What is the cheapest airline that flies from Ontario to San Diego?

WestJet, United Airlines, and Air Canada are the most popular carriers operating from Ontario to San Diego

How many flights depart from Region of Ontario to San Diego on average per day?

The number of flights available between Region of Ontario and San Diego is 1 per day as of November 2025. The most frequent departure time is 9:00a.m., with 100% of daily flights leaving at noon.

How long does it take to fly to San Diego?

Flight times from Region of Ontario to San Diego vary, but if you’re flying out of Toronto and flying into San Diego (one of the most popular routes), then the duration is 8h 11m on average. Another popular route from Region of Ontario to San Diego is flying from Ottawa to San Diego, which will take roughly 8h 18m. Keep in mind that layovers or delays could extend your travel time.

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 12 per week as of November 2025. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

Which airlines fly to San Diego?

Air Canada, Porter Airlines and United Airlines 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 46% of people opting to fly with this airline when travelling to San Diego. Keep in mind that there are 8 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario to San Diego Airport?

Prices for flights from Ontario to San Diego Airport are updated 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 8 as of November 2025.

How old do you have to be to fly from Ontario to San Diego Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario to San Diego Airport.

What documentation or ID do you need to fly to San Diego Airport?

The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

C$ 247 Cheap Flights from Ontario to San Diego in 2025/26

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Find the cheapest flights from Ontario to San Diego

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Enter your travel dates to find the best prices.

8:00 a.m. - 11:47 a.m.YYZ-SAN

30h 47m2 stops

12:35 p.m. - 5:58 a.m.SAN-YYZ

14h 23m2 stops

C$ 482WestJet

Find Deal

Sun, 22 Feb - Wed, 25 Feb

6:00 a.m. - 2:16 p.m.YYZ-SAN

11h 16m1 stop

6:15 a.m. - 9:29 p.m.SAN-YYZ

12h 14m1 stop

C$ 484American Airlines

Find Deal

Fri, 12 Dec - Sun, 14 Dec

12:30 p.m. - 6:30 a.m.YYZ-SAN

21h 00m2 stops

8:59 p.m. - 7:55 p.m.SAN-YYZ

19h 56m1 stop

C$ 486Multiple Airlines

Find Deal

Fri, 12 Dec - Tue, 16 Dec

7:55 p.m. - 12:11 p.m.YYZ-SAN

19h 16m1 stop

9:44 a.m. - 6:20 a.m.SAN-YYZ

17h 36m1 stop

C$ 489Multiple Airlines

Find Deal

Sat, 3 Jan - Sat, 10 Jan

1:02 p.m. - 10:31 p.m.YUL-SAN

12h 29m1 stop

10:00 p.m. - 12:12 p.m.SAN-YUL

11h 12m1 stop

C$ 531Delta

Find Deal

Thu, 22 Jan - Thu, 29 Jan

4:46 p.m. - 10:31 p.m.YUL-SAN

8h 45m1 stop

10:00 p.m. - 12:12 p.m.SAN-YUL

11h 12m1 stop

C$ 533Delta

Find Deal

Mon, 2 Feb - Sat, 7 Feb

9:45 a.m. - 7:54 p.m.YOW-SAN

13h 09m2 stops

9:00 a.m. - 9:56 p.m.SAN-YOW

9h 56m2 stops

C$ 589United Airlines

Find Deal

Fri, 9 Jan - Mon, 12 Jan

5:45 a.m. - 11:53 a.m.YAM-SAN

9h 08m1 stop

6:05 p.m. - 3:57 p.m.SAN-YAM

18h 52m2 stops

C$ 632Air Canada

Find Deal

Thu, 22 Jan - Tue, 27 Jan

8:30 a.m. - 10:44 p.m.YTZ-SAN

17h 14m2 stops

2:10 p.m. - 2:59 p.m.SAN-YTZ

21h 49m2 stops

C$ 634Air Canada

Find Deal

Tue, 24 Feb - Wed, 25 Feb

12:00 p.m. - 8:42 p.m.YOW-SAN

11h 42m2 stops

8:37 p.m. - 5:12 p.m.SAN-YOW

17h 35m2 stops

C$ 681United Airlines

Find Deal

Fri, 30 Jan - Mon, 2 Feb

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

28 Jan

YYZ9:15 a.m.Toronto Pearson Intl

5h 38m

SAN11:53 a.m.San Diego

3 Mar

SAN12:45 p.m.San Diego

9h 32m

1 stop

YYZ1:17 a.m.Toronto Pearson Intl

C$ 537

Find similar

Air Canada

14 Jan

YUL9:00 a.m.Montreal Pierre Elliott Trudeau Intl

11h 24m

1 stop

SAN5:24 p.m.San Diego

2 May

SAN8:10 a.m.San Diego

5h 29m

YUL4:39 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 545

Find similar

Air Canada

21 Jan

YYZ9:15 a.m.Toronto Pearson Intl

5h 38m

SAN11:53 a.m.San Diego

17 Mar

SAN12:45 p.m.San Diego

14h 14m

1 stop

YYZ5:59 a.m.Toronto Pearson Intl

C$ 563

Find similar

United Airlines flights from Region of Ontario to San Diego

Our best United Airlines deals on Region of Ontario to San Diego flight tickets

United Airlines

24 Feb

YUL9:15 a.m.Montreal Pierre Elliott Trudeau Intl

9h 26m

1 stop

SAN3:41 p.m.San Diego

20 Mar

SAN10:15 p.m.San Diego

14h 01m

1 stop

YUL3:16 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 552

Find similar

United Airlines

21 Jan

YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl

12h 04m

2 stops

SAN3:04 p.m.San Diego

22 Jan

SAN8:10 a.m.San Diego

8h 38m

1 stop

YUL7:48 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 554

Find similar

United Airlines

30 Jan

YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl

8h 48m

1 stop

SAN11:48 a.m.San Diego

8 Feb

SAN8:10 a.m.San Diego

8h 38m

1 stop

YUL7:48 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 558

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Sun 22/2

8:00 a.m.-11:47 a.m.

2 stops30h 47m

San Diego

Wed 25/2

12:35 p.m.-5:58 a.m.

2 stops14h 23m

C$ 482

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Fri 12/12

6:00 a.m.-2:16 p.m.

1 stop11h 16m

San Diego

Sun 14/12

6:15 a.m.-9:29 p.m.

1 stop12h 14m

C$ 484

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Fri 12/12

12:30 p.m.-6:30 a.m.

2 stops21h 00m

San Diego

Tue 16/12

8:59 p.m.-7:55 p.m.

1 stop19h 56m

C$ 486

TorontoSan Diego

YYZ - SAN

YYZSAN

Toronto Pearson Intl

Sat 3/1

7:55 p.m.-12:11 p.m.

1 stop19h 16m

San Diego

Sat 10/1

9:44 a.m.-6:20 a.m.

1 stop17h 36m

C$ 489

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 22/1

1:02 p.m.-10:31 p.m.

1 stop12h 29m

San Diego

Thu 29/1

10:00 p.m.-12:12 p.m.

1 stop11h 12m

C$ 531

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

4:46 p.m.-10:31 p.m.

1 stop8h 45m

San Diego

Sat 7/2

10:00 p.m.-12:12 p.m.

1 stop11h 12m

C$ 533

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Fri 9/1

9:45 a.m.-7:54 p.m.

2 stops13h 09m

San Diego

Mon 12/1

9:00 a.m.-9:56 p.m.

2 stops9h 56m

C$ 589

Sault Ste MarieSan Diego

YAM - SAN

YAMSAN

Sault Ste Marie

Thu 22/1

5:45 a.m.-11:53 a.m.

1 stop9h 08m

San Diego

Tue 27/1

6:05 p.m.-3:57 p.m.

2 stops18h 52m

C$ 632

TorontoSan Diego

YTZ - SAN

YTZSAN

Toronto Island

Tue 24/2

8:30 a.m.-10:44 p.m.

2 stops17h 14m

San Diego

Wed 25/2

2:10 p.m.-2:59 p.m.

2 stops21h 49m

C$ 634

OttawaSan Diego

YOW - SAN

YOWSAN

Ottawa

Fri 30/1

12:00 p.m.-8:42 p.m.

2 stops11h 42m

San Diego

Mon 2/2

8:37 p.m.-5:12 p.m.

2 stops17h 35m

C$ 681

Flights are sorted by cheapest round-trip flights first.

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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

Prices

Airlines

Other information

What is the cheapest month to fly to San Diego?

In general, April is the cheapest month to fly from Region of Ontario to San Diego. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 384. 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 C$ 390.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart on your flight to San Diego is on a Wednesday when prices can be found for as low as C$ 397. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to San Diego on Saturday is C$ 655.

What is the cheapest time of day to depart on your flight to San Diego?

Flying to San Diego from Region of Ontario in the morning is the least expensive time of day to depart. momondo users have found prices as low as C$ 467 when looking at flights departing in the morning. Flights to San Diego are more costly in the evening, with an average ticket price of C$ 811. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 C$ 498 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 C$ 430 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 16% 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	C$ 310
Fastest flight time	5h 15m
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 C$ 310. The best round-trip flight deal from Region of Ontario to San Diego found on momondo in the last 72 hours is C$ 553.

The fastest flight from Region of Ontario to San Diego takes 5h 15m

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 are updated 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 8 as of November 2025.
How old do you have to be to fly from Ontario to San Diego Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Region of Ontario to San Diego?
momondo data reveals that the most frequently booked plane model on the route from Region of Ontario to San Diego is Airbus A220-300, representing 70.40% of all bookings. The subsequent popular models are Airbus A319 at 18.88%, Boeing 737 MAX 8 at 2.33%, and Embraer 195 E2 at 2.10%.

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
Air Transat	PriceFrom C$ 242	Free Cancellation	Rating 7.8 475 reviews	Search Air Transat flights
Porter Airlines	PriceFrom C$ 248	Free Cancellation	Rating 8.0 393 reviews	Search Porter Airlines flights
American Airlines	PriceFrom C$ 298	Free Cancellation	Rating 7.2 11,045 reviews	Search American Airlines flights
United Airlines	PriceFrom C$ 309	Free Cancellation	Rating 7.4 9,028 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 326	Free Cancellation	Rating 7.1 10,462 reviews	Search Air Canada flights
Delta	PriceFrom C$ 328	Free Cancellation	Rating 7.9 8,002 reviews	Search Delta flights
WestJet	PriceFrom C$ 337	Free Cancellation	Rating 7.2 3,168 reviews	Search WestJet flights
Alaska Airlines	PriceFrom C$ 389	Free Cancellation	Rating 8.0 11,323 reviews	Search Alaska Airlines flights

El Cajon

Coronado

Borrego Springs

Chula Vista

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to San Diego?

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 San Diego from Ontario.

Can I find flights from Ontario to San Diego with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Diego from Ontario which offer a flexible booking policy as well as other useful filters and features.

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

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Flights to Houstonfrom C$ 221

Cheap flights from Ontario to San Diego from C$ 248

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 11/12. 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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Filter for what you want

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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

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Our best United Airlines deals on Region of Ontario to San Diego flight tickets

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Use the filters below to find and compare flights from Ontario to San Diego that are best for you.

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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?

What is the cheapest day to depart on your flight to San Diego?

What is the cheapest time of day to depart on your flight 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 to San Diego?

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 16% 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?

WestJet, United Airlines, and Air Canada are the most popular carriers operating from Ontario to San Diego

Which airlines fly to San Diego?

How many flights depart from Region of Ontario to San Diego on average per day?

The number of flights available between Region of Ontario and San Diego is 1 per day as of November 2025. The most frequent departure time is 9:00a.m., with 100% of daily flights leaving 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 12 per week as of November 2025. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

How long does it take to fly to San Diego?

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

Fastest flight time

Direct flights

Airports in San Diego

When did momondo last update prices for flights from Ontario to San Diego Airport?

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?

What documentation or ID do you need to fly to San Diego Airport?

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

Travelling to a place near San Diego?

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to San Diego?

Can I find flights from Ontario to San Diego with flexible booking policies on momondo?

How can momondo help me find flights from Ontario to San Diego?

I’m not ready to book a flight from Ontario to San Diego right now. Can momondo alert me if prices 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California