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Cheap flights from San José to Los Angeles from $256

1 adult
1 adult, Economy, 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.
Multiple Airlines Logo
3:00 pm - 10:15 pmSJO  San José Juan Santamaria Intl-ONT Ontario
9h 15m1 stop Guadalajara Miguel Hidal
Multiple Airlines Logo
12:05 am - 10:44 pmONT  Ontario-SJO San José Juan Santamaria Intl
20h 39m1 stop Guadalajara Miguel Hidal
$444Multiple Airlines
Sat, Dec 12 - Fri, Feb 19
Multiple Airlines Logo
3:00 pm - 10:15 pmSJO  San José Juan Santamaria Intl-ONT Ontario
9h 15m1 stop Guadalajara Miguel Hidal
Multiple Airlines Logo
12:05 am - 10:44 pmONT  Ontario-SJO San José Juan Santamaria Intl
20h 39m1 stop Guadalajara Miguel Hidal
$490Multiple Airlines
Sat, Feb 27 - Wed, Mar 3
Frontier Logo
12:20 pm - 12:13 amSJO  San José Juan Santamaria Intl-ONT Ontario
13h 53m2 stops Dallas/Fort Worth Denver Intl
Frontier Logo
7:10 pm - 11:05 amONT  Ontario-SJO San José Juan Santamaria Intl
13h 55m1 stop Dallas/Fort Worth
$532Frontier
Sat, Dec 19 - Thu, Dec 31
Frontier Logo
12:20 pm - 8:01 amSJO  San José Juan Santamaria Intl-ONT Ontario
21h 41m2 stops Dallas/Fort Worth Las Vegas Harry Reid Intl
Frontier Logo
7:10 pm - 11:05 amONT  Ontario-SJO San José Juan Santamaria Intl
13h 55m1 stop Dallas/Fort Worth
$543Frontier
Mon, Dec 21 - Thu, Dec 31
Avianca Logo
3:10 pm - 8:50 pmSJO  San José Juan Santamaria Intl-ONT Ontario
7h 40m1 stop San Salvador El Salvador Intl
Avianca Logo
10:45 pm - 8:50 amONT  Ontario-SJO San José Juan Santamaria Intl
8h 05m1 stop San Salvador El Salvador Intl
$552Avianca
Sat, Dec 5 - Sat, Feb 27
Avianca Logo
3:10 pm - 8:50 pmSJO  San José Juan Santamaria Intl-ONT Ontario
7h 40m1 stop San Salvador El Salvador Intl
Avianca Logo
11:35 pm - 8:45 amONT  Ontario-SJO San José Juan Santamaria Intl
8h 10m1 stop San Salvador El Salvador Intl
$552Avianca
Thu, Nov 26 - Tue, Apr 6
Avianca Logo
3:10 pm - 8:50 pmSJO  San José Juan Santamaria Intl-ONT Ontario
7h 40m1 stop San Salvador El Salvador Intl
Avianca Logo
11:35 pm - 8:45 amONT  Ontario-SJO San José Juan Santamaria Intl
8h 10m1 stop San Salvador El Salvador Intl
$552Avianca
Thu, Nov 26 - Sat, May 8
United Airlines Logo
1:15 am - 10:11 pmSJO  San José Juan Santamaria Intl-ONT Ontario
22h 56m1 stop Houston George Bush Intcntl
United Airlines Logo
6:00 am - 6:16 pmONT  Ontario-SJO San José Juan Santamaria Intl
10h 16m1 stop Houston George Bush Intcntl
$576United Airlines
Thu, Dec 17 - Mon, Jan 18
United Airlines Logo
8:45 am - 10:11 pmSJO  San José Juan Santamaria Intl-ONT Ontario
15h 26m1 stop Houston George Bush Intcntl
United Airlines Logo
3:59 pm - 1:22 pmONT  Ontario-SJO San José Juan Santamaria Intl
19h 23m2 stops San Francisco Houston George Bush Intcntl
$576United Airlines
Wed, Dec 23 - Mon, Jan 11
United Airlines Logo
12:35 pm - 10:22 amSJO  San José Juan Santamaria Intl-ONT Ontario
23h 47m2 stops Houston George Bush Intcntl San Francisco
United Airlines Logo
6:00 am - 8:39 pmONT  Ontario-SJO San José Juan Santamaria Intl
12h 39m1 stop Houston George Bush Intcntl
$576United Airlines
Thu, Feb 18 - Wed, Mar 10

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United Airlines flights from San José to Ontario

Our best United Airlines deals on San José to Ontario flight tickets
United Airlines
Feb 4
SJO9:40 amSan José Juan Santamaria Intl
26h 17m
1 stop
ONT9:57 amOntario
Feb 15
ONT4:02 pmOntario
14h 30m
1 stop
SJO8:32 amSan José Juan Santamaria Intl
$576
United Airlines
Jan 14
SJO9:40 amSan José Juan Santamaria Intl
9h 55m
1 stop
ONT5:35 pmOntario
Jan 30
ONT5:00 amOntario
13h 39m
2 stops
SJO8:39 pmSan José Juan Santamaria Intl
$586
United Airlines
Dec 22
SJO8:45 amSan José Juan Santamaria Intl
15h 26m
1 stop
ONT10:11 pmOntario
Jan 5
ONT2:00 pmOntario
21h 22m
2 stops
SJO1:22 pmSan José Juan Santamaria Intl
$589

Avianca flights from San José to Ontario

Our best Avianca deals on San José to Ontario flight tickets
Avianca
Nov 26
SJO3:10 pmSan José Juan Santamaria Intl
7h 40m
1 stop
ONT8:50 pmOntario
Apr 6
ONT11:35 pmOntario
8h 10m
1 stop
SJO8:45 amSan José Juan Santamaria Intl
$552
Avianca
Mar 6
SJO9:45 amSan José Juan Santamaria Intl
13h 05m
1 stop
ONT8:50 pmOntario
Mar 27
ONT11:45 pmOntario
10h 45m
1 stop
SJO11:30 amSan José Juan Santamaria Intl
$566
Avianca
Jan 19
SJO3:10 pmSan José Juan Santamaria Intl
7h 40m
1 stop
ONT8:50 pmOntario
Jan 26
ONT10:45 pmOntario
8h 05m
1 stop
SJO8:50 amSan José Juan Santamaria Intl
$573

momondo Fare Finder

 
Use the filters below to find and compare flights from San José to Ontario that are best for you.

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Route

Depart

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Price

Cheapest round-trip

San JoséOntario

SJO San José Juan Santamaria Intl - ONT Ontario

SJOONT

San José Juan Santamaria Intl

Sat 12/12

3:00 pm-10:15 pm

1 stop9h 15m

Ontario

Fri 2/19

12:05 am-10:44 pm

1 stop20h 39m

$444

San JoséOntario

SJO San José Juan Santamaria Intl - ONT Ontario

SJOONT

San José Juan Santamaria Intl

Sat 2/27

3:00 pm-10:15 pm

1 stop9h 15m

Ontario

Wed 3/3

12:05 am-10:44 pm

1 stop20h 39m

$490

San JoséOntario

SJO San José Juan Santamaria Intl - ONT Ontario

SJOONT

San José Juan Santamaria Intl

Sat 12/19

12:20 pm-12:13 am

2 stops13h 53m

Ontario

Thu 12/31

7:10 pm-11:05 am

1 stop13h 55m

$532

San JoséOntario

SJO San José Juan Santamaria Intl - ONT Ontario

SJOONT

San José Juan Santamaria Intl

Mon 12/21

12:20 pm-8:01 am

2 stops21h 41m

Ontario

Thu 12/31

7:10 pm-11:05 am

1 stop13h 55m

$543
Quickest round-trip

San JoséOntario

SJO San José Juan Santamaria Intl - ONT Ontario

SJOONT

San José Juan Santamaria Intl

Sat 12/5

3:10 pm-8:50 pm

1 stop7h 40m

Ontario

Sat 2/27

10:45 pm-8:50 am

1 stop8h 05m

$552

San JoséOntario

SJO San José Juan Santamaria Intl - ONT Ontario

SJOONT

San José Juan Santamaria Intl

Thu 11/26

3:10 pm-8:50 pm

1 stop7h 40m

Ontario

Tue 4/6

11:35 pm-8:45 am

1 stop8h 10m

$552

San JoséOntario

SJO San José Juan Santamaria Intl - ONT Ontario

SJOONT

San José Juan Santamaria Intl

Thu 11/26

3:10 pm-8:50 pm

1 stop7h 40m

Ontario

Sat 5/8

11:35 pm-8:45 am

1 stop8h 10m

$552

San JoséOntario

SJO San José Juan Santamaria Intl - ONT Ontario

SJOONT

San José Juan Santamaria Intl

Thu 12/17

1:15 am-10:11 pm

1 stop22h 56m

Ontario

Mon 1/18

6:00 am-6:16 pm

1 stop10h 16m

$576

San JoséOntario

SJO San José Juan Santamaria Intl - ONT Ontario

SJOONT

San José Juan Santamaria Intl

Wed 12/23

8:45 am-10:11 pm

1 stop15h 26m

Ontario

Mon 1/11

3:59 pm-1:22 pm

2 stops19h 23m

$576

San JoséOntario

SJO San José Juan Santamaria Intl - ONT Ontario

SJOONT

San José Juan Santamaria Intl

Thu 2/18

12:35 pm-10:22 am

2 stops23h 47m

Ontario

Wed 3/10

6:00 am-8:39 pm

1 stop12h 39m

$576

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?

Prices are currently typical for flights on this route.

Typical prices usually range from $393 to $563.
The lowest price recently found on this route was $444.

What is the cheapest month to fly to Ontario?

In general, May 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 $383. If you aren’t able to travel during the month of May, then book flights to Ontario from San José during February instead. Flights to Ontario in February, while not as cheap as those in May, still average around $393.

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 $578 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 $405 on momondo.

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

You could potentially save up to 39% 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 October 2026, prices for San José to Ontario flights are approximately 12% 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

Best Price Found

$256

Fastest flight time

9h 15m

Direct flights

None
The best one-way flight to Ontario from San José in the past 72 hours is $256. The best round-trip flight deal from San José to Ontario found on momondo in the last 72 hours is $444.
The fastest flight from San José to Ontario takes 9h 15m
There are no direct flights from San José to Ontario. There are no popular flight routes from San José to Ontario.
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 15m, 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
7.3
10,451 reviews
Search United Airlines flights
AviancaPriceFrom $387Free CancellationRating
6.5
2,549 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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