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SJU - ONT

Find cheap flights from San Juan to Ontario from $129

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Juan to Ontario departing on 5/20. 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
Sat 6/8
Sat 6/15

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Juan to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

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Cheap flight deals from San Juan to Ontario (SJU-ONT)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Juan 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 and deals for you by selecting your travel dates.
Choose your dates
4:07 pm - 11:57 pmSJU-ONT
34h 50m2 stops
12:59 am - 3:01 pmONT-SJU
11h 02m2 stops
$305Frontier
Find Deal
Fri, Jun 7 - Thu, Jun 13
3:57 pm - 10:59 amSJU-ONT
22h 02m2 stops
10:12 am - 4:50 amONT-SJU
15h 38m1 stop
$322Frontier
Find Deal
Wed, Jun 19 - Sun, Jun 23
1:00 pm - 10:27 pmSJU-ONT
12h 27m1 stop
11:49 pm - 3:00 pmONT-SJU
12h 11m1 stop
$438JetBlue
Find Deal
Wed, Sep 18 - Mon, Sep 23
8:25 pm - 1:48 pmSJU-ONT
20h 23m2 stops
7:21 pm - 6:40 pmONT-SJU
20h 19m2 stops
$520American Airlines
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Mon, Jul 1 - Sat, Jul 6
10:37 am - 10:09 pmSJU-ONT
14h 32m1 stop
11:59 pm - 4:03 pmONT-SJU
13h 04m1 stop
$536JetBlue
Find Deal
Thu, May 30 - Wed, Jun 19
6:15 am - 11:59 pmSJU-ONT
20h 44m2 stops
7:26 pm - 10:30 pmONT-SJU
24h 04m2 stops
$601American Airlines
Find Deal
Wed, Jun 19 - Sun, Jun 23
2:55 pm - 9:11 pmSJU-ONT
9h 16m1 stop
5:20 am - 5:30 pmONT-SJU
9h 10m1 stop
$617United Airlines
Find Deal
Thu, Jul 11 - Wed, Jul 17
1:40 pm - 8:48 pmSJU-ONT
10h 08m1 stop
5:20 am - 5:30 pmONT-SJU
9h 10m1 stop
$622United Airlines
Find Deal
Thu, Jul 11 - Tue, Jul 16
7:32 am - 10:15 pmSJU-ONT
17h 43m2 stops
8:49 pm - 12:22 amONT-SJU
24h 33m2 stops
$774Alaska Airlines
Find Deal
Wed, Sep 18 - Mon, Sep 23
12:45 am - 9:55 pmSJU-ONT
24h 10m2 stops
6:00 am - 12:15 amONT-SJU
15h 15m2 stops
$1,251Alaska Airlines
Find Deal
Wed, May 29 - Wed, Jun 19

Flights from San Juan to Ontario - Travel Insights & Trends

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

What’s the cheapest day of the week to fly from San Juan to Ontario?

The average price of all flights from San Juan Luis Munoz Marin Intl Airport to Ontario clicked on KAYAK for each day over the last 12 months.
When flying from San Juan to Ontario, you should consider leaving on a Monday and avoid Sundays if you are looking for the best rates. For your return to San Juan, you’ll find the best rates on Sundays and the most expensive ones on Fridays.

What is the cheapest month to fly from San Juan Luis Munoz Marin Intl Airport to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Juan Luis Munoz Marin Intl Airport 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 from San Juan Luis Munoz Marin Intl Airport to Ontario is September, where tickets cost $346 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $766 and $705 respectively.

Which airlines provide the cheapest flights from San Juan to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Ontario from San Juan were found on Frontier ($129) and JetBlue ($151), and the lowest round-trip tickets were found on Frontier ($305) and JetBlue ($438).

Good to know

Low season

January

High season

December

Cheapest flight

$129
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

When to book flights from San Juan to Ontario

Are your dates flexible? Find out the best times to travel from San Juan to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking San Juan to Ontario flights

  • What is the cheapest flight from San Juan Luis Munoz Marin Intl Airport to Ontario?

    In the last 3 days, the lowest price for a flight from San Juan Luis Munoz Marin Intl Airport to Ontario was $129 for a one-way ticket and $305 for a round-trip.

  • Do I need a passport to fly between San Juan and Ontario?

    Yes, you’ll need a passport to travel to Ontario from San Juan.

  • Which airports will I be using when flying from San Juan to Ontario?

    On your way to Ontario, you’ll fly out from San Juan Luis Munoz Marin Intl. You’ll be landing at Ontario.

  • Which aircraft models fly most regularly from San Juan to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Juan to Ontario?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between San Juan and Ontario, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from San Juan to Ontario, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Juan to Ontario are Delta and United Airlines. With an average price for the route of $647 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $570 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San Juan 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 from San Juan to Ontario.

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

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

  • What is the Hacker Fare option on flights from San Juan 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 to San Juan with another airline. Booking your flights between San Juan and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Juan 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 from San Juan up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 airlines serving from San Juan to Ontario

 
See real verified KAYAK customer reviews for airlines flying from San Juan to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Juan 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 10789 reviews
8.2Boarding
7.9Comfort
7.4Food
8.0Entertainment
8.6Crew
Airline reviews

The flight was excellent, I recommend people to fly with Delta

10.0 ExcellentLionel, May 2024SJU - JFK
Read more about Delta reviews

The flight was excellent, I recommend people to fly with Delta

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.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Space and comfort was good. Staff could have been more helpful and friendly.

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.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

So so. Terrible aircraft choice for that leg of the flight.

Our seat tv didn’t work All the rest was perfect

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!

Seats in coach aren't padded enough for a 6 hour flight

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.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

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 San Juan to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Juan to Ontario found on KAYAK in the last 72 hours.
5/20Mon
1 stopFrontier
16h 26mSJU-ONT
$129
6/27Thu
2 stopsFrontier
17h 16mSJU-ONT
$145
6/20Thu
1 stopJetBlue
13h 08mSJU-ONT
$151
6/7Fri
1 stopAmerican Airlines
19h 54mSJU-ONT
$155
8/20Tue
1 stopDelta
13h 50mSJU-ONT
$167
8/21Wed
2 stopsAmerican Airlines
19h 21mSJU-ONT
$211
11/2Sat
1 stopUnited Airlines
9h 47mSJU-ONT
$245
6/19Wed
1 stopJetBlue
14h 19mSJU-ONT
$246
6/29Sat
1 stopDelta
13h 08mSJU-ONT
$271
10/31Thu
2 stopsUnited Airlines
17h 41mSJU-ONT
$311

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Last minute flights from San Juan 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 from San Juan to Ontario that are departing in the next 10 days.
5/11Sat
multi-stopJetBlue
14h 32mSJU-ONT
5/14Tue
multi-stopJetBlue
13h 15mONT-SJU
$659
5/11Sat
multi-stopDelta
17h 09mSJU-ONT
5/14Tue
multi-stopDelta
12h 56mONT-SJU
$681
5/14Tue
multi-stopAmerican Airlines
13h 59mSJU-ONT
5/16Thu
multi-stopAmerican Airlines
12h 14mONT-SJU
$693
5/13Mon
multi-stopAmerican Airlines
14h 07mSJU-ONT
5/16Thu
multi-stopAmerican Airlines
13h 45mONT-SJU
$695
5/14Tue
multi-stopAmerican Airlines
11h 54mSJU-ONT
5/16Thu
multi-stopAmerican Airlines
14h 05mONT-SJU
$723
5/13Mon
multi-stopAmerican Airlines
14h 02mSJU-ONT
5/16Thu
multi-stopAmerican Airlines
14h 05mONT-SJU
$725
5/14Tue
multi-stopUnited Airlines
12h 24mSJU-ONT
5/17Fri
multi-stopUnited Airlines
9h 15mONT-SJU
$771
5/14Tue
multi-stopUnited Airlines
12h 24mSJU-ONT
5/17Fri
multi-stopUnited Airlines
12h 54mONT-SJU
$802
5/13Mon
multi-stopAlaska Airlines
18h 20mSJU-ONT
5/17Fri
multi-stopAlaska Airlines
14h 54mONT-SJU
$1,680
5/12Sun
multi-stopAlaska Airlines
19h 53mSJU-ONT
5/16Thu
multi-stopAlaska Airlines
19h 04mONT-SJU
$1,881

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San Juan - Ontario Flights

Departure:

San Juan (undefined)Puerto Rico

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - San Juan

Cabin classes:

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