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Cheap flights from San Juan Luis Munoz Marin Intl Airport to Los Angeles from $142

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 Juan Luis Munoz Marin Intl Airport to Los Angeles departing on 1/23. 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 Juan Luis Munoz Marin Intl Airport to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:07 am - 10:48 pm
SJU
-
ONT
19h 41m1 stop
American Airlines Logo
12:57 pm - 10:48 am
ONT
-
SJU
17h 51m2 stops
$283American Airlines
Tue, Jan 13 - Sat, Jan 17
American Airlines Logo
6:00 am - 2:18 pm
SJU
-
ONT
12h 18m2 stops
American Airlines Logo
6:00 am - 10:26 pm
ONT
-
SJU
12h 26m1 stop
$308American Airlines
Wed, Jan 14 - Sun, Jan 18
American Airlines Logo
7:07 am - 10:48 pm
SJU
-
ONT
19h 41m1 stop
American Airlines Logo
6:00 am - 10:26 pm
ONT
-
SJU
12h 26m1 stop
$371American Airlines
Tue, Jan 13 - Sat, Jan 17
United Airlines Logo
7:45 am - 8:58 pm
SJU
-
ONT
17h 13m2 stops
United Airlines Logo
1:53 pm - 6:11 am
ONT
-
SJU
12h 18m2 stops
$373United Airlines
Wed, Jan 14 - Sun, Jan 18
JetBlue Logo
1:50 pm - 10:09 pm
SJU
-
ONT
11h 19m1 stop
JetBlue Logo
11:25 pm - 12:49 pm
ONT
-
SJU
10h 24m1 stop
$398JetBlue
Tue, May 19 - Wed, Jun 3
JetBlue Logo
1:50 pm - 10:09 pm
SJU
-
ONT
11h 19m1 stop
JetBlue Logo
11:25 pm - 12:49 pm
ONT
-
SJU
10h 24m1 stop
$400JetBlue
Sat, May 16 - Mon, May 25
JetBlue Logo
1:50 pm - 10:09 pm
SJU
-
ONT
11h 19m1 stop
JetBlue Logo
11:25 pm - 12:49 pm
ONT
-
SJU
10h 24m1 stop
$433JetBlue
Tue, May 19 - Wed, Jun 3
American Airlines Logo
1:30 am - 11:28 am
SJU
-
ONT
12h 58m2 stops
American Airlines Logo
7:59 pm - 9:00 am
ONT
-
SJU
10h 01m2 stops
$459American Airlines
Wed, Mar 18 - Thu, Mar 26
JetBlue Logo
1:50 pm - 10:09 pm
SJU
-
ONT
11h 19m1 stop
JetBlue Logo
11:25 pm - 12:49 pm
ONT
-
SJU
10h 24m1 stop
$465JetBlue
Tue, May 19 - Wed, Jun 3
United Airlines Logo
3:46 pm - 9:58 pm
SJU
-
ONT
10h 12m1 stop
United Airlines Logo
1:53 pm - 6:11 am
ONT
-
SJU
12h 18m2 stops
$484United Airlines
Fri, Jan 16 - Sun, Jan 18

United Airlines flights from San Juan Luis Munoz Marin Intl Airport to Ontario

Our best United Airlines deals on San Juan Luis Munoz Marin Intl Airport to Ontario flight tickets
United Airlines
Jan 14
SJU7:45 amSan Juan Luis Munoz Marin Intl
17h 13m
2 stops
ONT8:58 pmOntario
Jan 18
ONT1:53 pmOntario
12h 18m
2 stops
SJU6:11 amSan Juan Luis Munoz Marin Intl
$373
Find similar
United Airlines
Jan 16
SJU3:46 pmSan Juan Luis Munoz Marin Intl
10h 12m
1 stop
ONT9:58 pmOntario
Jan 18
ONT5:05 amOntario
9h 20m
1 stop
SJU6:25 pmSan Juan Luis Munoz Marin Intl
$484
Find similar
United Airlines
Feb 4
SJU5:50 pmSan Juan Luis Munoz Marin Intl
31h 08m
2 stops
ONT8:58 pmOntario
Feb 7
ONT1:24 pmOntario
12h 47m
2 stops
SJU6:11 amSan Juan Luis Munoz Marin Intl
$523
Find similar

Alaska Airlines flights from San Juan Luis Munoz Marin Intl Airport to Ontario

Our best Alaska Airlines deals on San Juan Luis Munoz Marin Intl Airport to Ontario flight tickets
Alaska Airlines
Jan 30
SJU7:07 amSan Juan Luis Munoz Marin Intl
41h 29m
2 stops
ONT8:36 pmOntario
Feb 9
ONT6:00 amOntario
29h 00m
2 stops
SJU3:00 pmSan Juan Luis Munoz Marin Intl
$715
Find similar
Alaska Airlines
Apr 15
SJU11:59 pmSan Juan Luis Munoz Marin Intl
20h 46m
2 stops
ONT5:45 pmOntario
Apr 19
ONT6:00 amOntario
28h 40m
2 stops
SJU1:40 pmSan Juan Luis Munoz Marin Intl
$974
Find similar
Alaska Airlines
Jan 16
SJU4:28 pmSan Juan Luis Munoz Marin Intl
32h 08m
2 stops
ONT8:36 pmOntario
Jan 18
ONT7:56 pmOntario
22h 30m
2 stops
SJU10:26 pmSan Juan Luis Munoz Marin Intl
$985
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Juan Luis Munoz Marin Intl Airport 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 December 23, 2025.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Tue 1/13

7:07 am-10:48 pm

1 stop19h 41m

Ontario

Sat 1/17

12:57 pm-10:48 am

2 stops17h 51m

$283

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 1/14

6:00 am-2:18 pm

2 stops12h 18m

Ontario

Sun 1/18

6:00 am-10:26 pm

1 stop12h 26m

$308

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Tue 1/13

7:07 am-10:48 pm

1 stop19h 41m

Ontario

Sat 1/17

6:00 am-10:26 pm

1 stop12h 26m

$371

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 1/14

7:45 am-8:58 pm

2 stops17h 13m

Ontario

Sun 1/18

1:53 pm-6:11 am

2 stops12h 18m

$373

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Tue 5/19

1:50 pm-10:09 pm

1 stop11h 19m

Ontario

Wed 6/3

11:25 pm-12:49 pm

1 stop10h 24m

$398

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Sat 5/16

1:50 pm-10:09 pm

1 stop11h 19m

Ontario

Mon 5/25

11:25 pm-12:49 pm

1 stop10h 24m

$400

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Tue 5/19

1:50 pm-10:09 pm

1 stop11h 19m

Ontario

Wed 6/3

11:25 pm-12:49 pm

1 stop10h 24m

$433

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 3/18

1:30 am-11:28 am

2 stops12h 58m

Ontario

Thu 3/26

7:59 pm-9:00 am

2 stops10h 01m

$459

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Tue 5/19

1:50 pm-10:09 pm

1 stop11h 19m

Ontario

Wed 6/3

11:25 pm-12:49 pm

1 stop10h 24m

$465

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Fri 1/16

3:46 pm-9:58 pm

1 stop10h 12m

Ontario

Sun 1/18

1:53 pm-6:11 am

2 stops12h 18m

$484

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 Juan Luis Munoz Marin Intl Airport 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 Juan Luis Munoz Marin Intl Airport and Ontario?

What is the cheapest month to fly to Ontario?

In general, July is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $333. If you aren’t able to travel during the month of July, then book flights to Ontario from San Juan Luis Munoz Marin Intl Airport during March instead. Flights to Ontario in March, while not as cheap as those in July, still average around $358.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $364. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from San Juan Luis Munoz Marin Intl Airport to Ontario for around $734.

What is the cheapest time of day to depart on your flight to Ontario?

In the morning is the cheapest time of day to fly from San Juan Luis Munoz Marin Intl Airport to Ontario when you can find flight prices for as low as $363. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $665 on average. Flights to Ontario from San Juan Luis Munoz Marin Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on San Juan Luis Munoz Marin Intl Airport to Ontario flights?

You could potentially save up to 20% on your flight if you consider stops on a San Juan Luis Munoz Marin Intl Airport to Ontario flight.

How have San Juan Luis Munoz Marin Intl Airport to Ontario flight prices changed over time?

As of December 2025, prices for San Juan Luis Munoz Marin Intl Airport to Ontario flights are approximately 18% more expensive when compared to flights at the same time last year.

When to book flights from San Juan Luis Munoz Marin Intl Airport to Ontario

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

Cheap San Juan Luis Munoz Marin Intl Airport to Ontario (SJU to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Juan Luis Munoz Marin Intl Airport to Ontario

Fastest flight time

9h 55m

Direct flights

None
The fastest flight from San Juan Luis Munoz Marin Intl Airport to Ontario takes 9h 55m
There are no direct flights from San Juan Luis Munoz Marin Intl Airport to Ontario. There are no popular flight routes from San Juan Luis Munoz Marin Intl Airport to Ontario.
Search flight deals

  • How far is San Juan Luis Munoz Marin Intl to Ontario by plane?

    A flight from San Juan Luis Munoz Marin Intl to Ontario will travel around 3337.2 mi. By plane, this route typically takes 9h 55m.

  • When did momondo last update prices for flights from San Juan Luis Munoz Marin Intl Airport to Ontario Airport?

    Prices for flights from San Juan Luis Munoz Marin Intl Airport to Ontario Airport were last updated today.

  • How many operators does momondo search for flights from San Juan Luis Munoz Marin Intl Airport to Ontario Airport?

  • How old do you have to be to fly from San Juan Luis Munoz Marin Intl Airport to Ontario Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Juan Luis Munoz Marin Intl Airport to Ontario Airport.

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

    The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from San Juan Luis Munoz Marin Intl Airport to Ontario?

Best airlines flying from San Juan Luis Munoz Marin Intl Airport to Ontario

Compare and see reviews for airlines that fly from San Juan Luis Munoz Marin Intl Airport to Ontario with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $355Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
United AirlinesPriceFrom $367Free CancellationRating
7.4
9,105 reviews
Search United Airlines flights

Why use momondo?

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

Finding the right flight to Ontario from San Juan 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 Juan to Ontario with flexible booking policies on momondo?

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

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

momondo provides multiple filters to help you find the best flight to Ontario from San Juan. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Ontario from San Juan 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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