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Caribbean Islands

$141+ Cheap flights from Ontario (ONT) to Caribbean Islands

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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from Ontario to Caribbean Islands

Cheapest flights from Ontario to Caribbean Islands
Explore the most affordable flight options available from Ontario to Caribbean Islands. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This CheapOair deal was found by Cheapflights users on 12/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/244:22 pmONT - SJU
1 stop10h 12mFrontier
Thu 1/17:06 pmSJU - ONT
1 stop16h 13mFrontier
Deal found 12/22$415
This Frontier deal was found by Cheapflights users on 12/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/244:22 pmONT - SJU
1 stop10h 12mFrontier
Sat 12/277:06 pmSJU - ONT
1 stop16h 18mFrontier
Deal found 12/20$474
This Trip.com deal was found by Cheapflights users on 12/22. 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.
Tue 12/304:41 pmONT - SJU
1 stop9h 53mFrontier
Sun 1/258:00 amSJU - ONT
2 stops32h 43mFrontier
Deal found 12/22$481
This Frontier deal was found by Cheapflights users on 12/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:22 pmONT - SJU
1 stop10h 12mFrontier
Sun 1/47:06 pmSJU - ONT
1 stop16h 18mFrontier
Deal found 12/22$482
This Frontier deal was found by Cheapflights users on 12/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/254:16 pmONT - SJU
1 stop10h 18mFrontier
Sat 12/277:06 pmSJU - ONT
1 stop16h 18mFrontier
Deal found 12/22$494
This Frontier deal was found by Cheapflights users on 12/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:41 pmONT - SJU
1 stop9h 53mFrontier
Sun 1/47:06 pmSJU - ONT
1 stop16h 18mFrontier
Deal found 12/22$497
This American Airlines deal was found by Cheapflights users on 12/22. 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.
Tue 12/3011:59 pmONT - SJU
1 stop19h 28mAmerican Airlines
Sat 1/106:00 amSJU - ONT
2 stops12h 18mAmerican Airlines
Deal found 12/22$539
This United Airlines deal was found by Cheapflights users on 12/22. 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 12/306:04 amONT - SJU
1 stop11h 22mUnited Airlines
Sat 1/177:45 amSJU - ONT
2 stops17h 13mUnited Airlines
Deal found 12/22$554
This CheapOair deal was found by Cheapflights users on 12/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/284:41 pmONT - SJU
1 stop9h 53mFrontier
Sun 1/47:06 pmSJU - ONT
1 stop16h 18mFrontier
Deal found 12/22$583
This American Airlines deal was found by Cheapflights users on 12/22. 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 12/226:10 amONT - MBJ
1 stop7h 50mAmerican Airlines
Fri 1/94:27 pmMBJ - ONT
1 stop9h 21mAmerican Airlines
Deal found 12/22$645
This United Airlines deal was found by Cheapflights users on 12/22. 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 12/2311:59 pmONT - NAS
1 stop12h 23mUnited Airlines
Sat 1/242:35 pmNAS - ONT
1 stop10h 23mUnited Airlines
Deal found 12/22$726
This United Airlines deal was found by Cheapflights users on 12/22. 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 12/2311:59 pmONT - NAS
1 stop12h 23mUnited Airlines
Mon 1/263:35 pmNAS - ONT
2 stops24h 12mUnited Airlines
Deal found 12/22$753

Find flight deals from Ontario to Caribbean Islands

Keep the following information in mind while searching for Ontario to Caribbean Islands flight deals. Data was last updated December 23, 2025.

Round-trip from

$324
(Kiwi.com)

One-way from

$141
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$571
From Ontario to Caribbean Islands
Search Deals
One-way flight from Ontario to Caribbean Islands
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Caribbean Islands 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 December 23, 2025.
Use the filters below to find and compare flights from Ontario to Caribbean Islands that are best for you.

Fly from

Ontario

Fly to

Caribbean Islands

Route

Depart

Return

Price

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 2/21

10:20 pm-1:01 pm

1 stop10h 41m

San Juan Luis Munoz Marin Intl

Wed 2/25

6:15 am-12:02 pm

1 stop9h 47m

$335

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 1/26

6:00 am-12:36 am

2 stops14h 36m

San Juan Luis Munoz Marin Intl

Wed 1/28

8:35 am-8:58 pm

2 stops16h 23m

$373

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 1/13

8:00 am-9:26 pm

1 stop9h 26m

San Juan Luis Munoz Marin Intl

Thu 1/22

7:45 am-8:58 pm

2 stops17h 13m

$373

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 1/7

6:00 am-12:36 am

2 stops14h 36m

San Juan Luis Munoz Marin Intl

Tue 1/13

8:10 am-8:58 pm

2 stops16h 48m

$374

OntarioNassau

ONT - NAS

ONTNAS

Ontario

Tue 5/26

6:02 am-3:58 pm

1 stop6h 56m

Nassau Intl

Wed 6/3

5:00 pm-9:21 pm

1 stop7h 21m

$393

OntarioNassau

ONT - NAS

ONTNAS

Ontario

Thu 2/5

11:59 pm-5:55 pm

2 stops14h 56m

Nassau Intl

Thu 2/12

2:54 pm-9:29 pm

1 stop9h 35m

$397

OntarioNassau

ONT - NAS

ONTNAS

Ontario

Sun 2/8

3:09 pm-9:57 am

2 stops15h 48m

Nassau Intl

Fri 2/13

1:14 pm-9:29 pm

1 stop11h 15m

$397

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Thu 2/5

11:59 pm-3:16 pm

1 stop12h 17m

Montego Bay Sangster Intl

Thu 2/12

11:15 am-9:29 pm

1 stop13h 14m

$419

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Mon 1/19

11:59 pm-3:16 pm

1 stop12h 17m

Montego Bay Sangster Intl

Mon 1/26

4:27 pm-10:48 pm

1 stop9h 21m

$419

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Thu 1/29

11:59 pm-3:16 pm

1 stop12h 17m

Montego Bay Sangster Intl

Tue 2/3

4:27 pm-10:48 pm

1 stop9h 21m

$419

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Caribbean Islands

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

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

Currently, April is the cheapest month in which you can book a flight from Ontario to Caribbean Islands (average of $137). Flying from Ontario to Caribbean Islands 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.

What is the cheapest time of day to fly from ONT to EPX?

Find hourly flight availability from Ontario to Caribbean Islands. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 23, 2025.

It’s optimal to fly from Ontario to Caribbean Islands at noon. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Caribbean Islands

Get insights into the airlines that provide service to Caribbean Islands. 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 Islands. Reviews last updated December 23, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Ontario to Caribbean Islands have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,253 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

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
4,253 reviews
Southwest
8.0
Very good
4,253 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

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
8,014 reviews
Southwest
8.0
Very good
4,253 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

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
9,105 reviews
Southwest
8.0
Very good
4,253 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

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
11,054 reviews
Southwest
8.0
Very good
4,253 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

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
5.8
Fair
3,075 reviews
Southwest
8.0
Very good
4,253 reviews

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

Entertainment

7.5

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 Islands. 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 Islands?

    If you book a flight to Caribbean Islands 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 Islands?

    There are many flights that can get you from Ontario to Caribbean Islands in 10h 41m. Fly via Delta, United Airlines, or American Airlines to get the fastest option. The distance from Ontario to Caribbean Islands is about 3334 mi. This flight may include one or multiple stops.

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

    The most popular flight routes from Ontario to Caribbean Islands are Ontario - San Juan Luis Munoz Marin Intl, Ontario - Punta Cana and Ontario - Oranjestad Reina Beatrix.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Ontario to Caribbean Islands (average of $137). Flying from Ontario to Caribbean Islands 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 Islands

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 Islands

Discover the top 6 airlines that operate flights from Ontario to Caribbean Islands. 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$493FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$634FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$321Average$622FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$365Average$704FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$421Average$690FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$480Average$718FlexibilityNo cancel feeOn-time63%

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