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Cheap flights from San Juan Luis Munoz Marin Intl Airport to Los Angeles from $147

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 12/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Frontier Logo
7:06 pm - 8:53 amSJU-ONT
17h 47m1 stop
Frontier Logo
6:00 pm - 1:42 amONT-SJU
27h 42m2 stops
$261Frontier
Find Deal
Wed, Dec 24 - Mon, Jan 5
Frontier Logo
3:54 am - 3:46 pmSJU-ONT
15h 52m2 stops
Frontier Logo
4:16 pm - 6:34 amONT-SJU
10h 18m1 stop
$352Frontier
Find Deal
Mon, Dec 22 - Thu, Jan 1
American Airlines Logo
7:07 am - 6:20 pmSJU-ONT
15h 13m2 stops
American Airlines Logo
7:16 am - 11:59 pmONT-SJU
12h 43m2 stops
$355American Airlines
Find Deal
Wed, Jan 21 - Sat, Jan 24
Multiple Airlines Logo
7:06 pm - 8:53 amSJU-ONT
17h 47m1 stop
Multiple Airlines Logo
8:14 am - 12:33 amONT-SJU
12h 19m1 stop
$368Multiple Airlines
Find Deal
Wed, Dec 24 - Mon, Jan 5
Multiple Airlines Logo
7:50 pm - 9:17 pmSJU-ONT
29h 27m2 stops
Multiple Airlines Logo
6:56 pm - 12:27 pmONT-SJU
13h 31m1 stop
$378Multiple Airlines
Find Deal
Wed, Jan 21 - Sun, Jan 25
American Airlines Logo
5:24 am - 8:58 pmSJU-ONT
19h 34m2 stops
American Airlines Logo
4:47 pm - 10:48 amONT-SJU
14h 01m2 stops
$414American Airlines
Find Deal
Wed, Dec 24 - Mon, Jan 5
Southwest Logo
6:15 am - 6:35 pmSJU-ONT
16h 20m1 stop
Southwest Logo
10:15 am - 12:30 amONT-SJU
10h 15m2 stops
$428Southwest
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Sat, Dec 6 - Sat, Dec 13
United Airlines Logo
3:46 pm - 9:49 pmSJU-ONT
10h 03m1 stop
United Airlines Logo
6:00 am - 9:26 pmONT-SJU
11h 26m1 stop
$445United Airlines
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Wed, Dec 3 - Wed, Dec 10
Southwest Logo
6:15 am - 6:35 pmSJU-ONT
16h 20m1 stop
Southwest Logo
6:00 am - 11:15 pmONT-SJU
13h 15m1 stop
$470Southwest
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Sat, Dec 6 - Sat, Dec 13
United Airlines Logo
3:46 pm - 9:49 pmSJU-ONT
10h 03m1 stop
United Airlines Logo
5:05 am - 10:22 pmONT-SJU
13h 17m2 stops
$480United Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10

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

Our best American Airlines deals on San Juan Luis Munoz Marin Intl Airport to Ontario flight tickets
American Airlines
Jan 21
SJU7:07 amSan Juan Luis Munoz Marin Intl
15h 13m
2 stops
ONT6:20 pmOntario
Jan 24
ONT7:16 amOntario
12h 43m
2 stops
SJU11:59 pmSan Juan Luis Munoz Marin Intl
$355
Find similar
American Airlines
Dec 24
SJU5:24 amSan Juan Luis Munoz Marin Intl
19h 34m
2 stops
ONT8:58 pmOntario
Jan 5
ONT4:47 pmOntario
14h 01m
2 stops
SJU10:48 amSan Juan Luis Munoz Marin Intl
$414
Find similar
American Airlines
Jan 21
SJU7:07 amSan Juan Luis Munoz Marin Intl
15h 38m
1 stop
ONT6:45 pmOntario
Jan 24
ONT6:00 amOntario
12h 26m
1 stop
SJU10:26 pmSan Juan Luis Munoz Marin Intl
$439
Find similar

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
Dec 3
SJU3:46 pmSan Juan Luis Munoz Marin Intl
10h 03m
1 stop
ONT9:49 pmOntario
Dec 10
ONT6:00 amOntario
11h 26m
1 stop
SJU9:26 pmSan Juan Luis Munoz Marin Intl
$445
Find similar
United Airlines
Dec 3
SJU3:46 pmSan Juan Luis Munoz Marin Intl
10h 03m
1 stop
ONT9:49 pmOntario
Dec 10
ONT5:05 amOntario
13h 17m
2 stops
SJU10:22 pmSan Juan Luis Munoz Marin Intl
$480
Find similar
United Airlines
Dec 3
SJU3:46 pmSan Juan Luis Munoz Marin Intl
10h 03m
1 stop
ONT9:49 pmOntario
Dec 9
ONT6:00 amOntario
11h 26m
1 stop
SJU9:26 pmSan Juan Luis Munoz Marin Intl
$515
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 November 6, 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

Wed 12/24

7:06 pm-8:53 am

1 stop17h 47m

Ontario

Mon 1/5

6:00 pm-1:42 am

2 stops27h 42m

$261

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Mon 12/22

3:54 am-3:46 pm

2 stops15h 52m

Ontario

Thu 1/1

4:16 pm-6:34 am

1 stop10h 18m

$352

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 1/21

7:07 am-6:20 pm

2 stops15h 13m

Ontario

Sat 1/24

7:16 am-11:59 pm

2 stops12h 43m

$355

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 12/24

7:06 pm-8:53 am

1 stop17h 47m

Ontario

Mon 1/5

8:14 am-12:33 am

1 stop12h 19m

$368

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 1/21

7:50 pm-9:17 pm

2 stops29h 27m

Ontario

Sun 1/25

6:56 pm-12:27 pm

1 stop13h 31m

$378

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 12/24

5:24 am-8:58 pm

2 stops19h 34m

Ontario

Mon 1/5

4:47 pm-10:48 am

2 stops14h 01m

$414

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Sat 12/6

6:15 am-6:35 pm

1 stop16h 20m

Ontario

Sat 12/13

10:15 am-12:30 am

2 stops10h 15m

$428

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 12/3

3:46 pm-9:49 pm

1 stop10h 03m

Ontario

Wed 12/10

6:00 am-9:26 pm

1 stop11h 26m

$445

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Sat 12/6

6:15 am-6:35 pm

1 stop16h 20m

Ontario

Sat 12/13

6:00 am-11:15 pm

1 stop13h 15m

$470

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Wed 12/3

3:46 pm-9:49 pm

1 stop10h 03m

Ontario

Wed 12/10

5:05 am-10:22 pm

2 stops13h 17m

$480

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 $351.

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.

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

As of November 2025, prices for San Juan Luis Munoz Marin Intl Airport to Ontario flights are approximately 15% 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

Direct flights

None
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.
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  • 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 10h 03m.

  • 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
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $433Free CancellationRating
7.4
9,007 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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