Caribbean

$152+ Cheap flights from Ontario (ONT) to Caribbean

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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
May 2 — May 91
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Cheap flight deals from Ontario to Caribbean

Cheapest flights from Ontario to Caribbean
Explore the most affordable flight options available from Ontario to Caribbean. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:15 am
ONT
-
SJU
1 stop11h 55m
Multiple Airlines
Tue 5/56:30 am
SJU
-
ONT
2 stops30h 35m
Multiple Airlines
Deal found 3/29$346
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:15 am
ONT
-
SJU
1 stop11h 55m
Multiple Airlines
Sun 5/33:31 pm
SJU
-
ONT
2 stops45h 34m
Multiple Airlines
Deal found 3/29$353
This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1811:59 pm
ONT
-
SJU
1 stop12h 03m
American Airlines
Mon 9/217:05 pm
SJU
-
ONT
2 stops19h 43m
American Airlines
Deal found 3/31$354
This Priceline deal was found by Cheapflights users on 3/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:50 am
ONT
-
MBJ
2 stops23h 21m
Frontier
Tue 5/121:16 pm
MBJ
-
ONT
2 stops20h 19m
Frontier
Deal found 3/30$355
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:15 am
ONT
-
SJU
1 stop11h 55m
Multiple Airlines
Sat 4/181:59 am
SJU
-
ONT
2 stops32h 32m
Multiple Airlines
Deal found 3/31$357
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:15 am
ONT
-
SJU
1 stop11h 55m
Multiple Airlines
Mon 4/2711:30 am
SJU
-
ONT
2 stops39h 25m
Multiple Airlines
Deal found 3/30$359
This United Airlines deal was found by Cheapflights users on 3/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/217:00 am
ONT
-
SJU
1 stop10h 34m
United Airlines
Tue 5/52:55 pm
SJU
-
ONT
1 stop10h 03m
United Airlines
Deal found 3/29$367
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:59 am
ONT
-
SJU
2 stops29h 55m
Multiple Airlines
Tue 4/212:00 pm
SJU
-
ONT
1 stop33h 39m
Multiple Airlines
Deal found 3/28$370
This Priceline deal was found by Cheapflights users on 3/31. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/108:06 pm
ONT
-
MBJ
2 stops14h 05m
Frontier
Fri 5/151:16 pm
MBJ
-
ONT
2 stops22h 49m
Frontier
Deal found 3/31$375
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Sat 5/27:00 am
ONT
-
SJU
1 stop10h 34m
United Airlines
Mon 5/111:00 am
SJU
-
ONT
2 stops14h 38m
United Airlines
Deal found 3/30$376
This Priceline deal was found by Cheapflights users on 3/31. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:20 pm
ONT
-
MBJ
2 stops13h 52m
Frontier
Tue 5/51:16 pm
MBJ
-
ONT
2 stops22h 49m
Frontier
Deal found 3/31$378
This Priceline deal was found by Cheapflights users on 3/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/148:06 pm
ONT
-
MBJ
2 stops38h 05m
Frontier
Thu 5/211:16 pm
MBJ
-
ONT
2 stops46h 49m
Frontier
Deal found 3/30$386

Find flight deals from Ontario to Caribbean

Keep the following information in mind while searching for Ontario to Caribbean flight deals. Data was last updated April 2, 2026.

Round-trip from

$346
(Kiwi.com)

One-way from

$152
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$399
From Ontario to Caribbean
One-way flight from Ontario to Caribbean
Highest demand for flights based on searches. 8% potential increase in price ($40 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in April 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Caribbean 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 April 2, 2026.
Use the filters below to find and compare flights from Ontario to Caribbean that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 4/21

7:00 am-8:34 pm

1 stop10h 34m

San Juan Luis Munoz Marin Intl

Tue 5/5

2:55 pm-9:58 pm

1 stop10h 03m

$367

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 8/5

10:00 pm-1:32 pm

1 stop12h 32m

San Juan Luis Munoz Marin Intl

Wed 9/2

1:06 pm-9:56 pm

1 stop11h 50m

$434

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Mon 5/4

5:33 pm-12:11 pm

2 stops16h 38m

Montego Bay Sangster Intl

Mon 5/11

1:16 pm-7:35 am

2 stops20h 19m

$435

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 5/4

6:59 pm-1:45 pm

2 stops15h 46m

San Juan Luis Munoz Marin Intl

Tue 5/5

1:00 am-12:38 pm

2 stops14h 38m

$439

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 4/14

7:05 am-8:24 pm

1 stop10h 19m

San Juan Luis Munoz Marin Intl

Tue 4/21

12:55 pm-9:00 pm

1 stop11h 05m

$452

OntarioSanto Domingo

ONT - SDQ

ONTSDQ

Ontario

Mon 9/28

10:56 pm-1:24 pm

1 stop11h 28m

Santo Domingo Las Americas

Wed 9/30

12:47 pm-9:29 pm

1 stop11h 42m

$477

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 5/2

6:00 am-8:38 pm

1 stop11h 38m

San Juan Luis Munoz Marin Intl

Tue 5/5

7:00 am-5:52 pm

2 stops13h 52m

$478

OntarioSanto Domingo

ONT - SDQ

ONTSDQ

Ontario

Tue 4/28

6:05 am-10:46 pm

2 stops13h 41m

Santo Domingo Las Americas

Tue 5/5

6:00 am-8:36 pm

2 stops17h 36m

$481

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 8/4

6:50 am-10:00 pm

2 stops12h 10m

San Juan Luis Munoz Marin Intl

Mon 8/10

5:00 am-3:15 pm

2 stops13h 15m

$492

OntarioSimpson Bay

ONT - SXM

ONTSXM

Ontario

Mon 8/31

11:50 pm-1:42 pm

1 stop10h 52m

Simpson Bay Princess Juliana

Fri 9/4

11:20 am-10:35 pm

1 stop14h 15m

$501

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Caribbean

Have a flexible travel schedule? Discover the best time to fly to Caribbean from Ontario 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 Ontario to Caribbean

What is the cheapest month to book a flight from Ontario to Caribbean?

Currently, April is the cheapest month in which you can book a flight from Ontario to Caribbean (average of $141). Flying from Ontario to Caribbean in November is currently the most expensive (average of $286). 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.

Reviews of airlines servicing Caribbean

Get insights into the airlines that provide service to Caribbean. 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 Caribbean. Reviews last updated April 2, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Ontario to Caribbean. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Caribbean. 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 from for flights from Ontario to Caribbean?

    If you book a flight to Caribbean from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ontario to Caribbean?

    Departing from Ontario to Caribbean will take you 10h 34m. Ontario and Caribbean are separated by a distance of 3334 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Ontario to Caribbean one-way?

    The cheapest airlines for a one-way flight from Ontario to Caribbean are United Airlines ($142), Southwest ($178), and American Airlines ($195).

  • What are the most popular routes from Ontario to Caribbean?

  • Can I find deals for flights from Ontario to Caribbean that include hotel bookings?

    Yes. In addition to deals on Ontario to Caribbean flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Caribbean?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Caribbean.

  • Can I find deals for business class flights from Ontario to Caribbean?

    Yes. Cheapflights offers flight deals from Ontario to Caribbean 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 Ontario to Caribbean?

    Currently, April is the cheapest month in which you can book a flight from Ontario to Caribbean (average of $141). Flying from Ontario to Caribbean in November is currently the most expensive (average of $286). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Caribbean

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Ontario to Caribbean

Discover the top 6 airlines that operate flights from Ontario to Caribbean. 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 April 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$137Average$467FlexibilityNo cancel feeOn-time62%
DeltaCheapest$292Average$826FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$321Average$624FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$360Average$656FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$421Average$607FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$445Average$621FlexibilityNo cancel feeOn-time63%

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