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$133+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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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 January 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
Thu 2/196:05 am
ONT
-
SJU
2 stops15h 19m
Multiple Airlines
Thu 2/267:44 pm
SJU
-
ONT
1 stop29h 04m
Multiple Airlines
Deal found 1/20$284
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Thu 2/195:00 am
ONT
-
SJU
2 stops13h 22m
United Airlines
Thu 2/267:40 am
SJU
-
ONT
2 stops14h 01m
United Airlines
Deal found 1/20$336
This United Airlines deal was found by Cheapflights users on 1/18. 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.
Mon 4/206:05 am
ONT
-
SJU
1 stop11h 33m
United Airlines
Tue 4/287:20 am
SJU
-
ONT
2 stops16h 16m
United Airlines
Deal found 1/18$338
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 2/232:06 pm
ONT
-
SJU
1 stop17h 31m
Multiple Airlines
Mon 3/99:58 pm
SJU
-
ONT
2 stops29h 01m
Multiple Airlines
Deal found 1/20$354
This Trip.com deal was found by Cheapflights users on 1/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/148:21 am
ONT
-
SJU
1 stop23h 16m
Multiple Airlines
Sat 2/217:44 pm
SJU
-
ONT
1 stop22h 45m
Multiple Airlines
Deal found 1/18$356
This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
Thu 4/27:40 pm
ONT
-
SJU
1 stop12h 27m
Multiple Airlines
Mon 4/66:07 pm
SJU
-
ONT
2 stops49h 16m
Multiple Airlines
Deal found 1/20$363
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Sun 2/2211:58 pm
ONT
-
SXM
2 stops12h 30m
American Airlines
Thu 2/263:17 pm
SXM
-
ONT
2 stops21h 32m
American Airlines
Deal found 1/21$364
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Thu 5/75:00 am
ONT
-
SJU
1 stop9h 38m
United Airlines
Fri 5/151:00 am
SJU
-
ONT
2 stops14h 38m
United Airlines
Deal found 1/20$364
This JetBlue deal was found by Cheapflights users on 1/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2511:25 pm
ONT
-
SJU
1 stop11h 22m
JetBlue
Fri 5/291:50 pm
SJU
-
ONT
1 stop11h 19m
JetBlue
Deal found 1/20$369
This American Airlines deal was found by Cheapflights users on 1/19. 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.
Mon 3/211:59 pm
ONT
-
SJU
1 stop12h 53m
American Airlines
Fri 3/62:44 pm
SJU
-
ONT
1 stop10h 40m
American Airlines
Deal found 1/19$372
This United Airlines deal was found by Cheapflights users on 1/20. 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 2/216:00 am
ONT
-
SJU
1 stop11h 26m
United Airlines
Wed 2/252:25 pm
SJU
-
ONT
1 stop10h 25m
United Airlines
Deal found 1/20$374
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 2/258:40 am
ONT
-
SJU
2 stops21h 14m
Multiple Airlines
Mon 3/96:49 pm
SJU
-
ONT
1 stop23h 16m
Multiple Airlines
Deal found 1/20$376

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 January 21, 2026.

Round-trip from

$284
(Kiwi.com)

One-way from

$133
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$485
From Ontario to Caribbean
Search Deals
One-way flight from Ontario to Caribbean
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 21, 2026.
Use the filters below to find and compare flights from Ontario to Caribbean that are best for you.

Fly from

Ontario

Fly to

Caribbean

Route

Depart

Return

Price

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 2/19

5:00 am-10:22 pm

2 stops13h 22m

San Juan Luis Munoz Marin Intl

Thu 2/26

7:40 am-5:41 pm

2 stops14h 01m

$336

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 4/20

6:05 am-8:38 pm

1 stop11h 33m

San Juan Luis Munoz Marin Intl

Tue 4/28

7:20 am-8:36 pm

2 stops16h 16m

$338

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 4/2

7:40 pm-11:07 am

1 stop12h 27m

San Juan Luis Munoz Marin Intl

Mon 4/6

6:07 pm-4:23 pm

2 stops49h 16m

$363

OntarioSimpson Bay

ONT - SXM

ONTSXM

Ontario

Sun 2/22

11:58 pm-4:28 pm

2 stops12h 30m

Simpson Bay Princess Juliana

Thu 2/26

3:17 pm-8:49 am

2 stops21h 32m

$364

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 2/21

6:00 am-9:26 pm

1 stop11h 26m

San Juan Luis Munoz Marin Intl

Wed 2/25

2:05 am-5:41 pm

3 stops19h 36m

$394

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 3/1

6:00 am-9:26 pm

1 stop11h 26m

San Juan Luis Munoz Marin Intl

Wed 3/4

3:46 pm-9:59 pm

1 stop10h 13m

$394

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 2/21

6:00 am-9:26 pm

1 stop11h 26m

San Juan Luis Munoz Marin Intl

Wed 3/4

2:25 pm-8:50 pm

1 stop10h 25m

$394

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 2/21

6:00 am-9:26 pm

1 stop11h 26m

San Juan Luis Munoz Marin Intl

Wed 2/25

2:25 pm-8:50 pm

1 stop10h 25m

$394

OntarioNassau

ONT - NAS

ONTNAS

Ontario

Tue 3/3

1:45 pm-11:53 am

2 stops19h 08m

Nassau Intl

Sat 3/7

1:05 pm-10:51 pm

2 stops12h 46m

$398

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 2/3

4:45 pm-12:30 pm

2 stops15h 45m

San Juan Luis Munoz Marin Intl

Sat 2/7

6:05 am-6:20 pm

2 stops16h 15m

$400

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 60 results
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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 $145). 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 January 21, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

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.
Southwest
8.0
Very good
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

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.
Delta
7.9
Good
8,089 reviews
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

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.
United Airlines
7.4
Good
9,191 reviews
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

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.
American Airlines
7.2
Good
11,174 reviews
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

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.
Frontier
5.7
Fair
3,057 reviews
Southwest
8.0
Very good
4,266 reviews

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

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 12h 30m. Ontario and Caribbean are separated by a distance of 3513 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 Delta ($168), American Airlines ($172), and United Airlines ($178).

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

    The most popular route from Ontario to Caribbean is Ontario - San Juan Luis Munoz Marin Intl. You may also consider Ontario - Punta Cana or Ontario - Nassau Intl.

  • 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 $145). 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

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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.
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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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$493FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$611FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$321Average$616FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$365Average$694FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$421Average$690FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$480Average$714FlexibilityNo cancel feeOn-time63%

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