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Cheap flights from Ontario to San Diego from $157

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to San Diego departing on 4/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ontario to San Diego

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to San Diego.
12:50 pm - 9:37 pmONT-SAN
8h 47m1 stop
4:30 pm - 11:59 amSAN-ONT
19h 29m1 stop
$303American Airlines
Find Deal
Thu, Apr 17 - Mon, Apr 21
12:50 pm - 9:37 pmONT-SAN
8h 47m1 stop
7:30 pm - 6:20 pmSAN-ONT
22h 50m1 stop
$333American Airlines
Find Deal
Thu, Apr 24 - Thu, May 1
11:46 am - 8:44 pmONT-SAN
8h 58m1 stop
9:00 am - 3:32 pmSAN-ONT
6h 32m1 stop
$343Alaska Airlines
Find Deal
Wed, Apr 23 - Wed, Apr 30
7:00 am - 11:59 pmONT-SAN
16h 59m1 stop
7:00 am - 3:32 pmSAN-ONT
8h 32m1 stop
$392Alaska Airlines
Find Deal
Sun, Apr 20 - Sat, May 3
1:20 pm - 12:18 amONT-SAN
10h 58m1 stop
10:00 am - 5:51 pmSAN-ONT
7h 51m1 stop
$403United Airlines
Find Deal
Fri, Apr 11 - Tue, Apr 15
11:46 am - 6:59 pmONT-SAN
7h 13m1 stop
5:26 pm - 11:59 pmSAN-ONT
6h 33m1 stop
$422Alaska Airlines
Find Deal
Fri, Apr 25 - Fri, May 2
1:36 pm - 10:45 pmONT-SAN
9h 09m1 stop
1:30 pm - 10:45 pmSAN-ONT
9h 15m1 stop
$423United Airlines
Find Deal
Mon, Jun 2 - Tue, Jun 3
6:00 am - 2:27 pmONT-SAN
8h 27m1 stop
6:00 pm - 11:59 pmSAN-ONT
5h 59m1 stop
$437Alaska Airlines
Find Deal
Sat, Apr 19 - Sat, Apr 19
7:05 am - 11:56 amONT-SAN
4h 51m1 stop
2:00 pm - 11:59 pmSAN-ONT
9h 59m1 stop
Sat, Apr 12 - Sat, Apr 12
6:39 pm - 7:30 amONT-SAN
12h 51m2 stops
9:06 pm - 2:50 pmSAN-ONT
17h 44m2 stops
Wed, Apr 16 - Thu, Apr 17

American Airlines flights from Ontario to San Diego

Our best American Airlines deals on Ontario to San Diego flight tickets
American Airlines
Apr 17
ONT12:50 pmOntario
8h 47m
1 stop
SAN9:37 pmSan Diego
Apr 21
SAN4:30 pmSan Diego
19h 29m
1 stop
ONT11:59 amOntario
American Airlines
Apr 24
ONT12:50 pmOntario
8h 47m
1 stop
SAN9:37 pmSan Diego
May 1
SAN7:30 pmSan Diego
22h 50m
1 stop
ONT6:20 pmOntario
American Airlines
Jun 8
ONT5:07 pmOntario
15h 19m
1 stop
SAN8:26 amSan Diego
Jun 9
SAN7:58 pmSan Diego
12h 39m
1 stop
ONT8:37 amOntario

Alaska Airlines flights from Ontario to San Diego

Our best Alaska Airlines deals on Ontario to San Diego flight tickets
Alaska Airlines
Apr 23
ONT11:46 amOntario
8h 58m
1 stop
SAN8:44 pmSan Diego
Apr 30
SAN9:00 amSan Diego
6h 32m
1 stop
ONT3:32 pmOntario
Alaska Airlines
Apr 20
ONT7:00 amOntario
16h 59m
1 stop
SAN11:59 pmSan Diego
May 3
SAN7:00 amSan Diego
8h 32m
1 stop
ONT3:32 pmOntario
Alaska Airlines
Apr 25
ONT11:46 amOntario
7h 13m
1 stop
SAN6:59 pmSan Diego
May 2
SAN5:26 pmSan Diego
6h 33m
1 stop
ONT11:59 pmOntario

See travel insights to San Diego from

How to get the cheapest flight ticket from Ontario to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Ontario to San Diego is on a Thursday. Travelers who choose to depart for San Diego on a Thursday will often find tickets for as low as $200. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $399. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is at noon when flights can be purchased for as low as $179. Flights in the evening are often more expensive with an average ticket price of $244.

When to book flights from Ontario to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to San Diego (ONT to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to San Diego

Best Price Found

$157

Fastest flight time

3h 51m

Direct flights

None

Airports in San Diego

1 airport
The best one-way flight to San Diego from Ontario in the past 72 hours is $157. The best round-trip flight deal from Ontario to San Diego found on momondo in the last 72 hours is $303.
The fastest flight from Ontario to San Diego takes 3h 51m
There are no direct flights from Ontario to San Diego. Popular non-direct route for this connection is Ontario Airport - San Diego Airport.
There is 1 airport near San Diego: San Diego (SAN)

  • How far is Ontario to San Diego by plane?

    A flight from Ontario to San Diego will travel around 97.3 mi. By plane, this route typically takes 3h 51m.

  • When did momondo last update prices for flights from Ontario Airport to San Diego Airport?

    Prices for flights from Ontario Airport to San Diego Airport are updated daily.

  • How old do you have to be to fly from Ontario Airport to San Diego Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The necessary travel and health documents for your San Diego Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Chula Vista
Coronado
El Cajon
Julian
La Mesa
National City
Imperial Beach
Lemon Grove
San Ysidro
Borrego Springs
Poway
Alpine
Santee

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to San Diego?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to San Diego. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to San Diego with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to San Diego flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to San Diego?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Diego from Ontario.

I’m not ready to book a flight from Ontario to San Diego right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to San Diego flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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