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Luis Munoz Marin Intl

$211+ Cheap flights from Ontario (ONT) to Luis Munoz Marin Intl (SJU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
mar 31 — apr 71
lun 3/31
lun 4/7
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to San Juan Luis Munoz Marin Intl are usually found in June or September, booked 24 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from Ontario to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Luis Munoz Marin Intl (SJU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated marzo 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$355
(American Airlines)

One-way from

$211
(Trip.com)

Popular in

March

Cheapest in

June

Average price

$738
Provider with most accurate pricing for Ontario-San Juan Luis Munoz Marin Intl flight deals.
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Provider most trusted by Cheapflights users for Ontario-San Juan Luis Munoz Marin Intl flights.
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From Ontario to San Juan Luis Munoz Marin Intl
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One-way flight from Ontario to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 5% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Ontario to Luis Munoz Marin Intl

Cheapest flights from Ontario to Luis Munoz Marin Intl
Explore the most affordable flight options available from Ontario to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 26, 2025.

This Delta deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 10/1110:59 pmONT - SJU
1 stop11h 24mDelta
ven 10/1712:57 pmSJU - ONT
1 stop9h 32mDelta
Deal found 3/25$355
This American Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 8/228:37 amONT - SJU
1 stop11h 23mAmerican Airlines
mer 8/275:30 amSJU - ONT
1 stop15h 02mAmerican Airlines
Deal found 3/25$405
This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 8/226:36 pmONT - SJU
2 stops14h 58mUnited Airlines
mer 8/277:00 amSJU - ONT
2 stops13h 42mUnited Airlines
Deal found 3/25$407
This Trip.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sab 4/128:39 amONT - SJU
2 stops20h 54mFrontier
lun 4/1412:59 amSJU - ONT
2 stops19h 57mFrontier
Deal found 3/25$459
This JetBlue deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 6/1010:40 pmONT - SJU
1 stop14h 15mJetBlue
mer 6/1811:00 amSJU - ONT
1 stop14h 30mJetBlue
Deal found 3/25$496
This Southwest deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 7/168:10 pmONT - SJU
2 stops11h 15mSouthwest
sab 7/265:00 amSJU - ONT
2 stops12h 55mSouthwest
Deal found 3/25$554

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Luis Munoz Marin Intl 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, Cheapflights users made 2,558,603 searches. Data last updated marzo 26, 2025.
Use the filters below to find and compare flights from Ontario to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Ontario

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mar 4/22

11:59 pm-5:14 pm

2 stops14h 15m

San Juan Luis Munoz Marin Intl

sab 4/26

6:21 am-6:20 pm

2 stops14h 59m

$355

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

ven 8/22

6:36 pm-12:34 pm

2 stops14h 58m

San Juan Luis Munoz Marin Intl

mer 8/27

7:00 am-5:42 pm

2 stops13h 42m

$407

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

sab 4/12

8:39 am-8:33 am

2 stops20h 54m

San Juan Luis Munoz Marin Intl

lun 4/14

12:59 am-5:56 pm

2 stops19h 57m

$459

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mar 6/10

10:40 pm-3:55 pm

1 stop14h 15m

San Juan Luis Munoz Marin Intl

mer 6/18

11:00 am-10:30 pm

1 stop14h 30m

$496

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mer 7/16

8:10 pm-10:25 am

2 stops11h 15m

San Juan Luis Munoz Marin Intl

sab 7/26

5:00 am-2:55 pm

2 stops12h 55m

$554

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

ven 8/1

10:59 pm-1:23 pm

1 stop11h 24m

San Juan Luis Munoz Marin Intl

mar 8/5

2:28 pm-10:29 pm

1 stop11h 01m

$705

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

gio 4/24

8:44 am-11:39 pm

1 stop11h 55m

$211

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

gio 5/15

10:40 pm-3:00 pm

1 stop13h 20m

$213

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

sab 5/24

5:22 pm-8:21 pm

2 stops23h 59m

$218

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mar 5/13

6:08 am-8:38 pm

1 stop11h 30m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 13 results
1
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Compare providers for flights from Ontario to Luis Munoz Marin Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Luis Munoz Marin Intl in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-San Juan Luis Munoz Marin Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to San Juan Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Ontario to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Luis Munoz Marin Intl. Price data was last updated on March 21, 2025.

The best time to book flights from Ontario to San Juan Luis Munoz Marin Intl Airport is 24 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Ontario to San Juan Luis Munoz Marin Intl Airport?

Currently, September is the cheapest month in which you can book a flight from Ontario to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Ontario to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $336). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to SJU?

Find hourly flight availability from Ontario to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated marzo 26, 2025.

One of the essential ways to save on airfare from Ontario to San Juan Luis Munoz Marin Intl Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 27% on airfare.

What is the cheapest day to fly from Ontario to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Luis Munoz Marin Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan Luis Munoz Marin Intl Airport when rainfall is around 2.2 in.

Temperature in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Luis Munoz Marin Intl. Reviews last updated marzo 26, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Ontario to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,789 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,891 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,608 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
JetBlue
7.3
Good
2,923 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to San Juan Luis Munoz Marin Intl?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to San Juan Luis Munoz Marin Intl. 6 airlines have flights from Ontario to San Juan Luis Munoz Marin Intl on a regular basis. Booking flights from Ontario to San Juan Luis Munoz Marin Intl should not be difficult; the airport handles an average of 0 outbound flights to San Juan Luis Munoz Marin Intl per day.

  • What are the cheapest airlines flying from Ontario to San Juan Luis Munoz Marin Intl Airport round-trip?

    Cheapflights users have booked flights from Ontario to San Juan Luis Munoz Marin Intl Airport round-trip from $355. Other airlines that can offer you cheap pricing are Delta, from $404, and United Airlines, from $407. American Airlines is currently priced 35% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Ontario to San Juan Luis Munoz Marin Intl Airport one-way?

    The cheapest airlines for a one-way flight from Ontario to San Juan Luis Munoz Marin Intl Airport are American Airlines ($213), Frontier ($218), and United Airlines ($223).

  • Can I find deals for flights from Ontario to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Ontario to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Luis Munoz Marin Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Luis Munoz Marin Intl.

  • Can I find deals for business class flights from Ontario to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Ontario to Luis Munoz Marin Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to San Juan Luis Munoz Marin Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Ontario to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Ontario to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $336). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Dorado
Fajardo
Luquillo
Humacao
Rio Grande
Bayamón

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Alternative routes for Ontario to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Ontario to Luis Munoz Marin Intl

Discover the top 6 airlines that operate flights from Ontario to Luis Munoz Marin Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated marzo 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$328FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$273Average$418FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$322Average$628FlexibilityNo cancel feeOn-time69%
DeltaCheapest$334Average$478FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$358Average$608FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$374Average$568FlexibilityNo cancel feeOn-time63%
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