How does KAYAK find such low prices on flights from Ontario to San Diego?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to San Diego. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to San Diego?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Ontario is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Ontario to San Diego?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Ontario with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to San Diego?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$121 CHEAP FLIGHTS from Ontario to San Diego

KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

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Cheap Flights from Ontario to San Diego

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Ontario to San Diego

Mon, Aug 25 - Thu, Aug 28

6:00 am - 1:20 pmYKF-SAN

10h 20m1 stop

11:15 am - 12:46 amSAN-YKF

10h 31m1 stop

$214WestJet

Find Deal

Thu, Jul 10 - Thu, Jul 17

6:00 am - 1:20 pmYHM-SAN

10h 20m1 stop

11:15 am - 12:41 amSAN-YHM

10h 26m1 stop

$233WestJet

Find Deal

Tue, Jul 8 - Thu, Jul 10

8:05 pm - 6:19 pmYYZ-SAN

25h 14m1 stop

2:05 pm - 5:51 amSAN-YYZ

12h 46m2 stops

$266

Find Deal

Tue, Jul 15 - Tue, Jul 15

6:05 am - 1:08 pmYOW-SAN

10h 03m1 stop

10:20 pm - 2:04 pmSAN-YOW

12h 44m1 stop

$267United Airlines

Find Deal

Sat, Jul 19 - Sat, Jul 26

6:10 am - 8:11 pmYYZ-SAN

17h 01m1 stop

9:40 pm - 9:19 amSAN-YYZ

8h 39m1 stop

$269United Airlines

Find Deal

Thu, Jul 10 - Mon, Jul 14

3:40 pm - 12:09 amYUL-SAN

11h 29m1 stop

4:29 pm - 2:45 pmSAN-YUL

19h 16m1 stop

$272American Airlines

Find Deal

Tue, Jul 15 - Wed, Jul 23

6:30 am - 1:20 pmYYZ-SAN

9h 50m1 stop

7:04 pm - 6:12 amSAN-YYZ

32h 08m2 stops

$276

Find Deal

Wed, Aug 13 - Sun, Aug 17

7:30 am - 4:13 pmYUL-SAN

11h 43m1 stop

8:10 am - 4:39 pmSAN-YUL

5h 29mnonstop

$279Air Canada

Find Deal

Thu, Sep 18 - Sun, Sep 21

4:45 pm - 7:35 pmYUL-SAN

5h 50mnonstop

8:10 am - 4:40 pmSAN-YUL

5h 30mnonstop

$281Air Canada

Find Deal

Fri, Jul 4 - Sun, Jul 6

6:49 am - 4:51 pmYYZ-SAN

13h 02m1 stop

6:20 am - 5:15 pmSAN-YYZ

7h 55m1 stop

$326American Airlines

Find Deal

Useful Info

Low season	May
High season	December

Best time to beat the crowds with an average 20% drop in price.

Most popular time to fly with an average 15% increase in price.

How does KAYAK find such low prices on flights from Ontario to San Diego?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to San Diego.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to San Diego?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Ontario to San Diego?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Ontario with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to San Diego?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to San Diego

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in San Diego

San Diego (SAN)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

$121 Find Cheap Flights from Ontario to San Diego

KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

Cheap Flights from Ontario to San Diego

Recent round-trip flight deals from Ontario to San Diego

Recent one-way flight deals from Ontario to San Diego

Recent last minute flight deals from Ontario to San Diego

Recent direct flight deals from Ontario to San Diego

Good to know

FAQs for booking flights from Ontario to San Diego

How does KAYAK find such low prices on flights from Ontario to San Diego?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to San Diego.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to San Diego?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Ontario to San Diego?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Ontario with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to San Diego?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to San Diego

Information on the airport you'll fly into in San Diego

Cabin class types available on flights to Ontario

Complete your trip to San Diego with a hotel stay or car rental

Find direct flights for San Diego

Flights to other popular destinations

Flights from domestic origins to San Diego

Choose which airport to fly into in San Diego

Find deals for your return flight