Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from San Diego to Los Angeles from $70

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 8/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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
10:00 am - 2:03 pm
SAN
-
ONT
28h 03m
1 stop
Frontier Logo
8:48 am - 2:50 pm
ONT
-
SAN
6h 02m
1 stop
$133Frontier
Tue, Aug 18 - Mon, Aug 31
Frontier Logo
10:00 am - 2:03 pm
SAN
-
ONT
28h 03m
1 stop
Frontier Logo
3:40 pm - 8:14 pm
ONT
-
SAN
4h 34m
1 stop
$164Frontier
Tue, Aug 18 - Mon, Aug 31
Frontier Logo
10:00 am - 2:03 pm
SAN
-
ONT
28h 03m
1 stop
Frontier Logo
10:17 pm - 2:50 pm
ONT
-
SAN
16h 33m
2 stops
$183Frontier
Tue, Aug 18 - Mon, Aug 31
Frontier Logo
10:00 am - 2:03 pm
SAN
-
ONT
28h 03m
1 stop
Frontier Logo
10:17 pm - 2:50 pm
ONT
-
SAN
16h 33m
2 stops
$184Frontier
Tue, Aug 18 - Mon, Aug 31
Frontier Logo
10:00 am - 2:03 pm
SAN
-
ONT
28h 03m
1 stop
Frontier Logo
10:17 pm - 2:50 pm
ONT
-
SAN
16h 33m
2 stops
$188Frontier
Tue, Aug 18 - Mon, Aug 31
Frontier Logo
8:51 pm - 8:03 am
SAN
-
ONT
11h 12m
1 stop
Frontier Logo
8:58 am - 11:59 pm
ONT
-
SAN
15h 01m
1 stop
$195Frontier
Thu, Aug 6 - Thu, Aug 13
Frontier Logo
8:51 pm - 8:03 am
SAN
-
ONT
11h 12m
1 stop
Frontier Logo
8:58 am - 11:59 pm
ONT
-
SAN
15h 01m
1 stop
$200Frontier
Sat, Aug 8 - Sat, Aug 15
Frontier Logo
4:36 pm - 2:00 pm
SAN
-
ONT
21h 24m
1 stop
Frontier Logo
2:58 pm - 9:20 am
ONT
-
SAN
18h 22m
1 stop
$211Frontier
Wed, Oct 7 - Sat, Oct 10
Frontier Logo
8:51 pm - 8:03 am
SAN
-
ONT
11h 12m
1 stop
Frontier Logo
11:47 am - 11:59 pm
ONT
-
SAN
12h 12m
2 stops
$246Frontier
Thu, Aug 6 - Thu, Aug 13
Frontier Logo
8:51 pm - 8:03 am
SAN
-
ONT
11h 12m
1 stop
Frontier Logo
11:47 am - 11:59 pm
ONT
-
SAN
12h 12m
2 stops
$251Frontier
Sat, Aug 8 - Sat, Aug 15

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Southwest flights from San Diego to Ontario

Our best Southwest deals on San Diego to Ontario flight tickets
Southwest
Oct 5
SAN6:45 pmSan Diego
3h 30m
1 stop
ONT10:15 pmOntario
Oct 10
ONT2:20 pmOntario
6h 05m
1 stop
SAN8:25 pmSan Diego
$291
Southwest
Oct 5
SAN7:30 amSan Diego
4h 30m
1 stop
ONT12:00 pmOntario
Oct 10
ONT7:20 amOntario
4h 55m
2 stops
SAN12:15 pmSan Diego
$296
Southwest
Aug 8
SAN9:10 amSan Diego
8h 10m
2 stops
ONT5:20 pmOntario
Aug 15
ONT6:00 amOntario
6h 40m
2 stops
SAN12:40 pmSan Diego
$392

Alaska Airlines flights from San Diego to Ontario

Our best Alaska Airlines deals on San Diego to Ontario flight tickets
Alaska Airlines
Aug 29
SAN7:57 amSan Diego
7h 55m
1 stop
ONT3:52 pmOntario
Aug 30
ONT4:27 pmOntario
15h 38m
1 stop
SAN8:05 amSan Diego
$263
Alaska Airlines
Sep 3
SAN7:57 amSan Diego
7h 50m
1 stop
ONT3:47 pmOntario
Sep 13
ONT4:27 pmOntario
15h 38m
1 stop
SAN8:05 amSan Diego
$301
Alaska Airlines
Sep 23
SAN9:59 pmSan Diego
17h 48m
1 stop
ONT3:47 pmOntario
Sep 26
ONT12:12 pmOntario
11h 32m
1 stop
SAN11:44 pmSan Diego
$313

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 July 11, 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

San DiegoOntario

SAN - ONT

SANONT

San Diego

Tue 8/18

10:00 am-2:03 pm

1 stop28h 03m

Ontario

Mon 8/31

8:48 am-2:50 pm

1 stop6h 02m

$133

San DiegoOntario

SAN - ONT

SANONT

San Diego

Tue 8/18

10:00 am-2:03 pm

1 stop28h 03m

Ontario

Mon 8/31

3:40 pm-8:14 pm

1 stop4h 34m

$164

San DiegoOntario

SAN - ONT

SANONT

San Diego

Tue 8/18

10:00 am-2:03 pm

1 stop28h 03m

Ontario

Mon 8/31

10:17 pm-2:50 pm

2 stops16h 33m

$183

San DiegoOntario

SAN - ONT

SANONT

San Diego

Tue 8/18

10:00 am-2:03 pm

1 stop28h 03m

Ontario

Mon 8/31

10:17 pm-2:50 pm

2 stops16h 33m

$184

San DiegoOntario

SAN - ONT

SANONT

San Diego

Tue 8/18

10:00 am-2:03 pm

1 stop28h 03m

Ontario

Mon 8/31

10:17 pm-2:50 pm

2 stops16h 33m

$188

San DiegoOntario

SAN - ONT

SANONT

San Diego

Thu 8/6

8:51 pm-8:03 am

1 stop11h 12m

Ontario

Thu 8/13

8:58 am-11:59 pm

1 stop15h 01m

$195

San DiegoOntario

SAN - ONT

SANONT

San Diego

Sat 8/8

8:51 pm-8:03 am

1 stop11h 12m

Ontario

Sat 8/15

8:58 am-11:59 pm

1 stop15h 01m

$200

San DiegoOntario

SAN - ONT

SANONT

San Diego

Wed 10/7

4:36 pm-2:00 pm

1 stop21h 24m

Ontario

Sat 10/10

2:58 pm-9:20 am

1 stop18h 22m

$211
Quickest round-trip

San DiegoOntario

SAN - ONT

SANONT

San Diego

Thu 8/6

8:51 pm-8:03 am

1 stop11h 12m

Ontario

Thu 8/13

11:47 am-11:59 pm

2 stops12h 12m

$246

San DiegoOntario

SAN - ONT

SANONT

San Diego

Sat 8/8

8:51 pm-8:03 am

1 stop11h 12m

Ontario

Sat 8/15

11:47 am-11:59 pm

2 stops12h 12m

$251

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

Frontier and Alaska Airlines are the most popular carriers operating from San Diego to Ontario

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 45m

Direct flights

None
The fastest flight from San Diego to Ontario takes 3h 45m
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 45m 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.

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 8/10
Mon 8/17
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States