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.

$155 CHEAP FLIGHTS from Ontario to San Diego

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Flight Deals

Cheap Flights from Ontario to San Diego

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, Oct 19 - Thu, Oct 22

8:15 pm - 2:10 pmYOW Ottawa-SAN San Diego

20h 55m1 stop Calgary

3:30 pm - 5:35 amSAN San Diego-YOW Ottawa

11h 05m1 stop Calgary

$269WestJet

Mon, Oct 19 - Thu, Oct 22

6:15 pm - 2:10 pmYOW Ottawa-SAN San Diego

22h 55m2 stops Edmonton Calgary

3:30 pm - 5:35 amSAN San Diego-YOW Ottawa

11h 05m1 stop Calgary

$272WestJet

Fri, Oct 2 - Sat, Oct 10

5:45 pm - 8:36 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mnonstop

7:00 am - 3:27 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mnonstop

$281Air Canada

Fri, Oct 2 - Sun, Oct 11

5:45 pm - 8:36 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mnonstop

7:00 am - 3:27 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mnonstop

$285Air Canada

Wed, Sep 30 - Wed, Sep 30

9:15 am - 2:57 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

8h 42m1 stop Washington, D.C. Dulles Intl

6:28 pm - 8:16 amSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

10h 48m1 stop San Francisco

$305United Airlines

Tue, Sep 29 - Tue, Oct 6

5:20 pm - 10:41 pmYOW Ottawa-SAN San Diego

8h 21m1 stop Chicago O'Hare Intl

9:45 pm - 9:56 amSAN San Diego-YOW Ottawa

9h 11m1 stop Washington, D.C. Dulles Intl

$310United Airlines

Thu, Nov 12 - Sun, Nov 15

1:04 pm - 7:29 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

9h 25m1 stop Philadelphia

10:40 pm - 11:25 amSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

9h 45m1 stop Chicago O'Hare Intl

$310American Airlines

Tue, Sep 29 - Sat, Oct 10

12:44 pm - 9:19 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

11h 35m1 stop Atlanta Hartsfield-Jackson

1:18 pm - 11:25 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

7h 07m1 stop Detroit Metropolitan Wayne County

$310Delta

Sun, Oct 4 - Sat, Oct 10

7:00 am - 5:05 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

13h 05m1 stop Atlanta Hartsfield-Jackson

1:18 pm - 11:25 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

7h 07m1 stop Detroit Metropolitan Wayne County

$310Delta

Wed, Nov 11 - Sun, Nov 15

12:10 pm - 7:15 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

10h 05m1 stop Chicago O'Hare Intl

10:40 pm - 11:25 amSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

9h 45m1 stop Chicago O'Hare Intl

$323American Airlines

Recent last minute flight deals from Ontario to San Diego

Sat, Sep 19 - Sat, Sep 26

2:20 pm - 8:29 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

9h 09m1 stop Washington, D.C. Dulles Intl

6:15 am - 10:06 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

12h 51m2 stops Los Angeles Newark

$389United Airlines

Sat, Sep 19 - Sat, Sep 26

2:20 pm - 8:29 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

9h 09m1 stop Washington, D.C. Dulles Intl

4:55 pm - 10:40 amSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

14h 45m1 stop Chicago O'Hare Intl

$389United Airlines

Tue, Sep 15 - Mon, Oct 5

12:31 pm - 5:29 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

7h 58m1 stop Chicago O'Hare Intl

10:40 pm - 11:44 amSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

10h 04m1 stop Chicago O'Hare Intl

$408American Airlines

Tue, Sep 15 - Mon, Oct 5

7:50 am - 3:22 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

10h 32m2 stops Philadelphia Phoenix Sky Harbor Intl

10:40 pm - 11:44 amSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

10h 04m1 stop Chicago O'Hare Intl

$412American Airlines

Tue, Sep 15 - Mon, Oct 5

9:45 am - 3:49 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

9h 04m1 stop Chicago O'Hare Intl

7:00 am - 3:27 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mnonstop

$459Multiple Airlines

Tue, Sep 15 - Sun, Sep 20

8:15 am - 1:01 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

7h 46m1 stop Denver Intl

7:41 pm - 8:16 amSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

9h 35m1 stop San Francisco

$473Air Canada

Tue, Sep 15 - Sun, Sep 20

12:44 pm - 9:19 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

11h 35m1 stop Atlanta Hartsfield-Jackson

8:00 am - 11:50 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

12h 50m1 stop Atlanta Hartsfield-Jackson

$473Delta

Tue, Sep 15 - Sun, Sep 20

12:44 pm - 9:19 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

11h 35m1 stop Atlanta Hartsfield-Jackson

8:00 am - 11:50 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

12h 50m1 stop Atlanta Hartsfield-Jackson

$483Delta

Sat, Sep 19 - Sat, Sep 26

5:45 pm - 8:36 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mnonstop

10:30 pm - 2:20 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

12h 50m1 stop Chicago O'Hare Intl

$524Air Canada

Fri, Sep 18 - Mon, Oct 12

2:50 pm - 6:19 pmYYZ Toronto Pearson Intl-SAN San Diego

30h 29m2 stops Calgary San Francisco

6:10 pm - 6:39 amSAN San Diego-YYZ Toronto Pearson Intl

9h 29m1 stop Las Vegas Harry Reid Intl

$528Multiple Airlines

Recent direct flight deals from Ontario to San Diego

Fri, Oct 2 - Sat, Oct 10

5:45 pm - 8:36 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mnonstop

7:00 am - 3:27 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mnonstop

$281Air Canada

Fri, Oct 2 - Sun, Oct 11

5:45 pm - 8:36 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mnonstop

7:00 am - 3:27 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mnonstop

$285Air Canada

Fri, Oct 2 - Sat, Oct 10

5:45 pm - 8:36 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mnonstop

7:00 am - 3:27 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mnonstop

$285Air Canada

Fri, Oct 2 - Sat, Oct 10

5:45 pm - 8:36 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mnonstop

7:00 am - 3:27 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mnonstop

$308Air Canada

Sat, Oct 10 - Tue, Oct 13

5:45 pm - 8:36 pmYUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mnonstop

7:00 am - 3:27 pmSAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mnonstop

$502Lufthansa

Thu, Sep 24 - Fri, Oct 2

10:00 am - 12:16 pmYYZ Toronto Pearson Intl-SAN San Diego

5h 16mnonstop

1:10 pm - 9:10 pmSAN San Diego-YYZ Toronto Pearson Intl

5h 00mnonstop

$592Multiple Airlines

Sat, Sep 26 - Sat, Oct 3

10:00 am - 12:16 pmYYZ Toronto Pearson Intl-SAN San Diego

5h 16mnonstop

1:10 pm - 9:10 pmSAN San Diego-YYZ Toronto Pearson Intl

5h 00mnonstop

$594United Airlines

Tue, Oct 27 - Tue, Nov 17

9:20 am - 12:00 pmYYZ Toronto Pearson Intl-SAN San Diego

5h 40mnonstop

12:55 pm - 8:55 pmSAN San Diego-YYZ Toronto Pearson Intl

5h 00mnonstop

$614United Airlines

Thu, Nov 12 - Mon, Nov 16

9:20 am - 12:00 pmYYZ Toronto Pearson Intl-SAN San Diego

5h 40mnonstop

12:55 pm - 8:55 pmSAN San Diego-YYZ Toronto Pearson Intl

5h 00mnonstop

$615United Airlines

Mon, Nov 9 - Sun, Nov 15

9:20 am - 12:00 pmYYZ Toronto Pearson Intl-SAN San Diego

5h 40mnonstop

12:55 pm - 8:55 pmSAN San Diego-YYZ Toronto Pearson Intl

5h 00mnonstop

$618Multiple Airlines

Useful Info

Low season	March
High season	July
Cheapest flight	$155

Best time to beat the crowds but there is an average 14% increase in price.

Most popular time to fly with an average 2% increase in price.

Flight from Montreal 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.