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Cheap flights from San Juan Luis Munoz Marin Intl Airport to Los Angeles from $109

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 2/2. 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.
Multiple Airlines Logo
6:17 pm - 8:42 pmSJU-ONT
30h 25m2 stops
Multiple Airlines Logo
11:59 am - 7:39 pmONT-SJU
27h 40m1 stop
$306Multiple Airlines
Find Deal
Mon, Nov 3 - Thu, Nov 13
Multiple Airlines Logo
9:00 am - 8:42 pmSJU-ONT
39h 42m2 stops
Multiple Airlines Logo
11:59 am - 7:39 pmONT-SJU
27h 40m1 stop
$328Multiple Airlines
Find Deal
Tue, Nov 4 - Thu, Nov 13
Frontier Logo
7:30 am - 11:50 pmSJU-ONT
20h 20m2 stops
Frontier Logo
7:44 pm - 5:54 pmONT-SJU
18h 10m2 stops
$331Frontier
Find Deal
Thu, Nov 13 - Mon, Nov 17
Frontier Logo
4:14 pm - 6:22 amSJU-ONT
18h 08m2 stops
Frontier Logo
7:44 pm - 5:54 pmONT-SJU
18h 10m2 stops
$346Frontier
Find Deal
Sat, Nov 8 - Mon, Nov 17
American Airlines Logo
3:56 pm - 10:29 pmSJU-ONT
10h 33m1 stop
American Airlines Logo
10:34 pm - 8:48 pmONT-SJU
18h 14m1 stop
$414American Airlines
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Tue, Nov 11 - Mon, Nov 17
United Airlines Logo
3:46 pm - 9:49 pmSJU-ONT
10h 03m1 stop
United Airlines Logo
5:05 am - 6:25 pmONT-SJU
9h 20m1 stop
$445United Airlines
Find Deal
Thu, Nov 13 - Mon, Nov 17
Delta Logo
3:20 pm - 11:52 pmSJU-ONT
12h 32m2 stops
Delta Logo
10:25 pm - 12:46 pmONT-SJU
10h 21m1 stop
$455Delta
Find Deal
Tue, Nov 11 - Mon, Nov 17
American Airlines Logo
3:56 pm - 12:03 pmSJU-ONT
24h 07m2 stops
American Airlines Logo
10:34 pm - 8:48 pmONT-SJU
18h 14m1 stop
$461American Airlines
Find Deal
Tue, Nov 11 - Mon, Nov 17
Delta Logo
3:20 pm - 11:52 pmSJU-ONT
12h 32m2 stops
Delta Logo
4:49 pm - 12:46 pmONT-SJU
15h 57m2 stops
$470Delta
Find Deal
Tue, Nov 11 - Mon, Nov 17
United Airlines Logo
2:25 pm - 8:50 pmSJU-ONT
10h 25m1 stop
United Airlines Logo
5:00 am - 6:25 pmONT-SJU
9h 25m1 stop
$483United Airlines
Find Deal
Thu, Feb 12 - Mon, Feb 16

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
Nov 11
SJU3:56 pmSan Juan Luis Munoz Marin Intl
10h 33m
1 stop
ONT10:29 pmOntario
Nov 17
ONT10:34 pmOntario
18h 14m
1 stop
SJU8:48 pmSan Juan Luis Munoz Marin Intl
$414
Find similar
American Airlines
Nov 11
SJU3:56 pmSan Juan Luis Munoz Marin Intl
24h 07m
2 stops
ONT12:03 pmOntario
Nov 17
ONT10:34 pmOntario
18h 14m
1 stop
SJU8:48 pmSan Juan Luis Munoz Marin Intl
$461
Find similar
American Airlines
Nov 1
SJU7:10 amSan Juan Luis Munoz Marin Intl
15h 57m
1 stop
ONT8:07 pmOntario
Nov 13
ONT10:34 pmOntario
14h 31m
1 stop
SJU5:05 pmSan Juan Luis Munoz Marin Intl
$511
Find similar

Frontier flights from San Juan Luis Munoz Marin Intl Airport to Ontario

Our best Frontier deals on San Juan Luis Munoz Marin Intl Airport to Ontario flight tickets
Frontier
Nov 13
SJU7:30 amSan Juan Luis Munoz Marin Intl
20h 20m
2 stops
ONT11:50 pmOntario
Nov 17
ONT7:44 pmOntario
18h 10m
2 stops
SJU5:54 pmSan Juan Luis Munoz Marin Intl
$331
Find similar
Frontier
Nov 8
SJU4:14 pmSan Juan Luis Munoz Marin Intl
18h 08m
2 stops
ONT6:22 amOntario
Nov 17
ONT7:44 pmOntario
18h 10m
2 stops
SJU5:54 pmSan Juan Luis Munoz Marin Intl
$346
Find similar
Frontier
Nov 12
SJU1:59 amSan Juan Luis Munoz Marin Intl
13h 11m
2 stops
ONT11:10 amOntario
Nov 15
ONT1:37 pmOntario
24h 17m
2 stops
SJU5:54 pmSan Juan Luis Munoz Marin Intl
$365
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 October 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

Mon 11/3

6:17 pm-8:42 pm

2 stops30h 25m

Ontario

Thu 11/13

11:59 am-7:39 pm

1 stop27h 40m

$306

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Tue 11/4

9:00 am-8:42 pm

2 stops39h 42m

Ontario

Thu 11/13

11:59 am-7:39 pm

1 stop27h 40m

$328

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Thu 11/13

7:30 am-11:50 pm

2 stops20h 20m

Ontario

Mon 11/17

7:44 pm-5:54 pm

2 stops18h 10m

$331

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Sat 11/8

4:14 pm-6:22 am

2 stops18h 08m

Ontario

Mon 11/17

7:44 pm-5:54 pm

2 stops18h 10m

$346

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Tue 11/11

3:56 pm-10:29 pm

1 stop10h 33m

Ontario

Mon 11/17

10:34 pm-8:48 pm

1 stop18h 14m

$414

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Thu 11/13

3:46 pm-9:49 pm

1 stop10h 03m

Ontario

Mon 11/17

5:05 am-6:25 pm

1 stop9h 20m

$445

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Tue 11/11

3:20 pm-11:52 pm

2 stops12h 32m

Ontario

Mon 11/17

10:25 pm-12:46 pm

1 stop10h 21m

$455

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Tue 11/11

3:56 pm-12:03 pm

2 stops24h 07m

Ontario

Mon 11/17

10:34 pm-8:48 pm

1 stop18h 14m

$461

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Tue 11/11

3:20 pm-11:52 pm

2 stops12h 32m

Ontario

Mon 11/17

4:49 pm-12:46 pm

2 stops15h 57m

$470

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

Thu 2/12

2:25 pm-8:50 pm

1 stop10h 25m

Ontario

Mon 2/16

5:00 am-6:25 pm

1 stop9h 25m

$483

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 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 October 2025, prices for San Juan Luis Munoz Marin Intl Airport to Ontario flights are approximately 37% 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
DeltaPriceFrom $344Free CancellationRating
7.9
7,982 reviews
Search Delta flights
American AirlinesPriceFrom $355Free CancellationRating
7.2
11,033 reviews
Search American Airlines flights
United AirlinesPriceFrom $433Free CancellationRating
7.4
8,995 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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