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$120+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Apr 15 — Apr 221
Tue 4/15
Tue 4/22
1 adult, Economy
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Cheap 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 10, 2025.

Round-trip from

$336
(Trip.com)

One-way from

$120
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$421
From Ontario to Caribbean
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One-way flight from Ontario to Caribbean
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Highest demand for flights based on searches. 10% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find 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 10, 2025.

This Trip.com deal was found by Cheapflights users on 4/8. 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.
Fri 4/2512:59 amONT - SJU
2 stops19h 40mMultiple Airlines
Mon 4/2812:54 amSJU - ONT
1 stop15h 43mMultiple Airlines
Deal found 4/8$336
This United Airlines deal was found by Cheapflights users on 4/9. 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 9/226:04 amONT - SJU
1 stop11h 34mUnited Airlines
Fri 9/262:00 pmSJU - ONT
1 stop9h 17mUnited Airlines
Deal found 4/9$355
This Trip.com deal was found by Cheapflights users on 4/10. 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.
Mon 5/52:06 pmONT - STT
2 stops19h 08mMultiple Airlines
Sat 5/102:41 pmSTT - ONT
2 stops19h 43mMultiple Airlines
Deal found 4/10$381
This Delta deal was found by Cheapflights users on 4/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/212:07 pmONT - SJU
1 stop8h 08mDelta
Fri 5/912:50 pmSJU - ONT
1 stop12h 39mDelta
Deal found 4/9$395
This American Airlines deal was found by Cheapflights users on 4/10. 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 9/111:02 pmONT - SJU
1 stop12h 43mAmerican Airlines
Tue 9/301:55 pmSJU - ONT
2 stops11h 01mAmerican Airlines
Deal found 4/10$428
This JetBlue deal was found by Cheapflights users on 4/9. 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.
Sun 5/410:40 pmONT - SJU
1 stop14h 15mJetBlue
Sat 5/1011:58 amSJU - ONT
1 stop12h 13mJetBlue
Deal found 4/9$436
This American Airlines deal was found by Cheapflights users on 4/9. 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.
Thu 8/2111:02 pmONT - AUA
1 stop13h 23mAmerican Airlines
Tue 8/261:05 pmAUA - ONT
1 stop9h 42mAmerican Airlines
Deal found 4/9$436
This Frontier deal was found by Cheapflights users on 4/10. 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.
Fri 5/307:37 pmONT - MBJ
2 stops14h 16mFrontier
Mon 6/29:13 amMBJ - ONT
2 stops16h 26mFrontier
Deal found 4/10$494
This JetBlue deal was found by Cheapflights users on 4/10. 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.
Sun 6/110:59 pmONT - PUJ
1 stop11h 31mJetBlue
Fri 6/131:15 pmPUJ - ONT
1 stop12h 15mJetBlue
Deal found 4/10$505
This American Airlines deal was found by Cheapflights users on 4/10. 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.
Sat 9/611:09 pmONT - MBJ
1 stop10h 01mAmerican Airlines
Sat 9/133:15 pmMBJ - ONT
1 stop8h 41mAmerican Airlines
Deal found 4/10$506
This American Airlines deal was found by Cheapflights users on 4/9. 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.
Sat 11/111:59 pmONT - PUJ
1 stop13h 36mAmerican Airlines
Sat 11/84:10 pmPUJ - ONT
2 stops20h 34mAmerican Airlines
Deal found 4/9$509
This American Airlines deal was found by Cheapflights users on 4/9. 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.
Sat 5/1010:40 pmONT - NAS
1 stop12h 05mAmerican Airlines
Sat 5/1710:29 amNAS - ONT
1 stop13h 36mAmerican Airlines
Deal found 4/9$517

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 10, 2025.
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

Fri 4/25

12:59 am-11:39 pm

2 stops19h 40m

San Juan Luis Munoz Marin Intl

Mon 4/28

12:54 am-1:37 pm

1 stop15h 43m

$336

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 5/3

6:00 am-11:57 pm

2 stops14h 57m

San Juan Luis Munoz Marin Intl

Sat 5/10

7:45 am-8:53 pm

2 stops16h 08m

$355

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Mon 5/5

2:06 pm-12:14 pm

2 stops19h 08m

Saint Thomas Island Cyril E King

Sat 5/10

2:41 pm-7:24 am

2 stops19h 43m

$381

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fri 5/2

12:07 pm-11:15 pm

1 stop8h 08m

San Juan Luis Munoz Marin Intl

Fri 5/9

12:50 pm-10:29 pm

1 stop12h 39m

$395

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 5/4

10:40 pm-3:55 pm

1 stop14h 15m

San Juan Luis Munoz Marin Intl

Sat 5/10

11:58 am-9:11 pm

1 stop12h 13m

$436

OntarioOranjestad

ONT - AUA

ONTAUA

Ontario

Thu 8/21

11:02 pm-3:25 pm

1 stop13h 23m

Oranjestad Reina Beatrix

Tue 8/26

1:05 pm-7:47 pm

1 stop9h 42m

$436

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 5/1

6:15 am-5:00 am

2 stops19h 45m

San Juan Luis Munoz Marin Intl

Mon 5/5

5:30 pm-8:56 am

2 stops18h 26m

$475

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Fri 5/30

7:37 pm-11:53 am

2 stops14h 16m

Montego Bay Sangster Intl

Mon 6/2

9:13 am-11:39 pm

2 stops16h 26m

$494

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

Sun 6/1

10:59 pm-3:33 pm

1 stop13h 34m

Punta Cana

Tue 6/10

11:35 am-9:22 pm

1 stop12h 47m

$505

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Sat 9/6

11:09 pm-11:10 am

1 stop10h 01m

Montego Bay Sangster Intl

Sat 9/13

3:15 pm-9:56 pm

1 stop8h 41m

$506

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

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, September is the cheapest month in which you can book a flight from Ontario to Caribbean (average of $254). Flying from Ontario to Caribbean in December is currently the most expensive (average of $336). 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 CB?

Find hourly flight availability from Ontario to Caribbean. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 10, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Caribbean as you normally would.

Rainfall in Caribbean by month

Plan your trip to Caribbean by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Caribbean ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit Caribbean when rainfall is around 2.2 in.

Temperature in Caribbean by month

Plan your trip to Caribbean by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Caribbean, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

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 10, 2025.
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,851 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,278 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,907 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,636 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
JetBlue
7.3
Good
2,924 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • 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 ($178), Frontier ($187), and JetBlue ($194).

  • 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 - Montego Bay Sangster 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, September is the cheapest month in which you can book a flight from Ontario to Caribbean (average of $254). Flying from Ontario to Caribbean in December is currently the most expensive (average of $336). 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 April 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$385FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$273Average$601FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$322Average$645FlexibilityNo cancel feeOn-time69%
DeltaCheapest$334Average$624FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$360Average$699FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$389Average$569FlexibilityNo cancel feeOn-time63%

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