$113 Find Cheap Flights from Ontario to Caribbean

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Caribbean departing on 1/7. 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

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Cheap Flights from Ontario to Caribbean

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Punta Cana
Punta Cana1 stop$463
Santo Domingo
Santo Domingo2 stops$410
Montego Bay
Montego Bay2 stops$419
Oranjestad
Oranjestad1 stop$676
Nassau
Nassau2 stops$397
Kingston
Kingston1 stop$625
Simpson Bay
Simpson Bay2 stops$428
Providenciales
Providenciales2 stops$829
Port of Spain
Port of Spain2 stops$643
Bridgetown
Bridgetown2 stops$703
George Town
George Town2 stops$579
Willemstad
Willemstad1 stop$749
St. John's
St. John's2 stops$746
Aguadilla
Aguadilla2 stops$523
Punta Cana
Punta Cana1 stop$463
Santo Domingo
Santo Domingo2 stops$410
Montego Bay
Montego Bay2 stops$419
Oranjestad
Oranjestad1 stop$676
Nassau
Nassau2 stops$397
Kingston
Kingston1 stop$625
Simpson Bay
Simpson Bay2 stops$428
Providenciales
Providenciales2 stops$829
Port of Spain
Port of Spain2 stops$643
Bridgetown
Bridgetown2 stops$703
George Town
George Town2 stops$579
Willemstad
Willemstad1 stop$749
St. John's
St. John's2 stops$746
Aguadilla
Aguadilla2 stops$523

Book Cheap Ontario to Caribbean Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Caribbean 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 Ontario to Caribbean

Sun, Jan 18 - Thu, Jan 22
United Airlines Logo
5:05 am - 6:25 pm
ONT
-
SJU
9h 20m1 stop
United Airlines Logo
3:46 pm - 9:58 pm
SJU
-
ONT
10h 12m1 stop
$283United Airlines
Wed, Jan 7 - Sat, Jan 17
Multiple Airlines Logo
7:00 am - 6:34 am
ONT
-
SJU
19h 34m2 stops
Multiple Airlines Logo
7:44 pm - 1:48 pm
SJU
-
ONT
22h 04m1 stop
$300Multiple Airlines
Fri, Jan 9 - Mon, Jan 12
Frontier Logo
8:31 am - 6:34 am
ONT
-
SJU
18h 03m1 stop
Frontier Logo
7:05 pm - 10:59 pm
SJU
-
ONT
31h 54m2 stops
$302Frontier
Sun, Jan 18 - Wed, Jan 21
American Airlines Logo
11:59 pm - 3:04 pm
ONT
-
SJU
11h 05m1 stop
American Airlines Logo
6:00 am - 2:18 pm
SJU
-
ONT
12h 18m2 stops
$308American Airlines
Thu, Apr 30 - Fri, May 8
JetBlue Logo
11:25 pm - 12:49 pm
ONT
-
SJU
10h 24m1 stop
JetBlue Logo
1:50 pm - 10:09 pm
SJU
-
ONT
11h 19m1 stop
$337JetBlue
Mon, May 11 - Thu, May 14
JetBlue Logo
11:25 pm - 1:47 pm
ONT
-
SJU
11h 22m1 stop
JetBlue Logo
1:50 pm - 10:09 pm
SJU
-
ONT
11h 19m1 stop
$342JetBlue
Wed, Dec 24 - Mon, Dec 29
Frontier Logo
4:22 pm - 6:34 am
ONT
-
SJU
10h 12m1 stop
Frontier Logo
7:06 pm - 7:24 am
SJU
-
ONT
16h 18m1 stop
$344Frontier
Wed, Feb 4 - Sun, Feb 8
American Airlines Logo
3:09 pm - 1:52 pm
ONT
-
NAS
19h 43m2 stops
American Airlines Logo
6:45 pm - 9:08 am
NAS
-
ONT
17h 23m2 stops
$402American Airlines
Sun, Feb 15 - Wed, Feb 18
Delta Logo
10:20 pm - 3:04 pm
ONT
-
STT
12h 44m1 stop
Delta Logo
3:10 pm - 9:05 pm
STT
-
ONT
9h 55m1 stop
$647Delta
Wed, Apr 29 - Wed, May 6
Delta Logo
10:59 pm - 12:14 pm
ONT
-
AUA
10h 15m1 stop
Delta Logo
1:25 pm - 10:09 pm
AUA
-
ONT
11h 44m1 stop
$676Delta
Booking Insights

KAYAK's insights & trends for Ontario to Caribbean flights

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

What is the cheapest month to fly from Ontario to Caribbean?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Caribbean, 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 Ontario to Caribbean is October, when tickets cost $391 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $680 and $661 respectively.

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

The average price of all round-trip flights from Ontario to Caribbean clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Caribbean on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Ontario to Caribbean. For your return ticket, we recommend flying on a Wednesday and avoiding Mondays for the best deals.

How far in advance should I book a flight from Ontario to Caribbean?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Caribbean, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Caribbean, you should book around 3 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$113
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Ontario to San Juan

FAQs - booking Caribbean flights

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

    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 Ontario to Caribbean.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Caribbean 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 Ontario to Caribbean?

    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 from Ontario to Caribbean 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 from Ontario to Caribbean?

    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 from Ontario to Caribbean up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Caribbean?

    The cheapest time of day to fly to Caribbean is generally at night, when round-trip flights cost $532 on average. Morning departures are around 20% cheaper than evening flights, on average. The most expensive time of day to fly to Caribbean is generally in the evening, which is peak travel time and where the average cost of a ticket is $735.

Reviews of the top 5 airlines serving from Ontario to Caribbean

 
Need help choosing which airline to fly with from Ontario to Caribbean? 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.
7.9
SouthwestOverall score based on 4252 reviews
7.0Food
8.1Boarding
8.6Crew
7.5Entertainment
8.0Comfort
Airline reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

8.0 ExcellentRussell, Dec 2025
SAN - OAK
Read more Southwest reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

This was an older airplane. The cabin was constantly warm to hot throughout the 10 hour flight and there were no vents to personalize air flow. Also since it was an older plane, the material and comfort of the chairs were very uncomfortable. I left my flight with major soreness on my tailbone.

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

Premium Plus is a really good idea for longer flights

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

The flight was flawless and we even arrived between 20 and 25 minutes early!

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

Not clean and was told I would get a great seat and it was not great at all

Flight got delayed for 5 hours no good explanation was offered ;(

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Better than expected. Staff were friendly and nice on both flights.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

Everything you need to know for your flight to Caribbean

Information on your arrival and departure airports