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.

C$ 221 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

Fri, 2 Oct - Sat, 10 Oct

5:45 p.m. - 8:36 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mdirect

7:00 a.m. - 3:27 p.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mdirect

C$ 391Air Canada

Fri, 2 Oct - Sun, 11 Oct

5:45 p.m. - 8:36 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mdirect

7:00 a.m. - 3:27 p.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mdirect

C$ 397Air Canada

Wed, 25 Nov - Wed, 2 Dec

6:40 a.m. - 12:40 p.m.YXU London-SAN San Diego

9h 00m1 stop Calgary

1:30 p.m. - 5:35 a.m.SAN San Diego-YXU London

13h 05m1 stop Calgary

C$ 398WestJet

Sat, 5 Dec - Sun, 13 Dec

6:40 a.m. - 12:40 p.m.YXU London-SAN San Diego

9h 00m1 stop Calgary

1:30 p.m. - 5:35 a.m.SAN San Diego-YXU London

13h 05m1 stop Calgary

C$ 405WestJet

Wed, 30 Sep - Sun, 11 Oct

2:20 p.m. - 8:29 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

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

7:00 a.m. - 3:27 p.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mdirect

C$ 416Multiple Airlines

Wed, 30 Sep - Wed, 30 Sep

9:15 a.m. - 2:57 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

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

6:28 p.m. - 8:16 a.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

10h 48m1 stop San Francisco

C$ 424United Airlines

Wed, 21 Oct - Thu, 22 Oct

6:35 p.m. - 10:17 a.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

18h 42m1 stop San Francisco

12:40 p.m. - 8:16 a.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

16h 36m1 stop San Francisco

C$ 427United Airlines

Thu, 5 Nov - Sun, 8 Nov

1:04 p.m. - 9:40 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

11h 36m1 stop Philadelphia

10:40 p.m. - 11:25 a.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

9h 45m1 stop Chicago O'Hare Intl

C$ 430American Airlines

Thu, 12 Nov - Sun, 15 Nov

1:04 p.m. - 7:29 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

9h 25m1 stop Philadelphia

10:40 p.m. - 11:25 a.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

9h 45m1 stop Chicago O'Hare Intl

C$ 431American Airlines

Sun, 18 Oct - Thu, 22 Oct

2:00 p.m. - 1:16 p.m.YOW Ottawa-SAN San Diego

26h 16m2 stops Calgary San Francisco

3:30 p.m. - 5:35 a.m.SAN San Diego-YOW Ottawa

11h 05m1 stop Calgary

C$ 470Multiple Airlines

Recent last minute flight deals from Ontario to San Diego

Sat, 19 Sep - Sat, 26 Sep

2:20 p.m. - 8:29 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

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

6:15 a.m. - 10:06 p.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

12h 51m2 stops Los Angeles Newark

C$ 541United Airlines

Sat, 19 Sep - Sat, 26 Sep

3:25 p.m. - 12:29 a.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

12h 04m2 stops Newark San Francisco

7:41 p.m. - 10:40 a.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

11h 59m2 stops San Francisco Chicago O'Hare Intl

C$ 541United Airlines

Fri, 18 Sep - Mon, 21 Sep

5:34 p.m. - 11:25 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

8h 51m1 stop Chicago O'Hare Intl

10:46 p.m. - 11:44 a.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

9h 58m1 stop Chicago O'Hare Intl

C$ 671American Airlines

Thu, 17 Sep - Sun, 31 Jan

3:45 p.m. - 9:48 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

9h 03m1 stop Dallas/Fort Worth

10:27 p.m. - 11:26 a.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

9h 59m1 stop Chicago O'Hare Intl

C$ 675American Airlines

Fri, 18 Sep - Mon, 21 Sep

5:45 p.m. - 8:36 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mdirect

1:10 p.m. - 12:31 a.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

8h 21m1 stop Toronto Pearson Intl

C$ 700Air Canada

Sat, 19 Sep - Sat, 26 Sep

5:45 p.m. - 8:36 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mdirect

10:30 p.m. - 2:20 p.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

12h 50m1 stop Chicago O'Hare Intl

C$ 729Air Canada

Mon, 21 Sep - Sat, 26 Sep

7:00 a.m. - 2:10 p.m.YYZ Toronto Pearson Intl-SAN San Diego

10h 10m1 stop Calgary

1:38 p.m. - 6:55 p.m.SAN San Diego-YYZ Toronto Pearson Intl

26h 17m2 stops San Francisco Calgary

C$ 743Multiple Airlines

Sun, 20 Sep - Sun, 27 Sep

6:00 a.m. - 10:18 a.m.YYZ Toronto Pearson Intl-SAN San Diego

7h 18m1 stop Detroit Metropolitan Wayne County

10:20 p.m. - 8:53 a.m.SAN San Diego-YYZ Toronto Pearson Intl

7h 33m1 stop Detroit Metropolitan Wayne County

C$ 775Delta

Mon, 21 Sep - Mon, 28 Sep

4:45 p.m. - 3:59 p.m.YYZ Toronto Pearson Intl-SAN San Diego

26h 14m2 stops Nashville Intl Denver Intl

9:03 p.m. - 8:09 p.m.SAN San Diego-YYZ Toronto Pearson Intl

20h 06m1 stop Las Vegas Harry Reid Intl

C$ 779Multiple Airlines

Sun, 20 Sep - Mon, 28 Sep

6:15 a.m. - 10:44 a.m.YYZ Toronto Pearson Intl-SAN San Diego

7h 29m1 stop Minneapolis St Paul

9:45 p.m. - 12:19 p.m.SAN San Diego-YYZ Toronto Pearson Intl

11h 34m1 stop Atlanta Hartsfield-Jackson

C$ 786Delta

Recent direct flight deals from Ontario to San Diego

Fri, 2 Oct - Sat, 10 Oct

5:45 p.m. - 8:36 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mdirect

7:00 a.m. - 3:27 p.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mdirect

C$ 391Air Canada

Fri, 2 Oct - Sun, 11 Oct

5:45 p.m. - 8:36 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mdirect

7:00 a.m. - 3:27 p.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mdirect

C$ 397Air Canada

Sat, 26 Sep - Mon, 5 Oct

5:45 p.m. - 8:36 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mdirect

7:00 a.m. - 3:27 p.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mdirect

C$ 587Air Canada

Mon, 9 Nov - Sun, 15 Nov

9:20 a.m. - 12:00 p.m.YYZ Toronto Pearson Intl-SAN San Diego

5h 40mdirect

12:55 p.m. - 8:55 p.m.SAN San Diego-YYZ Toronto Pearson Intl

5h 00mdirect

C$ 616Air Canada

Sat, 10 Oct - Tue, 13 Oct

5:45 p.m. - 8:36 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mdirect

7:00 a.m. - 3:27 p.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mdirect

C$ 698Lufthansa

Sat, 26 Sep - Mon, 5 Oct

5:45 p.m. - 8:36 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SAN San Diego

5h 51mdirect

7:00 a.m. - 3:27 p.m.SAN San Diego-YUL Montreal Pierre Elliott Trudeau Intl

5h 27mdirect

C$ 726Multiple Airlines

Tue, 27 Oct - Tue, 17 Nov

9:20 a.m. - 12:00 p.m.YYZ Toronto Pearson Intl-SAN San Diego

5h 40mdirect

12:55 p.m. - 8:55 p.m.SAN San Diego-YYZ Toronto Pearson Intl

5h 00mdirect

C$ 854United Airlines

Thu, 12 Nov - Mon, 16 Nov

9:20 a.m. - 12:00 p.m.YYZ Toronto Pearson Intl-SAN San Diego

5h 40mdirect

12:55 p.m. - 8:55 p.m.SAN San Diego-YYZ Toronto Pearson Intl

5h 00mdirect

C$ 856United Airlines

Tue, 27 Oct - Wed, 18 Nov

9:20 a.m. - 12:00 p.m.YYZ Toronto Pearson Intl-SAN San Diego

5h 40mdirect

12:55 p.m. - 8:55 p.m.SAN San Diego-YYZ Toronto Pearson Intl

5h 00mdirect

C$ 856United Airlines

Mon, 9 Nov - Sun, 15 Nov

9:20 a.m. - 12:00 p.m.YYZ Toronto Pearson Intl-SAN San Diego

5h 40mdirect

12:55 p.m. - 8:55 p.m.SAN San Diego-YYZ Toronto Pearson Intl

5h 00mdirect

C$ 860Multiple Airlines

Useful Info

Low season	September
High season	December
Cheapest flight	C$ 221

Best time to beat the crowds but there is an average 4% increase in price.

Most popular time to fly (9% more expensive on average)

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.