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$127+ 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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
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 febrero 20, 2025.

Round-trip from

$274
(Trip.com)

One-way from

$127
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$426
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 ($48 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 February 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 febrero 20, 2025.

This Trip.com deal was found by Cheapflights users on 2/19. 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.
mié. 3/512:59 amONT - SJU
2 stops41h 45mFrontier
lun. 3/109:35 pmSJU - ONT
2 stops29h 29mFrontier
Deal found 2/19$198
This Delta deal was found by Cheapflights users on 2/19. 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.
mié. 4/27:00 amONT - SJU
1 stop13h 07mDelta
mié. 4/163:34 pmSJU - ONT
1 stop10h 02mDelta
Deal found 2/19$355
This JetBlue deal was found by Cheapflights users on 2/19. 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.
sáb. 5/310:40 pmONT - SJU
1 stop10h 50mJetBlue
jue. 5/811:55 amSJU - ONT
1 stop12h 27mJetBlue
Deal found 2/19$390
This United Airlines deal was found by Cheapflights users on 2/19. 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.
mié. 4/165:00 amONT - SJU
2 stops15h 54mUnited Airlines
mar. 4/291:05 amSJU - ONT
2 stops14h 33mUnited Airlines
Deal found 2/19$403
This American Airlines deal was found by Cheapflights users on 2/19. 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.
mié. 4/166:15 amONT - SJU
2 stops11h 13mAmerican Airlines
mié. 4/3011:45 amSJU - ONT
2 stops13h 13mAmerican Airlines
Deal found 2/19$405
This Southwest deal was found by Cheapflights users on 2/19. 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.
jue. 9/118:50 amONT - SJU
2 stops12h 00mSouthwest
lun. 9/155:00 amSJU - ONT
2 stops12h 15mSouthwest
Deal found 2/19$490
This United Airlines deal was found by Cheapflights users on 2/18. 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.
vie. 2/285:05 amONT - BQN
2 stops14h 52mUnited Airlines
mar. 3/1112:09 amBQN - ONT
2 stops15h 35mUnited Airlines
Deal found 2/18$565
This Trip.com deal was found by Cheapflights users on 2/19. 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.
jue. 3/2012:59 amONT - BQN
2 stops21h 57mFrontier
jue. 3/272:46 amBQN - ONT
2 stops45h 23mFrontier
Deal found 2/19$721
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
mar. 5/66:00 amONT - SJU
2 stops29h 00mAlaska Airlines
mar. 5/136:20 amSJU - ONT
2 stops20h 38mAlaska Airlines
Deal found 2/19$827
This United deal was found by Cheapflights users on 2/20. 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.
vie. 3/76:00 amONT - BQN
3 stops36h 57mMultiple Airlines
sáb. 3/1512:09 amBQN - ONT
2 stops37h 53mMultiple Airlines
Deal found 2/20$1,398

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 febrero 20, 2025.

Fly from

Ontario

Fly to

Puerto Rico

Route

Depart

Return

Price

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mar. 4/1

12:59 am-1:14 am

2 stops21h 15m

San Juan Luis Munoz Marin Intl

mar. 4/8

9:28 am-11:59 pm

2 stops17h 31m

$274

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mié. 4/16

6:15 am-8:28 pm

2 stops11h 13m

San Juan Luis Munoz Marin Intl

mié. 4/23

3:20 pm-10:10 pm

1 stop9h 50m

$405

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

lun. 4/14

7:20 pm-10:20 am

2 stops12h 00m

San Juan Luis Munoz Marin Intl

vie. 4/18

7:40 am-4:10 pm

2 stops11h 30m

$465

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

sáb. 4/26

6:10 am-8:38 pm

1 stop11h 28m

San Juan Luis Munoz Marin Intl

mar. 4/29

1:40 pm-8:42 pm

1 stop10h 02m

$520

OntarioAguadilla

ONT - BQN

ONTBQN

Ontario

vie. 2/28

5:05 am-11:57 pm

2 stops14h 52m

Aguadilla Borinquen

mar. 3/11

12:09 am-12:44 pm

2 stops15h 35m

$565

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

dom. 2/23

5:10 pm-12:45 pm

2 stops15h 35m

San Juan Luis Munoz Marin Intl

vie. 3/7

2:00 pm-10:52 pm

1 stop12h 52m

$615

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mié. 5/7

10:40 pm-12:30 pm

1 stop10h 50m

San Juan Luis Munoz Marin Intl

dom. 5/11

11:55 am-9:22 pm

1 stop12h 27m

$627

OntarioAguadilla

ONT - BQN

ONTBQN

Ontario

jue. 3/20

12:59 am-1:56 am

2 stops21h 57m

Aguadilla Borinquen

jue. 3/27

2:46 am-9:09 pm

2 stops45h 23m

$721

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

vie. 3/7

12:58 am-2:23 am

3 stops45h 25m

San Juan Luis Munoz Marin Intl

lun. 3/10

8:03 pm-7:23 pm

3 stops26h 20m

$795

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

vie. 4/25

6:00 am-2:27 pm

2 stops29h 27m

San Juan Luis Munoz Marin Intl

mar. 4/29

6:05 am-10:51 am

2 stops31h 46m

$947

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

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 $363). 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 febrero 20, 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 febrero 20, 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
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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 $127 on Frontier. Other airlines that offer cheap prices include United Airlines from $223 and American Airlines from $309 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 $363). 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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$260Average$328FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$273Average$418FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$322Average$642FlexibilityNo cancel feeOn-time69%
DeltaCheapest$334Average$474FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$355Average$608FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$374Average$568FlexibilityNo cancel feeOn-time63%
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