Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from San Diego to Ontario from C$ 156

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 30/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — YYZ
26 Feb — 5 Mar1
1 adult

Cheap 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 21 February 2025.

Round-trip from

C$ 254

One-way from

C$ 158

Popular in

May

Cheapest in

January

Average price

C$ 538

Good round-trip deal

C$ 194 or less

Good one-way deal

C$ 196 or less
11/3-13/3
  • 11/3-13/3
  • 2 total stops
  • 34h 23m total
  • San Diego to Ontario
Search Deals
25/2
  • 25/2
  • 2 total stops
  • 21h 53m total
  • San Diego to Ontario
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
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

Find flight deals from San Diego to Ontario

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 21 February 2025.

Wed 2/48:07 p.m.SAN - YYZ
1 stop7h 36mMultiple Airlines
Mon 7/48:00 p.m.YYZ - SAN
1 stop14h 16mMultiple Airlines
Deal found 21/2C$ 253
Wed 2/42:05 p.m.SAN - YYZ
Nonstop4h 45mPorter Airlines
Mon 7/410:20 a.m.YYZ - SAN
Nonstop5h 45mPorter Airlines
Deal found 20/2C$ 361
Thu 7/811:15 a.m.SAN - YUL
1 stop10h 28mWestJet
Fri 22/87:00 a.m.YUL - SAN
1 stop9h 20mWestJet
Deal found 19/2C$ 406
Tue 25/312:40 p.m.SAN - YYZ
Nonstop4h 50mUnited Airlines
Thu 27/39:25 a.m.YYZ - SAN
Nonstop5h 38mUnited Airlines
Deal found 21/2C$ 419
Thu 21/811:15 a.m.SAN - YYZ
1 stop8h 39mWestJet
Mon 1/96:30 a.m.YYZ - SAN
1 stop9h 50mWestJet
Deal found 20/2C$ 422
Sat 17/58:10 a.m.SAN - YUL
Nonstop5h 25mMultiple Airlines
Fri 23/57:00 a.m.YUL - SAN
1 stop9h 20mMultiple Airlines
Deal found 19/2C$ 426
Fri 28/32:05 p.m.SAN - YUL
1 stop7h 30mPorter Airlines
Sun 6/46:10 p.m.YUL - SAN
2 stops21h 55mPorter Airlines
Deal found 20/2C$ 450
Sun 23/36:20 a.m.SAN - YYZ
1 stop6h 34mDelta
Fri 30/59:45 a.m.YYZ - SAN
1 stop7h 27mDelta
Deal found 20/2C$ 455
Wed 19/310:45 p.m.SAN - YUL
1 stop13h 40mAmerican Airlines
Wed 26/312:55 p.m.YUL - SAN
1 stop10h 29mAmerican Airlines
Deal found 20/2C$ 459
Thu 15/58:10 a.m.SAN - YTZ
1 stop10h 25mAir Canada
Mon 19/512:25 p.m.YTZ - SAN
1 stop10h 20mAir Canada
Deal found 20/2C$ 463
Mon 21/49:08 p.m.SAN - YOW
2 stops32h 12mMultiple Airlines
Fri 25/46:10 p.m.YOW - SAN
1 stop9h 32mMultiple Airlines
Deal found 21/2C$ 467
Sun 23/26:15 a.m.SAN - YTZ
2 stops9h 38mMultiple Airlines
Sun 2/31:50 p.m.YTZ - SAN
2 stops22h 11mMultiple Airlines
Deal found 20/2C$ 472

Find flights from San Diego to Ontario within your budget

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 21 February 2025.

Fly from

San Diego

Fly to

Ontario

Route

Depart

Return

Price

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Wed 2/4

8:07 p.m.-6:43 a.m.

1 stop7h 36m

Toronto Pearson Intl

Mon 7/4

8:00 p.m.-7:16 a.m.

1 stop14h 16m

C$ 253

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Wed 2/4

2:05 p.m.-9:50 p.m.

Nonstop4h 45m

Toronto Pearson Intl

Mon 7/4

10:20 a.m.-1:05 p.m.

Nonstop5h 45m

C$ 361

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Mon 26/5

1:55 p.m.-12:37 a.m.

1 stop7h 42m

Montreal Pierre Elliott Trudeau Intl

Wed 4/6

7:00 a.m.-1:20 p.m.

1 stop9h 20m

C$ 418

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Tue 25/3

12:40 p.m.-8:30 p.m.

Nonstop4h 50m

Toronto Pearson Intl

Thu 27/3

9:25 a.m.-12:03 p.m.

Nonstop5h 38m

C$ 419

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Fri 28/3

2:05 p.m.-12:35 a.m.

1 stop7h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 6/4

6:10 p.m.-1:05 p.m.

2 stops21h 55m

C$ 450

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Thu 17/7

11:15 a.m.-12:43 a.m.

1 stop10h 28m

Montreal Pierre Elliott Trudeau Intl

Sun 20/7

7:00 a.m.-1:20 p.m.

1 stop9h 20m

C$ 452

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Sun 23/3

6:20 a.m.-3:54 p.m.

1 stop6h 34m

Toronto Pearson Intl

Wed 28/5

9:45 a.m.-2:12 p.m.

1 stop7h 27m

C$ 455

San DiegoMontreal

SAN - YUL

SANYUL

San Diego

Wed 19/3

10:45 p.m.-3:25 p.m.

1 stop13h 40m

Montreal Pierre Elliott Trudeau Intl

Mon 24/3

4:00 p.m.-10:13 p.m.

1 stop9h 13m

C$ 459

San DiegoToronto

SAN - YTZ

SANYTZ

San Diego

Thu 15/5

8:10 a.m.-9:35 p.m.

1 stop10h 25m

Toronto Island

Mon 19/5

12:25 p.m.-7:45 p.m.

1 stop10h 20m

C$ 463

San DiegoToronto

SAN - YYZ

SANYYZ

San Diego

Sun 27/4

12:35 p.m.-8:28 p.m.

Nonstop4h 53m

Toronto Pearson Intl

Sun 4/5

12:00 p.m.-7:45 p.m.

1 stop10h 45m

C$ 464

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/2

Showing 1-10 of 38 results
1
2
3
4

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.

Travel insights for flights from San Diego to Ontario

Get recent, data-driven insights about flights from San Diego to Ontario including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of C$ 167). Flying from San Diego to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 21 February 2025.

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.

Weekly flight availability from San Diego to Region of Ontario

Explore weekly flight availability from San Diego to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 February 2025.

The most flights from SAN to CAON are scheduled on a Monday (4 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 21 February 2025.
Read through reviews of airlines operating flights from San Diego to Ontario, such as Alaska Airlines, Delta and Porter Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,697 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,213 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Porter Airlines
7.9
Good
276 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Air Transat
7.8
Good
380 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,759 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • 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 WestJet, which is currently one of the cheapest options available, starting at C$ 161. United Airlines flights start at C$ 175 while deals on American Airlines start at C$ 189 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 Porter Airlines (53%), Air Transat (53%) or Air Canada (33%) 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$ 244, our data shows the cheapest flight currently is C$ 162. When looking at the most popular route, (San Diego - Toronto Pearson Intl), you can expect to pay C$ 256 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, January is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of C$ 167). Flying from San Diego to Region of Ontario in July is currently the most expensive (average of C$ 258). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Vancouver Intl flights
San Francisco to Vancouver Intl flights
Los Angeles to Pearson Intl flights
San Francisco to Pearson Intl flights
San Diego to Vancouver Intl flights
San Francisco to Calgary flights
Los Angeles to Pierre Elliott Trudeau Intl flights
San Francisco to Pierre Elliott Trudeau Intl flights
Los Angeles to Calgary flights
Santa Ana to Vancouver Intl flights
Ontario to Vancouver Intl flights
Sacramento to Vancouver Intl flights
San Diego to Pearson Intl flights
Las Vegas to Vancouver Intl flights
San Jose to Vancouver Intl flights
San Diego to Calgary flights
San Francisco to Abbotsford flights
Las Vegas to Pearson Intl flights
Ontario to Calgary flights
Los Angeles to Abbotsford flights
Ontario to Pearson Intl flights
Los Angeles to Toronto Island flights
San Jose to Pearson Intl flights
San Francisco to Toronto Island flights
Las Vegas to Calgary flights
Santa Ana to Calgary flights
Los Angeles to Edmonton flights
Oakland to Vancouver Intl flights
San Jose to Calgary flights
Sacramento to Pearson Intl flights
San Diego to Pierre Elliott Trudeau Intl flights
Burbank to Vancouver Intl flights
Oakland to Pearson Intl flights
Palm Springs to Vancouver Intl flights
Ontario to Pierre Elliott Trudeau Intl flights
San Francisco to Edmonton flights
San Diego to Abbotsford flights
Las Vegas to Pierre Elliott Trudeau Intl flights
San Francisco to Halifax flights
Sacramento to Calgary flights
Ontario to Edmonton flights
San Francisco to Québec City flights
Los Angeles to Region of Waterloo Intl flights
Palm Springs to Calgary flights
Oakland to Calgary flights
San Francisco to Ottawa flights
San Francisco to Victoria flights
Sacramento to Abbotsford flights
San Francisco to Kelowna flights

Top 2 airlines flying from San Diego to Ontario

Discover the top 2 airlines 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 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 179AverageC$ 750FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 297AverageC$ 446FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

Can Cheapflights notify me if prices for flights from San Diego to Ontario become cheaper?

Not ready to book yet? You can track prices for flights from San Diego to Ontario on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.