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Cheap flights from San Diego to Los Angeles from $61

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Los Angeles departing on 6/3. 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 San Diego to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
9:43 am - 3:08 pm
SAN
-
ONT
5h 25m
1 stop
Frontier Logo
3:34 pm - 8:48 am
ONT
-
SAN
17h 14m
1 stop
$129Frontier
Wed, Jun 10 - Wed, Jun 17
Frontier Logo
9:43 am - 3:09 pm
SAN
-
ONT
5h 26m
1 stop
Frontier Logo
3:30 pm - 8:48 am
ONT
-
SAN
17h 18m
1 stop
$179Frontier
Sat, Jun 6 - Mon, Jun 8
Frontier Logo
9:43 am - 3:08 pm
SAN
-
ONT
5h 25m
1 stop
Frontier Logo
3:34 pm - 8:48 am
ONT
-
SAN
17h 14m
1 stop
$182Frontier
Fri, Jun 19 - Tue, Jun 23
Frontier Logo
9:43 am - 7:32 pm
SAN
-
ONT
9h 49m
1 stop
Frontier Logo
3:30 pm - 3:32 pm
ONT
-
SAN
24h 02m
2 stops
$202Frontier
Sat, Jun 6 - Mon, Jun 8
Frontier Logo
9:43 am - 3:08 pm
SAN
-
ONT
5h 25m
1 stop
Frontier Logo
8:36 pm - 12:15 am
ONT
-
SAN
27h 39m
1 stop
$203Frontier
Sat, Jun 20 - Mon, Jun 29
Frontier Logo
8:32 pm - 10:43 am
SAN
-
ONT
14h 11m
1 stop
Frontier Logo
9:49 pm - 12:25 pm
ONT
-
SAN
14h 36m
1 stop
$216Frontier
Sun, Sep 13 - Wed, Sep 16
Frontier Logo
9:43 am - 7:51 pm
SAN
-
ONT
10h 08m
1 stop
Frontier Logo
3:34 pm - 3:52 pm
ONT
-
SAN
24h 18m
2 stops
$236Frontier
Fri, Jun 19 - Tue, Jun 23
Frontier Logo
9:43 am - 7:51 pm
SAN
-
ONT
10h 08m
1 stop
Frontier Logo
11:58 am - 8:48 am
ONT
-
SAN
20h 50m
1 stop
$248Frontier
Sat, Jun 13 - Sat, Jun 20
Frontier Logo
9:43 pm - 10:43 am
SAN
-
ONT
13h 00m
2 stops
Frontier Logo
9:49 pm - 12:25 pm
ONT
-
SAN
14h 36m
1 stop
$267Frontier
Sun, Sep 13 - Wed, Sep 16
Frontier Logo
9:43 am - 3:09 pm
SAN
-
ONT
5h 26m
1 stop
Frontier Logo
3:30 pm - 8:48 am
ONT
-
SAN
17h 18m
1 stop
$277Frontier
Thu, Jun 4 - Mon, Jun 8

Frontier flights from San Diego to Ontario

Our best Frontier deals on San Diego to Ontario flight tickets
Frontier
Jun 10
SAN9:43 amSan Diego
5h 25m
1 stop
ONT3:08 pmOntario
Jun 17
ONT3:34 pmOntario
17h 14m
1 stop
SAN8:48 amSan Diego
$129
Frontier
Jun 6
SAN9:43 amSan Diego
5h 26m
1 stop
ONT3:09 pmOntario
Jun 8
ONT3:30 pmOntario
17h 18m
1 stop
SAN8:48 amSan Diego
$179
Frontier
Jun 19
SAN9:43 amSan Diego
5h 25m
1 stop
ONT3:08 pmOntario
Jun 23
ONT3:34 pmOntario
17h 14m
1 stop
SAN8:48 amSan Diego
$182

Alaska Airlines flights from San Diego to Ontario

Our best Alaska Airlines deals on San Diego to Ontario flight tickets
Alaska Airlines
Jun 6
SAN12:12 pmSan Diego
6h 56m
1 stop
ONT7:08 pmOntario
Jun 7
ONT3:35 pmOntario
17h 15m
1 stop
SAN8:50 amSan Diego
$322
Alaska Airlines
Jun 30
SAN8:24 amSan Diego
9h 39m
1 stop
ONT6:03 pmOntario
Jul 12
ONT6:43 pmOntario
13h 32m
1 stop
SAN8:15 amSan Diego
$413
Alaska Airlines
Jun 5
SAN8:04 pmSan Diego
15h 06m
1 stop
ONT11:10 amOntario
Jun 11
ONT6:43 pmOntario
13h 32m
1 stop
SAN8:15 amSan Diego
$443

momondo Fare Finder

 
Customize your flight search to find flights from San Diego to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 18, 2026.
Use the filters below to find and compare flights from San Diego to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

San DiegoOntario

SAN - ONT

SANONT

San Diego

Wed 6/10

9:43 am-3:08 pm

1 stop5h 25m

Ontario

Wed 6/17

3:34 pm-8:48 am

1 stop17h 14m

$129

San DiegoOntario

SAN - ONT

SANONT

San Diego

Sat 6/6

9:43 am-3:09 pm

1 stop5h 26m

Ontario

Mon 6/8

3:30 pm-8:48 am

1 stop17h 18m

$179

San DiegoOntario

SAN - ONT

SANONT

San Diego

Fri 6/19

9:43 am-3:08 pm

1 stop5h 25m

Ontario

Tue 6/23

3:34 pm-8:48 am

1 stop17h 14m

$182

San DiegoOntario

SAN - ONT

SANONT

San Diego

Sat 6/6

9:43 am-7:32 pm

1 stop9h 49m

Ontario

Mon 6/8

3:30 pm-3:32 pm

2 stops24h 02m

$202

San DiegoOntario

SAN - ONT

SANONT

San Diego

Sat 6/20

9:43 am-3:08 pm

1 stop5h 25m

Ontario

Mon 6/29

8:36 pm-12:15 am

1 stop27h 39m

$203

San DiegoOntario

SAN - ONT

SANONT

San Diego

Sun 9/13

8:32 pm-10:43 am

1 stop14h 11m

Ontario

Wed 9/16

9:49 pm-12:25 pm

1 stop14h 36m

$216

San DiegoOntario

SAN - ONT

SANONT

San Diego

Fri 6/19

9:43 am-7:51 pm

1 stop10h 08m

Ontario

Tue 6/23

3:34 pm-3:52 pm

2 stops24h 18m

$236

San DiegoOntario

SAN - ONT

SANONT

San Diego

Sat 6/13

9:43 am-7:51 pm

1 stop10h 08m

Ontario

Sat 6/20

11:58 am-8:48 am

1 stop20h 50m

$248

San DiegoOntario

SAN - ONT

SANONT

San Diego

Sun 9/13

9:43 pm-10:43 am

2 stops13h 00m

Ontario

Wed 9/16

9:49 pm-12:25 pm

1 stop14h 36m

$267

San DiegoOntario

SAN - ONT

SANONT

San Diego

Thu 6/4

9:43 am-3:09 pm

1 stop5h 26m

Ontario

Mon 6/8

3:30 pm-8:48 am

1 stop17h 18m

$277

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

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

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 airline that flies from San Diego to Ontario?

Alaska Airlines is the most popular carrier operating from San Diego to Ontario

What airlines fly to Ontario?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Ontario from San Diego according to our data. United Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 3 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When to book flights from San Diego to Ontario

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

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

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

Fastest flight time

3h 20m

Direct flights

None
The fastest flight from San Diego to Ontario takes 3h 20m
There are no direct flights from San Diego to Ontario. There are no popular flight routes from San Diego to Ontario.
Search flight deals

Frequently asked questions about flying from San Diego to Ontario

  • How far is San Diego to Ontario by plane?

    The distance between San Diego and Ontario is about 97.3 mi. 3h 20m is a normal flight duration for this route.

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

    Prices for flights from San Diego Airport to Ontario Airport are refreshed on a daily basis.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Diego Airport to Ontario Airport.

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

    The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

Finding the right flight to Ontario from San Diego is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ontario quick and easy, saving you time and money.

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

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

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

Once you have performed a search for San Diego to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Ontario from San Diego are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Wed 6/17
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