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Ontario

$213+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ONT
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
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 julio 31, 2025.

Round-trip from

$410
(JetBlue)

One-way from

$213
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$515
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. 8% potential increase in price ($39 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 July 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 julio 31, 2025.

This JetBlue deal was found by Cheapflights users on 7/31. 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.
mar. 9/301:25 pmSJU - ONT
1 stop11h 04mJetBlue
sáb. 10/1110:56 pmONT - SJU
1 stop12h 58mJetBlue
Deal found 7/31$410
This American Airlines deal was found by Cheapflights users on 7/29. 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.
mar. 9/306:10 amSJU - ONT
2 stops18h 14mAmerican Airlines
sáb. 10/1110:09 amONT - SJU
2 stops10h 45mAmerican Airlines
Deal found 7/29$411
This United Airlines deal was found by Cheapflights users on 7/28. 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. 10/316:45 amSJU - ONT
2 stops13h 49mUnited Airlines
lun. 11/37:00 amONT - SJU
1 stop10h 00mUnited Airlines
Deal found 7/28$425

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 julio 31, 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

mar. 9/30

1:25 pm-9:29 pm

1 stop11h 04m

Ontario

sáb. 10/11

10:56 pm-2:54 pm

1 stop12h 58m

$410

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

mar. 9/30

6:10 am-9:24 pm

2 stops18h 14m

Ontario

sáb. 10/11

10:09 am-11:54 pm

2 stops10h 45m

$411

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

vie. 10/31

6:45 am-5:34 pm

2 stops13h 49m

Ontario

lun. 11/3

7:00 am-9:00 pm

1 stop10h 00m

$425

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

sáb. 9/27

7:00 am-8:24 pm

2 stops16h 24m

$213

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

lun. 8/25

7:05 pm-9:58 am

2 stops17h 53m

$219

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

vie. 8/8

3:34 am-4:20 pm

2 stops15h 46m

$232

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

sáb. 9/27

1:25 pm-9:29 pm

1 stop11h 04m

$247

San JuanOntario

SJU - ONT

SJUONT

San Juan Luis Munoz Marin Intl

lun. 10/6

3:00 pm-12:37 pm

2 stops24h 37m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 julio 31, 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.

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 julio 31, 2025.
Read through reviews of airlines operating flights from Puerto Rico to Ontario, such as Alaska Airlines, United Airlines, and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,902 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,913 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Frontier
5.9
Fair
3,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 United Airlines ($213), American Airlines ($219), and Frontier ($232).

  • 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

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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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$344Average$644FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$355Average$535FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$395Average$734FlexibilityNo cancel feeOn-time69%

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