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Cheap flights from San José to Los Angeles from $248

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 José to Los Angeles departing on 9/5. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San José to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:45 am - 6:11 pm
SJO
-
ONT
10h 26m
1 stop
United Airlines Logo
7:13 pm - 7:15 am
ONT
-
SJO
11h 02m
1 stop
$443United Airlines
Sat, Sep 5 - Thu, Sep 17
United Airlines Logo
8:45 am - 10:58 pm
SJO
-
ONT
15h 13m
1 stop
United Airlines Logo
6:00 am - 7:15 am
ONT
-
SJO
24h 15m
1 stop
$449United Airlines
Thu, Sep 10 - Thu, Sep 17
United Airlines Logo
8:45 am - 10:37 pm
SJO
-
ONT
14h 52m
1 stop
United Airlines Logo
5:45 am - 10:39 pm
ONT
-
SJO
15h 54m
1 stop
$458United Airlines
Wed, May 27 - Sun, Jun 7
American Airlines Logo
12:57 pm - 11:48 am
SJO
-
ONT
23h 51m
1 stop
American Airlines Logo
11:59 pm - 1:58 pm
ONT
-
SJO
12h 59m
1 stop
$467American Airlines
Mon, Sep 28 - Tue, Oct 6
United Airlines Logo
8:45 am - 12:12 pm
SJO
-
ONT
28h 27m
1 stop
United Airlines Logo
6:00 am - 7:37 pm
ONT
-
SJO
12h 37m
1 stop
$470United Airlines
Sat, Sep 19 - Fri, Sep 25
American Airlines Logo
1:05 pm - 9:29 am
SJO
-
ONT
21h 24m
2 stops
American Airlines Logo
2:22 pm - 1:00 pm
ONT
-
SJO
21h 38m
2 stops
$472American Airlines
Mon, Sep 28 - Tue, Oct 6
United Airlines Logo
8:45 am - 10:37 pm
SJO
-
ONT
14h 52m
1 stop
United Airlines Logo
5:45 am - 10:39 pm
ONT
-
SJO
15h 54m
1 stop
$479United Airlines
Tue, Jun 2 - Sun, Jun 14
American Airlines Logo
11:41 pm - 11:59 pm
SJO
-
ONT
25h 18m
1 stop
American Airlines Logo
11:59 pm - 1:52 pm
ONT
-
SJO
12h 53m
1 stop
$485American Airlines
Wed, Jul 29 - Wed, Aug 5
American Airlines Logo
11:41 pm - 6:19 pm
SJO
-
ONT
19h 38m
2 stops
American Airlines Logo
11:59 pm - 1:52 pm
ONT
-
SJO
12h 53m
1 stop
$490American Airlines
Wed, Jul 29 - Wed, Aug 5
Multiple Airlines Logo
8:45 am - 6:11 pm
SJO
-
ONT
10h 26mnonstop
Multiple Airlines Logo
6:00 am - 7:37 pm
ONT
-
SJO
12h 37m
1 stop
$498Multiple Airlines
Sat, Sep 19 - Fri, Sep 25

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GOL flights from San José to Ontario

Our best GOL deals on San José to Ontario flight tickets
GOL
Sep 11
SJO12:57 pmSan José Juan Santamaria Intl
11h 09m
1 stop
ONT11:06 pmOntario
Sep 23
ONT11:59 pmOntario
12h 59m
1 stop
SJO1:58 pmSan José Juan Santamaria Intl
$592
GOL
Sep 11
SJO12:57 pmSan José Juan Santamaria Intl
11h 09m
1 stop
ONT11:06 pmOntario
Sep 16
ONT2:22 pmOntario
22h 36m
1 stop
SJO1:58 pmSan José Juan Santamaria Intl
$604
GOL
May 3
SJO2:08 pmSan José Juan Santamaria Intl
9h 28m
1 stop
ONT10:36 pmOntario
May 5
ONT11:59 pmOntario
12h 23m
1 stop
SJO1:22 pmSan José Juan Santamaria Intl
$694

American Airlines flights from San José to Ontario

Our best American Airlines deals on San José to Ontario flight tickets
American Airlines
Sep 28
SJO12:57 pmSan José Juan Santamaria Intl
23h 51m
1 stop
ONT11:48 amOntario
Oct 6
ONT11:59 pmOntario
12h 59m
1 stop
SJO1:58 pmSan José Juan Santamaria Intl
$467
American Airlines
Sep 28
SJO1:05 pmSan José Juan Santamaria Intl
21h 24m
2 stops
ONT9:29 amOntario
Oct 6
ONT2:22 pmOntario
21h 38m
2 stops
SJO1:00 pmSan José Juan Santamaria Intl
$472
American Airlines
Jul 29
SJO11:41 pmSan José Juan Santamaria Intl
25h 18m
1 stop
ONT11:59 pmOntario
Aug 5
ONT11:59 pmOntario
12h 53m
1 stop
SJO1:52 pmSan José Juan Santamaria Intl
$485

momondo Fare Finder

 
Customize your flight search to find flights from San José 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 2, 2026.
Use the filters below to find and compare flights from San José to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 9/5

8:45 am-6:11 pm

1 stop10h 26m

Ontario

Thu 9/17

7:13 pm-7:15 am

1 stop11h 02m

$443

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 9/10

8:45 am-10:58 pm

1 stop15h 13m

Ontario

Thu 9/17

6:00 am-7:15 am

1 stop24h 15m

$449

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Wed 5/27

8:45 am-10:37 pm

1 stop14h 52m

Ontario

Sun 6/7

5:45 am-10:39 pm

1 stop15h 54m

$458

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Mon 9/28

12:57 pm-11:48 am

1 stop23h 51m

Ontario

Tue 10/6

11:59 pm-1:58 pm

1 stop12h 59m

$467

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 9/19

8:45 am-12:12 pm

1 stop28h 27m

Ontario

Fri 9/25

6:00 am-7:37 pm

1 stop12h 37m

$470

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Mon 9/28

1:05 pm-9:29 am

2 stops21h 24m

Ontario

Tue 10/6

2:22 pm-1:00 pm

2 stops21h 38m

$472

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Tue 6/2

8:45 am-10:37 pm

1 stop14h 52m

Ontario

Sun 6/14

5:45 am-10:39 pm

1 stop15h 54m

$479

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Wed 7/29

11:41 pm-11:59 pm

1 stop25h 18m

Ontario

Wed 8/5

11:59 pm-1:52 pm

1 stop12h 53m

$485

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Wed 7/29

11:41 pm-6:19 pm

2 stops19h 38m

Ontario

Wed 8/5

11:59 pm-1:52 pm

1 stop12h 53m

$490

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 9/19

8:45 am-6:11 pm

Nonstop10h 26m

Ontario

Fri 9/25

6:00 am-7:37 pm

1 stop12h 37m

$498

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from San José 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 typical price of a round-trip flight between San José and Ontario?

What is the cheapest month to fly to Ontario?

In general, January is the cheapest month to fly from San José to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $322. If you aren’t able to travel during the month of January, then book flights to Ontario from San José during October instead. Flights to Ontario in October, while not as cheap as those in January, still average around $368.

How far in advance should I book a flight from San José to Ontario?

You are more likely to see cheaper flights to Ontario from San José when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $399 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from San José for as low as $331 on momondo.

Can stopping save me money on San José to Ontario flights?

You could potentially save up to 28% on your flight if you consider stops on a San José to Ontario flight.

How have San José to Ontario flight prices changed over time?

As of May 2026, prices for San José to Ontario flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from San José to Ontario

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

Cheap San José to Ontario (SJO to ONT) flight deals and tips

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

Fastest flight time

9h 01m

Direct flights

Mon, Fri and Sun

Airports in Ontario

1 airport
The fastest flight from San José to Ontario takes 9h 01m
Direct flights go from San José to Ontario on Monday, Friday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Ontario. From San José there are direct flights to Ontario (ONT).
Search flight deals

Frequently asked questions about flying from San José to Ontario

  • How far is San José Juan Santamaria Intl to Ontario by plane?

    A flight from San José Juan Santamaria Intl to Ontario will travel around 2696.0 mi. Flights usually cover this in 9h 01m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from San José Juan Santamaria Intl Airport to Ontario Airport?

    Prices for flights from San José Juan Santamaria Intl Airport to Ontario Airport refresh daily.

  • How many operators does momondo search for flights from San José Juan Santamaria Intl Airport to Ontario Airport?

  • How old do you have to be to fly from San José Juan Santamaria Intl 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 José Juan Santamaria Intl Airport to Ontario Airport.

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

    The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from San José to Ontario?

Best airlines flying from San José to Ontario

Compare and see reviews for airlines that fly from San José to Ontario with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $267Free CancellationRating
7.4
9,680 reviews
Search United Airlines flights
AviancaPriceFrom $361Free CancellationRating
6.5
2,519 reviews
Search Avianca flights

Why use momondo?

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

It is quick and easy to find San José to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

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

Yes. All flights to Ontario from San José on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San José to Ontario.

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

Price alerts on flights to Ontario from San José 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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