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Puerto Rico

$211+ Cheap flights from Ontario (ONT) to Puerto Rico

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
Mon 3/31
Mon 4/7
1 adult, Economy
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Cheap flight deals from Ontario to Puerto Rico

Keep the following information in mind while searching for Ontario to Puerto Rico flight deals. Data was last updated March 26, 2025.

Round-trip from

$355
(American Airlines)

One-way from

$211
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$501
From Ontario to Puerto Rico
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One-way flight from Ontario to Puerto Rico
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Highest demand for flights based on searches. 9% potential increase in price ($51 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($19 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 Puerto Rico

Cheapest flights from Ontario to Puerto Rico
Explore the most affordable flight options available from Ontario to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 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.
Sat 10/1110:59 pmONT - SJU
1 stop11h 24mDelta
Fri 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.
Fri 8/228:37 amONT - SJU
1 stop11h 23mAmerican Airlines
Wed 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.
Fri 8/226:36 pmONT - SJU
2 stops14h 58mUnited Airlines
Wed 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.
Sat 4/128:39 amONT - SJU
2 stops20h 54mFrontier
Mon 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.
Tue 6/1010:40 pmONT - SJU
1 stop14h 15mJetBlue
Wed 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.
Wed 7/168:10 pmONT - SJU
2 stops11h 15mSouthwest
Sat 7/265:00 amSJU - ONT
2 stops12h 55mSouthwest
Deal found 3/25$554
This United Airlines deal was found by Cheapflights users on 3/24. 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.
Fri 3/285:05 amONT - BQN
2 stops14h 52mUnited Airlines
Sat 3/2912:15 amBQN - ONT
2 stops15h 00mUnited Airlines
Deal found 3/24$675
This United 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/296:41 pmONT - BQN
2 stops25h 28mMultiple Airlines
Tue 6/312:15 amBQN - ONT
2 stops25h 30mMultiple Airlines
Deal found 3/25$1,190

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Puerto Rico 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 March 26, 2025.
Use the filters below to find and compare flights from Ontario to Puerto Rico that are best for you.

Fly from

Ontario

Fly to

Puerto Rico

Route

Depart

Return

Price

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 4/22

11:59 pm-5:14 pm

2 stops14h 15m

San Juan Luis Munoz Marin Intl

Sat 4/26

6:21 am-6:20 pm

2 stops14h 59m

$355

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fri 8/22

6:36 pm-12:34 pm

2 stops14h 58m

San Juan Luis Munoz Marin Intl

Wed 8/27

7:00 am-5:42 pm

2 stops13h 42m

$407

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 4/12

8:39 am-8:33 am

2 stops20h 54m

San Juan Luis Munoz Marin Intl

Mon 4/14

12:59 am-5:56 pm

2 stops19h 57m

$459

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 6/10

10:40 pm-3:55 pm

1 stop14h 15m

San Juan Luis Munoz Marin Intl

Wed 6/18

11:00 am-10:30 pm

1 stop14h 30m

$496

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 7/16

8:10 pm-10:25 am

2 stops11h 15m

San Juan Luis Munoz Marin Intl

Sat 7/26

5:00 am-2:55 pm

2 stops12h 55m

$554

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fri 8/1

10:59 pm-1:23 pm

1 stop11h 24m

San Juan Luis Munoz Marin Intl

Tue 8/5

2:28 pm-10:29 pm

1 stop11h 01m

$705

OntarioAguadilla

ONT - BQN

ONTBQN

Ontario

Wed 5/21

5:05 am-11:09 pm

2 stops15h 04m

Aguadilla Borinquen

Tue 5/27

12:15 am-12:31 pm

2 stops15h 16m

$775

OntarioAguadilla

ONT - BQN

ONTBQN

Ontario

Thu 5/29

6:41 pm-11:09 pm

2 stops25h 28m

Aguadilla Borinquen

Tue 6/3

12:15 am-10:45 pm

2 stops25h 30m

$1,190

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 4/24

8:44 am-11:39 pm

1 stop11h 55m

$211

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 5/15

10:40 pm-3:00 pm

1 stop13h 20m

$213

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 16 results
1
2

Best time to book a flight from Ontario to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico 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 Puerto Rico

What is the cheapest month to book a flight from Ontario to Puerto Rico?

Currently, September is the cheapest month in which you can book a flight from Ontario to Puerto Rico (average of $254). Flying from Ontario to Puerto Rico 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 PR?

Find hourly flight availability from Ontario to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 26, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Puerto Rico as you normally would.

Rainfall in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Puerto Rico 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 Puerto Rico when rainfall is around 2.2 in.

Temperature in Puerto Rico by month

Plan your trip to Puerto Rico by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Puerto Rico, 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 Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. 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 Puerto Rico. Reviews last updated March 26, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Ontario to Puerto Rico. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

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
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

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
4,273 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

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
4,273 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

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
4,273 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

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
2,922 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Food

7.1

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 Puerto Rico. 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 Puerto Rico?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Puerto Rico. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • What are the cheapest airlines to fly from Ontario to Puerto Rico one-way?

    One-way options have recently been found by users for as low as $213 on American Airlines. Other airlines that offer cheap prices include Frontier from $218 and United Airlines from $223 one-way.

  • Can I find deals for flights from Ontario to Puerto Rico that include hotel bookings?

    Yes. In addition to deals on Ontario to Puerto Rico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Puerto Rico?

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

  • Can I find deals for business class flights from Ontario to Puerto Rico?

    Yes. Cheapflights offers flight deals from Ontario to Puerto Rico 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 Puerto Rico?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Puerto Rico (average of $254). Flying from Ontario to Puerto Rico 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

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Alternative routes for Ontario to Puerto Rico

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 Puerto Rico

Discover the top 6 airlines that operate flights from Ontario to Puerto Rico. 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 March 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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