Find flights
Insights
When to book
FAQs & Tips
Direct Flights
Airlines
Deals

$139 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 6/6. 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
0 bags
Fri 6/28
Fri 7/5

Search 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
In the last 7 days travelers have searched 42,816,550 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Flights to Ontario - Travel Insights & Trends

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 day to fly to Ontario?

The average price of all flights to Ontario clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to Ontario is Tuesday where tickets can be as cheap as $397. On the other hand, the most expensive day to fly is Sunday, where prices are $839 on average.

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 September, where tickets cost $346 on average for one-way flights. On the other hand, the most expensive months are December and June, where the average cost of tickets from Puerto Rico is $766 and $705 respectively. For return trips, the best month to travel is September with an average price of $346.

What is the cheapest time of day to fly to Ontario?

The average price for all flights to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Ontario is generally in the afternoon, when flights cost $482 on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is $577.

How long is the flight to Ontario?

The duration of your flight to Ontario depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to Ontario on KAYAK are from San Juan, which takes 10h 40m, Aguadilla, which takes 10h 50m, Ponce, which takes 14h 47m, and Culebra, which takes 25h 59m.

How many direct flights to Ontario are there each day?

There are around 93 direct flights from within Puerto Rico to Ontario every day. Most flights depart in the morning, with 11:00 am the most common departure time and 39% of flights departing in the morning.

How many direct flights to Ontario are there each week?

Each week there are around 649 direct flights from within Puerto Rico to Ontario. The most common day for departures is Thursday, with 16% of flights taking off on this day.

Good to know

Low season

January

High season

December

Cheapest flight

$139
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 46% increase in price.
Flight from San Juan to Ontario

FAQs - booking Ontario flights

  • How far is Ontario from central Ontario?

    Ontario 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 (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.

  • Which airline offers the most flights to Ontario?

    Of the 8 airlines that fly to Ontario, Southwest offers the most flights, with around 222 per week, followed by Frontier with 95 flights per week.

See more FAQs

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.

Prefer to fly non-stop to Ontario?

Find which airlines fly direct to Ontario, which days they fly and book direct flights.

Nonstop departures

Puerto Rico to Ontario

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights

Nonstop returns

Ontario to Puerto Rico

Monday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Tuesday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Wednesday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Thursday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

Friday

Aeromexico, Air Canada, Air France, +22 more

Aeromexico, Air Canada, +23 more

Saturday

Aeromexico, Air Canada, Air France, +23 more

Aeromexico, Air Canada, +24 more

Sunday

Aeromexico, Air Canada, Air France, +24 more

Aeromexico, Air Canada, +25 more

See more direct flights
See more direct flights

Top 4 airlines serving 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.
8.0
DeltaOverall score based on 10476 reviews
7.4Food
8.6Crew
8.0Entertainment
8.2Boarding
7.9Comfort
Airline reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

8.0 ExcellentLiam, May 2024SLC - SJC
Read more about Delta reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

I was sitting at comfort +. One of the Asian male crew was so loud when he delivered service. When he asked questions or what food you need, he was shouting. He must be a prison guard before going Delta.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

I really do not like the basic in basic economy.

Marked by flight delays on all segments of the trip. Food in first class cabin was mediocre and overhead cabin storage was not adequate. Overall, the premium charge for first class cabin was poor and over hyped. This will be our last flight with UA.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

My bag was lost with my medicine and I am very inconvenienced. I don’t know what happened, however I want you to do a better job on getting people’s bag back

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Somehow I got “offloaded” even though I had my boarding pass and was in transit Food is horrible Staff were nice and cheerful No headphones were provided on 11 hours flight

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

The staff were very helpful with lots of refreshments on offer. The toilets were clean. The seats were comfortable and entertainment was good. No complaints, it was excellent.

amazing! they were so kind and allowed us to sit on empty seats so we could stretch our legs and sleep good. Food is amazing as well plus dessert in the middle of the flight!

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

The boarding time. I was in Section 1 the lady in charge just let people in section 3 without see us. Make a line , I have to step out and ask her. We were in the line and she just take my ticket and that’s it, so if I don’t ask her she could leave us at the end! We paid more for that privilege and. She doesn’t care….

See my previous comment which is mostly about our flight from Phoenix to SFO

Pro: The stuff was great. Friendly, patient and caring. Our seat row was clean. The bath room was clean. Our flights were close to on time. Con: The leg room is too small. No blankets or pillows. No entertainment devices at all. I can’t remember to have a food choice. I would fly again with frontier for short distances.

The check in at the airport was awful. Told I need to pay for a bag. The item was taken at screening. I went back to get my $ back and they gave me a coupon with a QR code that doesn’t work. Worst costumer service ever!!!!!

4 hour delay because they used our aircraft to fly a different segment (per the captain)

Lost baggage on my connecting flight. 24 hours later, still no update on my bags.

I had to cancel within 1hour of the reservation an they put you through hell to . no live customer service desk. I'm handy caped and they make it almost impossible to cancel. They are steeling my money. You should not have that airline on your site. Contact me and I will give you all info. Of what the are doing to me just notable treatment they are set up like that to take people

absolutely horrific. delayed flights, overbooking. over charging. nightmare service beyond words. stay away.

Book cheap flights from Puerto Rico to Ontario

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Ontario found on KAYAK in the last 72 hours.
7/25Thu
2 stopsFrontier
17h 08mSJU-ONT
8/2Fri
2 stopsFrontier
11h 44mONT-SJU
$290
7/3Wed
2 stopsFrontier
23h 45mSJU-ONT
7/8Mon
2 stopsFrontier
11h 14mONT-SJU
$313
10/16Wed
1 stopDelta
12h 34mSJU-ONT
10/21Mon
2 stopsDelta
15h 21mONT-SJU
$334
10/1Tue
1 stopUnited Airlines
9h 51mSJU-ONT
10/6Sun
1 stopUnited Airlines
11h 35mONT-SJU
$393
10/16Wed
2 stopsDelta
12h 26mSJU-ONT
10/21Mon
2 stopsDelta
15h 21mONT-SJU
$423
10/22Tue
2 stopsUnited Airlines
13h 17mSJU-ONT
11/5Tue
2 stopsUnited Airlines
11h 26mONT-SJU
$441
8/17Sat
2 stopsAmerican Airlines
22h 15mSJU-ONT
8/23Fri
2 stopsAmerican Airlines
17h 30mONT-SJU
$456
10/1Tue
1 stopJetBlue
11h 50mSJU-ONT
10/6Sun
1 stopJetBlue
12h 22mONT-SJU
$492
9/1Sun
2 stopsAmerican Airlines
11h 52mSJU-ONT
9/8Sun
1 stopAmerican Airlines
11h 50mONT-SJU
$620
9/1Sun
1 stopJetBlue
13h 07mSJU-ONT
9/8Sun
1 stopJetBlue
12h 22mONT-SJU
$628

Search by stops

Search by airline

Search by price

Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Ontario found on KAYAK in the last 72 hours.
6/6Thu
2 stopsFrontier
17h 16mSJU-ONT
$139
6/20Thu
2 stopsFrontier
17h 16mSJU-ONT
$145
6/19Wed
2 stopsDelta
20h 32mSJU-ONT
$196
10/1Tue
2 stopsUnited Airlines
13h 17mSJU-ONT
$197
6/12Wed
2 stopsDelta
20h 32mSJU-ONT
$243
6/15Sat
1 stopJetBlue
12h 13mSJU-ONT
$246
6/6Thu
1 stopAmerican Airlines
17h 59mSJU-ONT
$278
6/4Tue
1 stopJetBlue
12h 18mSJU-ONT
$296
6/14Fri
1 stopUnited Airlines
10h 08mSJU-ONT
$302
6/13Thu
1 stopAmerican Airlines
17h 59mSJU-ONT
$325

Search by stops

Search by airline

Search by price

Last minute flights to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Ontario that are departing in the next 10 days.
5/31Fri
multi-stopUnited Airlines
10h 08mSJU-ONT
6/2Sun
multi-stopUnited Airlines
12h 23mONT-SJU
$764
5/31Fri
multi-stopUnited Airlines
13h 28mSJU-ONT
6/2Sun
multi-stopUnited Airlines
12h 23mONT-SJU
$814
5/30Thu
multi-stopJetBlue
14h 32mSJU-ONT
6/6Thu
multi-stopJetBlue
11h 11mONT-SJU
$971
5/30Thu
multi-stopAlaska Airlines
21h 29mSJU-ONT
6/2Sun
multi-stopAlaska Airlines
19h 04mONT-SJU
$4,182

Search by stops

Search by airline

Search by price

Flights to Ontario

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Puerto Rico

Cabin classes: