Find flights
When to book
FAQs & Tips
Direct Flights
Deals

$127 Find cheap flights from Ontario to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Diego departing on 6/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 6/17
Mon 6/24

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

In the last 7 days travelers have searched 42,332,103 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Good to know

Low season

November

High season

December

Cheapest flight

$127
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 40% increase in price.
Flight from Toronto Pearson Airport to San Diego

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.

See more FAQs

Prefer to fly non-stop from Ontario to San Diego?

Find which airlines fly direct from Ontario to San Diego, which days they fly and book direct flights.

Nonstop departures

Ontario to San Diego

Monday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

Tuesday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

Wednesday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

Thursday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

Friday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

Saturday

ANA, Aer Lingus, Aeromexico, +56 more

ANA, Aer Lingus, +57 more

Sunday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

See more direct flights

Nonstop returns

San Diego to Ontario

Monday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

Tuesday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

Wednesday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

Thursday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

Friday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

Saturday

ANA, Aer Lingus, Aeromexico, +56 more

ANA, Aer Lingus, +57 more

Sunday

ANA, Aer Lingus, Aeromexico, +57 more

ANA, Aer Lingus, +58 more

See more direct flights
See more direct flights

Book cheap flights from Ontario to San Diego

Recent round-trip flight deals

6/4Tue
1 stop
10h 01mYYZ-SAN
6/25Tue
1 stop
7h 19mSAN-YYZ
$223
6/2Sun
1 stop
15h 54mYYZ-SAN
6/6Thu
1 stop
11h 09mSAN-YYZ
$233
5/31Fri
nonstopAir Canada
6h 03mYUL-SAN
6/3Mon
nonstopAir Canada
5h 34mSAN-YUL
$394
5/29Wed
nonstopAir Canada
6h 03mYUL-SAN
6/2Sun
1 stopAir Canada
8h 18mSAN-YUL
$399
6/1Sat
1 stopAmerican Airlines
10h 30mYYZ-SAN
6/3Mon
1 stopAmerican Airlines
14h 39mSAN-YYZ
$419
5/30Thu
1 stopAmerican Airlines
12h 32mYYZ-SAN
6/22Sat
1 stopAmerican Airlines
10h 48mSAN-YYZ
$420
8/26Mon
1 stopUnited Airlines
7h 30mYYZ-SAN
8/31Sat
nonstopUnited Airlines
4h 50mSAN-YYZ
$426
5/29Wed
1 stopDelta
8h 55mYUL-SAN
6/8Sat
1 stopDelta
10h 50mSAN-YUL
$435
5/30Thu
1 stopDelta
8h 47mYYZ-SAN
6/5Wed
1 stopDelta
11h 36mSAN-YYZ
$448
8/2Fri
1 stopUnited Airlines
8h 59mYYZ-SAN
8/10Sat
1 stopUnited Airlines
8h 29mSAN-YYZ
$467

Search by stops

Search by airline

Search by price

Recent one-way flight deals

6/4Tue
1 stop
15h 14mYYZ-SAN
$127
6/4Tue
1 stop
17h 18mYYZ-SAN
$130
5/28Tue
nonstopAir Canada
6h 03mYUL-SAN
$217
5/30Thu
nonstopAir Canada
6h 03mYUL-SAN
$224
6/16Sun
1 stopDelta
8h 05mYUL-SAN
$229
5/30Thu
1 stopUnited Airlines
10h 42mYUL-SAN
$230
6/16Sun
2 stopsWestJet
32h 18mYUL-SAN
$234
6/1Sat
2 stopsUnited Airlines
14h 13mYUL-SAN
$235
6/30Sun
2 stopsWestJet
16h 33mYYZ-SAN
$265
8/6Tue
1 stopDelta
11h 32mYUL-SAN
$582

Search by stops

Search by airline

Search by price

Last minute flights from Ontario to San Diego

Last minute flight, train and bus deals

5/22Wed
multi-stopAmerican Airlines
7h 43mYYZ-SAN
5/26Sun
multi-stopAmerican Airlines
14h 39mSAN-YYZ
$422
5/23Thu
nonstopAir Canada
6h 03mYUL-SAN
5/29Wed
multi-stopAir Canada
8h 00mSAN-YUL
$430
5/22Wed
multi-stopAir Canada
7h 36mYUL-SAN
5/30Thu
nonstopAir Canada
5h 34mSAN-YUL
$435
5/22Wed
multi-stop
7h 51mYYZ-SAN
5/26Sun
nonstop
4h 46mSAN-YYZ
$442
5/22Wed
multi-stopUnited Airlines
14h 38mYYZ-SAN
5/26Sun
multi-stopUnited Airlines
10h 23mSAN-YYZ
$448
5/23Thu
multi-stopUnited Airlines
14h 22mYYZ-SAN
5/26Sun
multi-stopUnited Airlines
10h 23mSAN-YYZ
$516
5/19Sun
nonstop
6h 03mYUL-SAN
5/24Fri
multi-stop
10h 06mSAN-YUL
$531
5/23Thu
multi-stopDelta
12h 44mYUL-SAN
5/26Sun
multi-stopDelta
13h 53mSAN-YUL
$782
5/19Sun
multi-stopWestJet
16h 30mYYZ-SAN
5/27Mon
multi-stopWestJet
14h 15mSAN-YYZ
$890
5/19Sun
multi-stopWestJet
16h 30mYYZ-SAN
5/27Mon
multi-stopWestJet
8h 47mSAN-YYZ
$896

Search by stops

Search by airline

Search by price

Flights to San Diego

Destination:

San Diego (SAN)United States

Return flight deals:

San Diego - Ontario

Cabin classes:

$522
$1,559
$237