Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San José to Los Angeles from $196

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 4/20. 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

Discover deals from 900+ travel sites with momondo.

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

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
7:55 am - 9:41 am
SJO
-
ONT
26h 46m
2 stops
United Airlines Logo
6:00 am - 7:15 am
ONT
-
SJO
24h 15m
1 stop
$354United Airlines
Sat, May 16 - Sun, May 24
United Airlines Logo
11:13 am - 9:50 pm
SJO
-
ONT
11h 37m
1 stop
United Airlines Logo
6:00 am - 7:15 am
ONT
-
SJO
24h 15m
1 stop
$375United Airlines
Wed, Apr 29 - Thu, May 7
United Airlines Logo
8:45 am - 10:59 pm
SJO
-
ONT
15h 14m
1 stop
United Airlines Logo
1:30 pm - 7:15 am
ONT
-
SJO
16h 45m
1 stop
$384United Airlines
Tue, May 5 - Sat, May 9
Multiple Airlines Logo
8:45 am - 10:59 pm
SJO
-
ONT
15h 14m
1 stop
Multiple Airlines Logo
5:45 am - 10:39 pm
ONT
-
SJO
15h 54m
1 stop
$386Multiple Airlines
Wed, May 20 - Sat, May 30
United Airlines Logo
1:25 pm - 9:41 am
SJO
-
ONT
21h 16m
2 stops
United Airlines Logo
6:59 pm - 12:21 pm
ONT
-
SJO
16h 22m
2 stops
$392United Airlines
Fri, May 1 - Mon, May 4
United Airlines Logo
8:45 am - 12:20 pm
SJO
-
ONT
28h 35m
1 stop
United Airlines Logo
1:30 pm - 7:15 am
ONT
-
SJO
16h 45m
1 stop
$396United Airlines
Tue, Apr 28 - Thu, Apr 30
United Airlines Logo
1:25 pm - 9:58 pm
SJO
-
ONT
9h 33m
1 stop
United Airlines Logo
6:59 pm - 7:15 am
ONT
-
SJO
11h 16m
1 stop
$401United Airlines
Fri, May 1 - Fri, May 15
Avianca Logo
5:05 am - 9:45 pm
SJO
-
ONT
17h 40m
1 stop
Avianca Logo
11:35 pm - 11:30 am
ONT
-
SJO
10h 55m
1 stop
$403Avianca
Thu, Apr 16 - Tue, Apr 21
United Airlines Logo
1:25 pm - 5:52 pm
SJO
-
ONT
29h 27m
3 stops
United Airlines Logo
6:59 pm - 7:15 am
ONT
-
SJO
11h 16m
1 stop
$405United Airlines
Fri, May 1 - Fri, May 15
Multiple Airlines Logo
7:55 am - 9:41 am
SJO
-
ONT
26h 46m
2 stops
Multiple Airlines Logo
1:30 pm - 7:15 am
ONT
-
SJO
16h 45m
1 stop
$406Multiple Airlines
Sat, May 9 - Thu, May 14

United Airlines flights from San José to Ontario

Our best United Airlines deals on San José to Ontario flight tickets
United Airlines
May 16
SJO7:55 amSan José Juan Santamaria Intl
26h 46m
2 stops
ONT9:41 amOntario
May 24
ONT6:00 amOntario
24h 15m
1 stop
SJO7:15 amSan José Juan Santamaria Intl
$354
United Airlines
Apr 29
SJO8:45 amSan José Juan Santamaria Intl
15h 00m
1 stop
ONT10:45 pmOntario
May 29
ONT5:45 amOntario
15h 54m
1 stop
SJO10:39 pmSan José Juan Santamaria Intl
$375
United Airlines
May 5
SJO8:45 amSan José Juan Santamaria Intl
15h 14m
1 stop
ONT10:59 pmOntario
May 9
ONT1:30 pmOntario
16h 45m
1 stop
SJO7:15 amSan José Juan Santamaria Intl
$384

Avianca flights from San José to Ontario

Our best Avianca deals on San José to Ontario flight tickets
Avianca
Apr 16
SJO5:05 amSan José Juan Santamaria Intl
17h 40m
1 stop
ONT9:45 pmOntario
Apr 21
ONT11:35 pmOntario
10h 55m
1 stop
SJO11:30 amSan José Juan Santamaria Intl
$403
Avianca
May 7
SJO3:10 pmSan José Juan Santamaria Intl
7h 35m
1 stop
ONT9:45 pmOntario
May 9
ONT11:35 pmOntario
10h 55m
1 stop
SJO11:30 amSan José Juan Santamaria Intl
$424
Avianca
Apr 20
SJO7:45 pmSan José Juan Santamaria Intl
27h 00m
1 stop
ONT9:45 pmOntario
Apr 25
ONT11:35 pmOntario
8h 10m
1 stop
SJO8:45 amSan José Juan Santamaria Intl
$432

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 March 14, 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

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 5/16

7:55 am-9:41 am

2 stops26h 46m

Ontario

Sun 5/24

6:00 am-7:15 am

1 stop24h 15m

$354

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Wed 4/29

11:13 am-9:50 pm

1 stop11h 37m

Ontario

Thu 5/7

6:00 am-7:15 am

1 stop24h 15m

$375

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Tue 5/5

8:45 am-10:59 pm

1 stop15h 14m

Ontario

Sat 5/9

1:30 pm-7:15 am

1 stop16h 45m

$384

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Wed 5/20

8:45 am-10:59 pm

1 stop15h 14m

Ontario

Sat 5/30

5:45 am-10:39 pm

1 stop15h 54m

$386

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Fri 5/1

1:25 pm-9:41 am

2 stops21h 16m

Ontario

Mon 5/4

6:59 pm-12:21 pm

2 stops16h 22m

$392

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Tue 4/28

8:45 am-12:20 pm

1 stop28h 35m

Ontario

Thu 4/30

1:30 pm-7:15 am

1 stop16h 45m

$396
Quickest round-trip

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Fri 5/1

1:25 pm-9:58 pm

1 stop9h 33m

Ontario

Fri 5/15

6:59 pm-7:15 am

1 stop11h 16m

$401

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Thu 4/16

5:05 am-9:45 pm

1 stop17h 40m

Ontario

Tue 4/21

11:35 pm-11:30 am

1 stop10h 55m

$403

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Fri 5/1

1:25 pm-5:52 pm

3 stops29h 27m

Ontario

Fri 5/15

6:59 pm-7:15 am

1 stop11h 16m

$405

San JoséOntario

SJO - ONT

SJOONT

San José Juan Santamaria Intl

Sat 5/9

7:55 am-9:41 am

2 stops26h 46m

Ontario

Thu 5/14

1:30 pm-7:15 am

1 stop16h 45m

$406

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 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 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 $317. If you aren’t able to travel during the month of January, then book flights to Ontario from San José during April instead. Flights to Ontario in April, while not as cheap as those in January, still average around $363.

How far in advance should I book a flight 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 $396 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 $330 on momondo.

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

You could potentially save up to 15% 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 March 2026, prices for San José to Ontario flights are approximately 44% cheaper 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

10h 26m

Direct flights

None
The fastest flight from San José to Ontario takes 10h 26m
There are no direct flights from San José to Ontario. There are no popular flight routes from San José to Ontario.
Search flight deals

  • 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 10h 26m, 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
9,424 reviews
Search United Airlines flights
AviancaPriceFrom $361Free CancellationRating
6.5
2,499 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.

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 4/13
Mon 4/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States