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Puerto Rico

$109+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
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Cheap flight deals from Ontario to Puerto Rico

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Puerto Rico (PR0). 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 January 17, 2025.

Round-trip from

$345
(Delta)

One-way from

$109
(Trip.com)
From Ontario to Puerto Rico
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One-way flight from Ontario to Puerto Rico
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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 January 17, 2025.

This American Airlines deal was found by Cheapflights users on 1/16. 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.
Sat 9/68:04 pmONT - SJU
2 stops15h 43mAmerican Airlines
Wed 9/108:30 amSJU - ONT
2 stops16h 10mAmerican Airlines
Deal found 1/16$345
This United Airlines deal was found by Cheapflights users on 1/16. 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.
Tue 2/46:00 amONT - SJU
2 stops14h 36mUnited Airlines
Fri 2/78:10 amSJU - ONT
2 stops17h 47mUnited Airlines
Deal found 1/16$358
This Delta deal was found by Cheapflights users on 1/16. 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.
Fri 10/2410:59 pmONT - SJU
1 stop11h 42mDelta
Fri 11/73:45 pmSJU - ONT
1 stop10h 44mDelta
Deal found 1/16$365
This United Airlines deal was found by Cheapflights users on 1/16. 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.
Tue 3/46:00 amONT - BQN
2 stops13h 57mUnited Airlines
Mon 5/512:15 amBQN - ONT
2 stops15h 23mUnited Airlines
Deal found 1/16$375
This Southwest deal was found by Cheapflights users on 1/16. 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 4/305:45 amONT - SJU
2 stops13h 45mSouthwest
Sun 5/45:50 amSJU - ONT
2 stops11h 00mSouthwest
Deal found 1/16$490
This Trip.com deal was found by Cheapflights users on 1/15. 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.
Fri 3/212:43 pmONT - SJU
2 stops25h 09mFrontier
Fri 3/289:31 pmSJU - ONT
2 stops36h 55mFrontier
Deal found 1/15$498
This JetBlue deal was found by Cheapflights users on 1/16. 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.
Sun 8/1010:40 pmONT - SJU
1 stop10h 51mJetBlue
Thu 8/1412:30 pmSJU - ONT
1 stop11h 54mJetBlue
Deal found 1/16$570
This Alaska Airlines deal was found by Cheapflights users on 1/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/236:00 amONT - SJU
2 stops28h 54mAlaska Airlines
Sat 3/16:30 amSJU - ONT
2 stops21h 28mAlaska Airlines
Deal found 1/15$796
This JetBlue deal was found by Cheapflights users on 1/16. 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.
Sun 6/811:37 pmONT - BQN
1 stop13h 45mJetBlue
Fri 6/139:46 amBQN - ONT
1 stop14h 38mJetBlue
Deal found 1/16$957

Find flights from Ontario to Puerto Rico within your budget

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 January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 2/19

7:05 am-11:46 pm

1 stop12h 41m

San Juan Luis Munoz Marin Intl

Thu 2/27

2:00 pm-10:52 pm

1 stop12h 52m

$345

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 2/4

6:00 am-12:36 am

2 stops14h 36m

San Juan Luis Munoz Marin Intl

Fri 2/7

8:10 am-9:57 pm

2 stops17h 47m

$358

OntarioAguadilla

ONT - BQN

ONTBQN

Ontario

Tue 3/4

6:00 am-11:57 pm

2 stops13h 57m

Aguadilla Borinquen

Mon 5/5

12:15 am-12:38 pm

2 stops15h 23m

$375

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 4/16

12:50 pm-4:50 am

2 stops13h 00m

San Juan Luis Munoz Marin Intl

Wed 4/23

7:15 am-8:59 pm

1 stop16h 44m

$405

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 4/9

2:43 pm-10:40 pm

2 stops28h 57m

San Juan Luis Munoz Marin Intl

Thu 4/17

2:12 pm-7:25 am

2 stops20h 13m

$462

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 4/30

5:45 am-10:30 pm

2 stops13h 45m

San Juan Luis Munoz Marin Intl

Sun 5/4

5:50 am-1:50 pm

2 stops11h 00m

$490

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 3/1

6:00 am-5:09 am

2 stops19h 09m

San Juan Luis Munoz Marin Intl

Tue 3/4

6:30 am-11:02 am

2 stops32h 32m

$890

OntarioAguadilla

ONT - BQN

ONTBQN

Ontario

Sun 6/8

11:37 pm-4:22 pm

1 stop13h 45m

Aguadilla Borinquen

Fri 6/13

9:46 am-9:24 pm

1 stop14h 38m

$957

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 3/3

5:13 pm-2:02 pm

2 stops16h 49m

$109

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 3/5

7:05 am-11:46 pm

1 stop12h 41m

$173

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 14 results
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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.

Travel insights for flights from Ontario to Puerto Rico

Get recent, data-driven insights about flights from Ontario to Puerto Rico including ideal travel times, pricing trends, and more.

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 March is currently the most expensive (average of $378). 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 January 17, 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 January 17, 2025.
Read reviews from past customers who have flown Alaska Airlines and United Airlines 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
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,681 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

JetBlue
7.4
Good
3,199 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
8,965 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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 $109 on Frontier. Other airlines that offer cheap prices include Delta from $173 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 March is currently the most expensive (average of $378). 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 January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$260Average$328FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$273Average$455FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$322Average$661FlexibilityNo cancel feeOn-time69%
DeltaCheapest$334Average$472FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$358Average$633FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$374Average$634FlexibilityNo cancel feeOn-time63%
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