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 American Airlines, from $405, and JetBlue, from $407. Delta 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 JetBlue ($195), United Airlines ($243), and Frontier ($245).

What are the most popular airlines that fly from Ontario to San Juan Luis Munoz Marin Intl Airport?

When booking a flight from Ontario to San Juan Luis Munoz Marin Intl Airport, you may want to consider flying on American Airlines, JetBlue or Delta as they are the most popular for this route.

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

Departing on a Monday is a good option for securing a great price. You can expect to save up to 62% when planning your travel around this day of the week.

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

September is one of the best times of the year to fly to San Juan Luis Munoz Marin Intl Airport from Ontario. Prices for September average $469 per person but you can even find prices for as low as $261. The most expensive prices can be found in the month of December. Opting for a September flight can save you 42% on your journey compared to booking in December

Most accurate provider : When it comes to deals on Ontario-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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.

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.

$144+ Flights from Ontario to San Juan Luis Munoz Marin Intl Airport

Q: How far in advance should I book a flight from Ontario to San Juan Luis Munoz Marin Intl Airport?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 51 days in advance, which can save you up to 57% on flights from Ontario to San Juan Luis Munoz Marin Intl Airport compared to booking the week you need them. Waiting 51 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $373. For sooner than that we have options available in the next 3 days from $613.

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Find cheap flights from Ontario to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$355 (Delta)
One-way from	$144 (Trip.com)
Popular in	March
Cheapest in	June
Average price	$478

Provider with most accurate pricing for Ontario-San Juan Luis Munoz Marin Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-San Juan Luis Munoz Marin Intl flights.

Search Deals

From Ontario to San Juan Luis Munoz Marin Intl

Search Deals

One-way flight from Ontario to San Juan Luis Munoz Marin Intl

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($47 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 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 April 15, 2025.

Fri 8/1510:59 pmONT - SJU

1 stop9h 52mDelta

Fri 8/292:39 pmSJU - ONT

1 stop10h 50mDelta

Deal found 4/14

$355

Wed 9/108:04 pmONT - SJU

2 stops17h 16mAmerican Airlines

Thu 9/188:30 amSJU - ONT

2 stops18h 06mAmerican Airlines

Deal found 4/14

$405

Mon 5/1210:59 pmONT - SJU

1 stop10h 35mJetBlue

Wed 5/1411:58 amSJU - ONT

1 stop12h 13mJetBlue

Deal found 4/15

$407

Mon 5/55:05 amONT - SJU

1 stop9h 25mUnited Airlines

Wed 5/71:05 amSJU - ONT

2 stops16h 20mUnited Airlines

Deal found 4/14

$445

Sat 5/245:50 amONT - SJU

2 stops12h 50mSouthwest

Thu 5/295:35 amSJU - ONT

2 stops13h 35mSouthwest

Deal found 4/14

$485

Best flights from Ontario to Luis Munoz Marin Intl
Discover carefully curated flight deals from Ontario to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 15, 2025.

Fri 8/1510:59 pmONT - SJU

1 stop9h 52mDelta

Fri 8/292:39 pmSJU - ONT

1 stop10h 50mDelta

Deal found 4/14

$355

Wed 9/108:04 pmONT - SJU

2 stops17h 16mAmerican Airlines

Thu 9/188:30 amSJU - ONT

2 stops18h 06mAmerican Airlines

Deal found 4/14

$405

Mon 5/1210:59 pmONT - SJU

1 stop10h 35mJetBlue

Wed 5/1411:58 amSJU - ONT

1 stop12h 13mJetBlue

Deal found 4/15

$407

Mon 5/55:05 amONT - SJU

1 stop9h 25mUnited Airlines

Wed 5/71:05 amSJU - ONT

2 stops16h 20mUnited Airlines

Deal found 4/14

$445

Sat 5/245:50 amONT - SJU

2 stops12h 50mSouthwest

Thu 5/295:35 amSJU - ONT

2 stops13h 35mSouthwest

Deal found 4/14

$485

Tue 4/296:00 amONT - SJU

2 stops20h 00mAlaska Airlines

Fri 5/26:05 amSJU - ONT

2 stops31h 46mAlaska Airlines

Deal found 4/14

$795

Last-minute flights from Ontario to Luis Munoz Marin Intl
Discover last-minute flight deals from Ontario to Luis Munoz Marin Intl. Data last updated April 15, 2025 and is based on user searches.

Mon 4/217:17 pmONT - SJU

2 stops30h 43mAlaska Airlines

Fri 4/256:05 amSJU - ONT

2 stops31h 46mAlaska Airlines

Deal found 4/14

$1,116

Thu 4/242:44 pmONT - SJU

1 stop11h 16mAmerican Airlines

Wed 4/306:05 amSJU - ONT

2 stops12h 54mAmerican Airlines

Deal found 4/14

$585

Thu 4/245:00 amONT - SJU

1 stop9h 30mUnited Airlines

Tue 4/291:05 amSJU - ONT

2 stops14h 33mUnited Airlines

Deal found 4/14

$636

Tue 4/296:00 amONT - SJU

2 stops20h 00mAlaska Airlines

Fri 5/26:05 amSJU - ONT

2 stops31h 46mAlaska Airlines

Deal found 4/14

$795

Mon 5/57:25 pmONT - SJU

2 stops12h 45mAmerican Airlines

Thu 5/87:15 amSJU - ONT

2 stops14h 08mAmerican Airlines

Deal found 4/14

$410

Mon 5/55:05 amONT - SJU

1 stop9h 25mUnited Airlines

Wed 5/71:05 amSJU - ONT

2 stops16h 20mUnited Airlines

Deal found 4/14

$445

Mon 5/1210:59 pmONT - SJU

1 stop10h 35mJetBlue

Wed 5/1411:58 amSJU - ONT

1 stop12h 13mJetBlue

Deal found 4/15

$407

Thu 5/1511:25 pmONT - SJU

3 stops33h 30mMultiple Airlines

Mon 5/191:59 amSJU - ONT

3 stops24h 14mMultiple Airlines

Deal found 4/14

$997

Sat 5/247:05 amONT - SJU

1 stop12h 42mDelta

Thu 5/2912:50 pmSJU - ONT

1 stop12h 39mDelta

Deal found 4/14

$390

Sat 5/245:50 amONT - SJU

2 stops12h 50mSouthwest

Thu 5/295:35 amSJU - ONT

2 stops13h 35mSouthwest

Deal found 4/14

$485

One-way flights from Ontario to Luis Munoz Marin Intl
Search for one-way flight options from Ontario to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated April 15, 2025.

Sat 5/176:47 pmONT - SJU

1 stop14h 57mMultiple Airlines

Deal found 4/14

$144

Mon 5/1210:59 pmONT - SJU

1 stop10h 35mJetBlue

Deal found 4/15

$195

Sat 7/126:38 pmONT - SJU

2 stops14h 56mUnited Airlines

Deal found 4/14

$243

Fri 5/1610:52 amONT - SJU

2 stops23h 01mFrontier

Deal found 4/14

$245

Sun 6/226:23 amONT - SJU

2 stops19h 43mAmerican Airlines

Deal found 4/14

$284

Fri 6/205:45 pmONT - SJU

2 stops16h 40mDelta

Deal found 4/14

$313

Thu 6/126:58 pmONT - SJU

2 stops16h 08mAlaska Airlines

Deal found 4/14

$3,111

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fri 8/15

10:59 pm-11:51 am

1 stop9h 52m

San Juan Luis Munoz Marin Intl

Fri 8/29

2:39 pm-10:29 pm

1 stop10h 50m

$355

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 9/10

8:04 pm-4:20 pm

2 stops17h 16m

San Juan Luis Munoz Marin Intl

Thu 9/18

8:30 am-11:36 pm

2 stops18h 06m

$405

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 5/12

10:59 pm-12:34 pm

1 stop10h 35m

San Juan Luis Munoz Marin Intl

Wed 5/14

11:58 am-9:11 pm

1 stop12h 13m

$407

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 5/5

5:05 am-5:30 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Wed 5/7

1:05 am-2:25 pm

2 stops16h 20m

$445

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 5/24

5:50 am-9:40 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

Thu 5/29

5:35 am-4:10 pm

2 stops13h 35m

$485

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 4/29

6:00 am-5:00 am

2 stops20h 00m

San Juan Luis Munoz Marin Intl

Fri 5/2

6:05 am-10:51 am

2 stops31h 46m

$795

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 5/17

6:47 pm-12:44 pm

1 stop14h 57m

$144

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 5/12

10:59 pm-12:34 pm

1 stop10h 35m

$195

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 7/12

6:38 pm-12:34 pm

2 stops14h 56m

$243

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fri 5/16

10:52 am-12:53 pm

2 stops23h 01m

$245

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 13 results

Compare providers for flights from Ontario to Luis Munoz Marin Intl

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 April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star

*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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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?

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?

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?

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

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

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

See what other customers who have flown with Alaska Airlines, Southwest 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.

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,871 reviews

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Southwest

8.0

Very good

4,279 reviews

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,918 reviews

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,658 reviews

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

JetBlue

7.3

Good

2,927 reviews

Alaska Airlines

8.0

Very good

9,871 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

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 American Airlines, from $405, and JetBlue, from $407. Delta 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 JetBlue ($195), United Airlines ($243), and Frontier ($245).
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

Dorado

Fajardo

Luquillo

Rio Grande

Humacao

Bayamón

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Top 6 airlines flying from Ontario to Luis Munoz Marin Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$84	Average$328	FlexibilityNo cancel fee	On-time62%
JetBlue	Cheapest$273	Average$418	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$322	Average$620	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$334	Average$495	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$357	Average$610	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$389	Average$575	FlexibilityNo cancel fee	On-time63%

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$144+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Luis Munoz Marin Intl

Cheapest flights from Ontario to Luis Munoz Marin IntlExplore 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 April 15, 2025.

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 April 15, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to San Juan Luis Munoz Marin Intl Airport that are best for you.

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 April.

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.

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 April 11, 2025.

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

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 April 15, 2025.

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.

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.

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.

Reviews of airlines servicing Luis Munoz Marin Intl

See what other customers who have flown with Alaska Airlines, Southwest 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.

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?

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

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

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

How can I 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?

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

Traveling to a place near Ontario?

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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.

Top 6 airlines flying from Ontario to Luis Munoz Marin Intl

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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 April 15, 2025.