines
Deal found 12/6C$ 531
Tue 18/89:53 p.m.
SAN
-
YYZ
1 stop16h 16m
Multiple Airlines
Tue 25/810:50 a.m.
YYZ
-
SAN
2 stops13h 08m
Multiple Airlines
Deal found 9/6C$ 540
Wed 8/73:03 p.m.
SAN
-
YYZ
1 stop12h 36m
Multiple Airlines
Wed 29/77:00 a.m.
YYZ
-
SAN
2 stops11h 57m
Multiple Airlines
Deal found 13/6C$ 544
Tue 11/83:03 p.m.
SAN
-
YYZ
2 stops31h 02m
Multiple Airlines
Tue 18/88:35 p.m.
YYZ
-
SAN
1 stop27h 23m
Multiple Airlines
Deal found 10/6C$ 549
Sun 2/87:00 a.m.
SAN
-
YUL
Nonstop5h 33m
Air Canada
Tue 11/87:30 a.m.
YUL
-
SAN
1 stop11h 40m
Air Canada
Deal found 9/6C$ 604
Tue 28/73:30 p.m.
SAN
-
YOW
1 stop11h 05m
WestJet
Tue 11/86:00 a.m.
YOW
-
SAN
1 stop11h 10m
WestJet
Deal found 11/6C$ 605
Thu 10/93:30 p.m.
SAN
-
YOW
1 stop11h 05m
WestJet
Sun 13/97:20 a.m.
YOW
-
SAN
1 stop9h 50m
WestJet
Deal found 9/6C$ 607

Find flight deals from San Diego to Ontario

Keep the following information in mind while searching for San Diego to Ontario flight deals. Data was last updated 13 June 2026.

Round-trip from

C$ 503

One-way from

C$ 224

Popular in

October

Cheapest in

November

Average price

C$ 774

Good round-trip deal

C$ 266 or less

Good one-way deal

C$ 287 or less
8/7-14/7
  • 8/7-14/7
  • 3 total stops
  • 41h 10m total
  • San Diego to Ontario
Search Deals
15/7
  • 15/7
  • 2 total stops
  • 12h 52m total
  • San Diego to Ontario
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from San Diego to Ontario.
Search Deals
Price to beat on a one-way flight from San Diego to Ontario.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Ontario 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, Cheapflights users made 629,999 searches. Data last updated 13 June 2026.
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

Price

Cheapest round-trip

San DiegoToronto

SAN - YTZ

SANYTZ

San Diego

Sun 18/10

5:43 p.m.-9:40 a.m.

1 stop12h 57m

Toronto Island

Wed 21/10

1:40 p.m.-10:27 p.m.

1 stop11h 47m

C$ 644

San DiegoToronto

SAN - YTZ

SANYTZ

San Diego

Tue 1/9

7:03 a.m.-9:40 a.m.

1 stop23h 37m

Toronto Island

Wed 30/9

8:40 p.m.-10:00 a.m.

1 stop16h 20m

C$ 657

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 9/9

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Sat 12/9

6:10 a.m.-2:10 p.m.

1 stop11h 00m

C$ 686

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Mon 14/9

12:41 p.m.-8:16 a.m.

1 stop16h 35m

Montreal Pierre Elliott Trudeau Intl

Mon 21/9

5:45 p.m.-8:36 p.m.

Nonstop5h 51m

C$ 700

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Sat 19/9

2:24 p.m.-8:16 a.m.

2 stops14h 52m

Montreal Pierre Elliott Trudeau Intl

Thu 24/9

5:45 p.m.-8:36 p.m.

Nonstop5h 51m

C$ 707

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Wed 15/7

12:59 p.m.-11:58 p.m.

1 stop7h 59m

Toronto Pearson Intl

Fri 17/7

11:40 a.m.-7:35 p.m.

1 stop10h 55m

C$ 712

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Thu 26/11

11:40 a.m.-11:00 p.m.

1 stop8h 20m

Toronto Pearson Intl

Sat 28/11

9:45 a.m.-6:27 p.m.

1 stop11h 42m

C$ 712

San DiegoToronto

SAN - YKF

SANYKF

San Diego

Fri 4/9

3:30 p.m.-7:50 p.m.

1 stop25h 20m

Toronto Region of Waterloo Intl

Tue 8/9

8:40 p.m.-2:10 p.m.

1 stop20h 30m

C$ 717

San DiegoOttawa

SAN - YOW

SANYOW

San Diego

Sat 10/10

9:20 p.m.-4:38 p.m.

1 stop16h 18m

Ottawa

Sat 17/10

6:25 a.m.-11:25 a.m.

1 stop8h 00m

C$ 720

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Wed 9/9

5:00 p.m.-8:16 a.m.

2 stops12h 16m

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

9:15 a.m.-2:57 p.m.

1 stop8h 42m

C$ 728

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from San Diego to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from San Diego with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Ontario

What is the cheapest month to book a flight from San Diego to Region of Ontario?

Currently, September is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of C$ 168). Flying from San Diego to Region of Ontario in January is currently the most expensive (average of C$ 368). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SAN to ON?

Find hourly flight availability from San Diego to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 June 2026.

When flying from San Diego to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from San Diego to Region of Ontario?

How far ahead should I book a flight from San Diego to Region of Ontario?

The price you pay for your flight from San Diego to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 30 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 13 June 2026.
Read reviews from past customers who have flown Air Canada from San Diego to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
11,172 reviews
Check prices

Comfort

7.1

Boarding

7.3

Food

6.3

Overall

7.1

Crew

7.8

Entertainment

6.8

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.
Air Canada
7.1
Good
11,172 reviews
Air Canada
7.1
Good
11,172 reviews
Check prices

Comfort

7.1

Boarding

7.3

Food

6.3

Overall

7.1

Crew

7.8

Entertainment

6.8

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Diego to Ontario?

    Most people fly from San Diego (SAN) if they book a flight from San Diego to Ontario. San Diego is conveniently located just 4.2 km from San Diego’s city centre.

  • How long is the flight from San Diego to Region of Ontario?

    WestJet, United Airlines, and Delta can get you from San Diego to Region of Ontario in just under 5h 27m. Your travel time can differ by up to 5h 23m. San Diego and Region of Ontario are separated by a distance of 3948 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from San Diego to Region of Ontario one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at C$ 182. Delta flights start at C$ 199 while deals on Air Canada start at C$ 205 one-way.

  • What are the most popular routes from San Diego to Region of Ontario?

    The most popular route from San Diego to Region of Ontario is San Diego - Toronto Pearson Intl. You may also consider San Diego - Montreal Pierre Elliott Trudeau Intl or San Diego - Toronto Island.

  • What are the most reliable airlines from San Diego to Region of Ontario?

    Consider United Airlines (90%), Air Canada (90%) or Air Canada Rouge (90%) when booking your flight. These represent the most reliable airlines when flying from San Diego to Region of Ontario.

  • What are the cheapest flights from San Diego to Region of Ontario?

    While on average a flight from San Diego to Region of Ontario is generally C$ 618, our data shows the cheapest flight currently is C$ 221. When looking at the most popular route, (San Diego - Toronto Pearson Intl), you can expect to pay C$ 541 for that flight.

  • Can I find deals for flights from San Diego to Ontario that include hotel bookings?

    Yes. In addition to deals on San Diego to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Ontario.

  • Can I find deals for business class flights from San Diego to Ontario?

    Yes. Cheapflights offers flight deals from San Diego to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Diego to Region of Ontario?

    Currently, September is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of C$ 168). Flying from San Diego to Region of Ontario in January is currently the most expensive (average of C$ 368). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for San Diego to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from San Diego to Ontario

Discover the top airline that operate flights from San Diego to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 13 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 434AverageC$ 727FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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How does Cheapflights help users find flights from San Diego to Ontario?

Cheapflights makes it easy to find San Diego to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from San Diego to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from San Diego.

Can Cheapflights find flights from San Diego to Ontario with no change fees?

Yes, we can. To see specific flights from San Diego to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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