$130 Find Cheap Flights from Puerto Rico to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Ontario departing on 1/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$283
Overall average: $471
American Airlines
Thu 2/19Thu 2/26
SJU - ONT • 1 stop
Cheapest one-way
$130
Typical prices: $167-$338
Multiple Airlines
Thu 1/22
SJU - ONT • 2 stops
When to travel
July
Cheapest • 29% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Puerto Rico to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Puerto Rico to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Puerto Rico to Ontario

Thu, Feb 19 - Thu, Feb 26
American Airlines Logo
7:33 am - 11:59 pm
SJU
-
ONT
20h 26m1 stop
American Airlines Logo
6:15 am - 11:34 pm
ONT
-
SJU
13h 19m2 stops
$283American Airlines
Wed, Jan 14 - Sun, Jan 18
Multiple Airlines Logo
7:34 pm - 11:59 pm
SJU
-
ONT
32h 25m2 stops
Multiple Airlines Logo
7:56 pm - 12:27 pm
ONT
-
SJU
12h 31m1 stop
$294Multiple Airlines
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
2:25 pm - 8:58 pm
SJU
-
ONT
10h 33m1 stop
United Airlines Logo
6:00 am - 9:26 pm
ONT
-
SJU
11h 26m1 stop
$373United Airlines
Wed, Jan 14 - Sun, Jan 18
Multiple Airlines Logo
7:44 pm - 1:48 pm
SJU
-
ONT
22h 04m1 stop
Multiple Airlines Logo
7:56 pm - 12:27 pm
ONT
-
SJU
12h 31m1 stop
$378Multiple Airlines
Tue, Jan 13 - Sat, Jan 17
American Airlines Logo
3:54 pm - 10:48 pm
SJU
-
ONT
10h 54m1 stop
American Airlines Logo
7:16 am - 10:26 pm
ONT
-
SJU
11h 10m1 stop
$399American Airlines
Thu, Feb 19 - Thu, Feb 26
American Airlines Logo
7:33 am - 10:29 pm
SJU
-
ONT
18h 56m1 stop
American Airlines Logo
6:00 am - 11:31 pm
ONT
-
SJU
13h 31m1 stop
$404American Airlines
Wed, Jan 14 - Sun, Jan 18
American Airlines Logo
7:07 am - 6:20 pm
SJU
-
ONT
15h 13m2 stops
American Airlines Logo
11:59 pm - 3:59 pm
ONT
-
SJU
12h 00m2 stops
$424American Airlines
Thu, Feb 5 - Sun, Feb 8
United Airlines Logo
3:46 pm - 9:58 pm
SJU
-
ONT
10h 12m1 stop
United Airlines Logo
1:53 pm - 6:11 am
ONT
-
SJU
12h 18m2 stops
$430United Airlines
Wed, Jan 14 - Fri, Jan 23
United Airlines Logo
7:45 am - 8:58 pm
SJU
-
ONT
17h 13m2 stops
United Airlines Logo
6:00 am - 9:26 pm
ONT
-
SJU
11h 26m1 stop
$431United Airlines
Thu, May 28 - Mon, Jun 22
JetBlue Logo
1:50 pm - 10:09 pm
SJU
-
ONT
11h 19m1 stop
JetBlue Logo
11:25 pm - 12:49 pm
ONT
-
SJU
10h 24m1 stop
$434JetBlue
Booking Insights

KAYAK's insights & trends for flights to Ontario

Get data-powered insights and trends for flights to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Ontario is July, where tickets cost $333 on average for one-way flights. On the other hand, the most expensive months are April and December, where the average cost of tickets from Puerto Rico is $590 and $587 respectively. For return trips, the best month to travel is July with an average price of $333.

Good to know

Low seasonMarch
Cheapest flight$130
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from San Juan to Ontario

FAQs - booking Ontario flights

  • How far is Ontario Airport from central Ontario?

    Ontario Airport is 3 miles from the center of Ontario.

  • What is the name of Ontario’s airport?

    There is only 1 airport in Ontario, called Ontario Airport (ONT). It can also be referred to as Ontario or Ontario Intl.

  • How does KAYAK find such low prices on flights to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to Ontario are there each week?

    Each week there are around 481 direct flights from within Puerto Rico to Ontario. The most common day for departures is Sunday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to Ontario

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Ontario flight deals.

Reviews of the top airlines flying from Puerto Rico to Ontario

 
See real verified KAYAK customer reviews for airlines flying to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Puerto Rico to Ontario. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9124 reviews
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
7.7Boarding
Airline reviews

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

2.0 MediocreGray, Dec 2025
IAH - SMF
Read more United Airlines reviews

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Flight was late - I was downgraded from first class to coach

Movie selection is good. Crew did not understand mileage program and were no help. Sick later. Food?

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

The flight attendants were very rude, beyond comprehension. I took a business class from London to SFO for the first time on United. When I asked for a second piece of bread during dinner, the serving attendant threw a 3rd bread on my plate and said, “here. You can have this one too”! I couldn’t believe the rudeness of the attendant. Most all attendants were very rude, unhelpful, sing the food was absolutely disgusting. Never fly United internationally in business class. My flight back to SFO was a nightmare!!

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Flight from Rome to SFO was excellent compared To our flight to Europe from SFO. The food was much tastier. You can see how UNITED is skimping, though. Instead of getting something mid flight you had to ask for it. It was not automatically served. There was a cookie at the end of the arrival meal, for example that tasted like it just came out of a box. They used to serve a little container of nuts, now … a tiny container of nuts, mixed with pretzels. This was business class that you really have to pay for! But this is minor complaints compared to the overall. My major complaint is the position of the even numbered seats by the windows. You have to turn around to see your window & the positioning as some other controls are harder to get at. This is compared to the odd number seat that are perfectly aligned.

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

We are too tired and frustrated to comment politely at this point

The business class seats are dated and uncomfortable. The space is bare minimum and there is absolutely no privacy. For $4K, this is not what I expect.

The flight crew was rude. We were in first class and no one even offered water until an hour after we were in the air. Horrible experience

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Did not get the seat I selected and paid for.

Everything you need to know for your flight to Ontario

Information on the airport you'll fly into in Ontario