Find Deals on Flights from Ontario to San Diego (ONT - SAN)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Ontario to San Diego

(Round-trip)
Depart: Fri Apr 14 2017 Return: Sat Apr 15 2017 Trip spans 2 days
Alaska Airlines
Alaska Airlines
ONT
2:20a
SAN
7:47p
17h 27m
1 stop
SAN
2:25p
ONT
6:23a
15h 58m
1 stop
Depart: Fri Apr 7 2017 Return: Sat Apr 8 2017 Trip spans 2 days
United
United
ONT
6:45a
SAN
8:05p
13h 20m
1 stop
SAN
11:23a
ONT
8:06p
8h 43m
1 stop
Depart: Tue Mar 14 2017 Return: Sun Apr 2 2017 Trip spans 20 days
American Airlines
American Airlines
ONT
8:45a
SAN
11:14a
26h 29m
1 stop
SAN
2:20a
ONT
2:28p
12h 08m
1 stop
Depart: Fri Mar 31 2017 Return: Sat Apr 1 2017 Trip spans 2 days
American Airlines
American Airlines
ONT
8:45a
SAN
2:21p
5h 36m
1 stop
SAN
5:55a
ONT
5:39p
11h 44m
1 stop
Depart: Fri Mar 24 2017 Return: Sat Mar 25 2017 Trip spans 2 days
United
United
ONT
4:10p
SAN
8:24p
4h 14m
1 stop
SAN
11:15a
ONT
4:49p
5h 34m
1 stop
Depart: Wed Jul 12 2017 Return: Tue Jul 18 2017 Trip spans 7 days
United
United
ONT
2:00a
SAN
5:29a
3h 29m
1 stop
SAN
4:30p
ONT
7:58p
3h 28m
1 stop
Depart: Fri Mar 3 2017 Return: Mon Mar 6 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
ONT
3:59p
SAN
3:45a
11h 46m
1 stop
SAN
2:35p
ONT
4:59a
14h 24m
1 stop
Depart: Fri Feb 24 2017 Return: Sun Feb 26 2017 Trip spans 3 days
American Airlines
American Airlines
ONT
4:55a
SAN
1:21p
8h 26m
1 stop
SAN
2:25p
ONT
1:28p
23h 03m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

Ontario
$372
Destination

San Diego
$372