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$146+ Cheap flights from Puerto Rico to Ontario (ONT)

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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ONT
abr. 22 — abr. 291
mar. 4/22
mar. 4/29
1 adult, Economy
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Cheap flight deals from Puerto Rico to Ontario

Keep the following information in mind while searching for Puerto Rico to Ontario flight deals. Data was last updated abril 17, 2025.

Round-trip from

$494
(Delta)

One-way from

$146
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$445
From Puerto Rico to Ontario
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One-way flight from Puerto Rico to Ontario
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Highest demand for flights based on searches. 17% potential increase in price ($91 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Puerto Rico to Ontario

Cheapest flights from Puerto Rico to Ontario
Explore the most affordable flight options available from Puerto Rico to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.

This American Airlines deal was found by Cheapflights users on 4/17. 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.
jue. 11/209:35 amSJU - ONT
1 stop14h 36mAmerican Airlines
dom. 12/78:05 pmONT - SJU
2 stops13h 15mAmerican Airlines
Deal found 4/17$416
This United Airlines deal was found by Cheapflights users on 4/16. 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.
mar. 10/212:55 pmSJU - ONT
1 stop10h 01mUnited Airlines
mar. 10/285:40 amONT - SJU
1 stop8h 39mUnited Airlines
Deal found 4/16$445
This Southwest deal was found by Cheapflights users on 4/17. 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.
mié. 5/215:20 amSJU - ONT
2 stops13h 25mSouthwest
vie. 5/238:00 amONT - SJU
2 stops12h 55mSouthwest
Deal found 4/17$530
This JetBlue deal was found by Cheapflights users on 4/17. 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. 5/311:55 amSJU - ONT
1 stop12h 30mJetBlue
mié. 5/710:59 pmONT - SJU
1 stop10h 35mJetBlue
Deal found 4/17$596
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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. 12/24:35 pmSJU - ONT
2 stops29h 42mAlaska Airlines
mar. 12/96:00 pmONT - SJU
2 stops16h 40mAlaska Airlines
Deal found 4/17$927

Cheapflights Fare Finder

Customize your flight search to find flights from Puerto Rico to Ontario 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 abril 17, 2025.
Use the filters below to find and compare flights from Puerto Rico to Ontario that are best for you.

Fly from

Puerto Rico

Fly to

Ontario

Route

Depart

Return

Price

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

mié. 10/1

2:00 pm-8:33 pm

1 stop9h 33m

Ontario

jue. 10/9

5:10 am-5:30 pm

1 stop9h 20m

$520

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

mié. 5/21

5:20 am-3:45 pm

2 stops13h 25m

Ontario

vie. 5/23

8:00 am-11:55 pm

2 stops12h 55m

$530

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

mié. 10/1

8:30 am-11:36 pm

2 stops18h 06m

Ontario

jue. 10/9

8:04 pm-1:45 pm

2 stops14h 41m

$595

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

sáb. 5/3

11:55 am-9:25 pm

1 stop12h 30m

Ontario

mié. 5/7

10:59 pm-12:34 pm

1 stop10h 35m

$596

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

sáb. 5/3

6:05 am-10:51 am

2 stops31h 46m

Ontario

mié. 5/7

6:00 am-5:12 am

2 stops20h 12m

$1,074

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

mar. 4/29

9:30 pm-11:20 am

2 stops16h 50m

$146

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

jue. 5/8

11:58 am-9:11 pm

1 stop12h 13m

$195

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

vie. 5/9

2:55 pm-10:00 pm

1 stop10h 05m

$223

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

mar. 8/26

8:40 am-7:47 pm

1 stop14h 07m

$233

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

mar. 8/26

5:00 am-2:40 pm

2 stops12h 40m

$273

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 12 results
1
2

Best time to book a flight from Puerto Rico to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Puerto Rico to Ontario (average of $246). Flying from Puerto Rico to Ontario in March is currently the most expensive (average of $328). 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 PR to ONT?

Find hourly flight availability from Puerto Rico to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated abril 17, 2025.

When flying from Puerto Rico to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated abril 17, 2025.
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
JetBlue
7.3
Good
2,926 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

Find useful and relevant information for your journey from Puerto Rico to Ontario. 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 into for flights to Ontario from Puerto Rico?

    For a flight from Puerto Rico to Ontario, you will be flying into Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

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

    The cheapest airlines for a one-way flight from Puerto Rico to Ontario are Frontier ($146), JetBlue ($195), and United Airlines ($223).

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Puerto Rico to Ontario (average of $246). Flying from Puerto Rico to Ontario in March is currently the most expensive (average of $328). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Puerto Rico to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Puerto Rico to Ontario

Discover the top 3 airlines that operate flights from Puerto Rico to Ontario. 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 abril 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$344Average$664FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$347Average$480FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$390Average$654FlexibilityNo cancel feeOn-time69%

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