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$168+ 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
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 agosto 14, 2025.

Round-trip from

$335
(Delta)

One-way from

$168
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$489
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. 11% potential increase in price ($61 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 August 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 agosto 14, 2025.

This Delta deal was found by Cheapflights users on 8/13. 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.
sáb. 10/255:50 pmONT - SJU
2 stops14h 46mDelta
vie. 10/317:15 amSJU - ONT
2 stops18h 26mDelta
Deal found 8/13$335
This United Airlines deal was found by Cheapflights users on 8/12. 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.
mar. 9/96:04 amONT - SJU
2 stops14h 53mUnited Airlines
vie. 9/261:05 amSJU - ONT
2 stops14h 46mUnited Airlines
Deal found 8/12$364
This Delta deal was found by Cheapflights users on 8/12. 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.
sáb. 10/257:05 amONT - SJU
1 stop11h 54mDelta
mié. 11/57:00 amSJU - ONT
2 stops19h 41mDelta
Deal found 8/12$370
This American Airlines deal was found by Cheapflights users on 8/14. 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.
sáb. 11/110:37 pmONT - SJU
1 stop19h 55mAmerican Airlines
dom. 11/96:25 amSJU - ONT
2 stops13h 36mAmerican Airlines
Deal found 8/14$386
This American Airlines deal was found by Cheapflights users on 8/14. 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.
sáb. 9/2010:20 amONT - SJU
2 stops10h 17mAmerican Airlines
vie. 9/263:05 pmSJU - ONT
1 stop10h 28mAmerican Airlines
Deal found 8/14$390
This Delta deal was found by Cheapflights users on 8/12. 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.
mié. 12/310:59 pmONT - SJU
1 stop9h 41mDelta
jue. 12/111:50 pmSJU - ONT
1 stop12h 51mDelta
Deal found 8/12$400
This lastminute.com deal was found by Cheapflights users on 8/11. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/2610:56 pmONT - SJU
1 stop11h 51mJetBlue
mié. 10/11:29 pmSJU - ONT
1 stop11h 00mJetBlue
Deal found 8/11$405
This lol.travel deal was found by Cheapflights users on 8/14. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/206:04 amONT - SJU
1 stop11h 34mUnited Airlines
vie. 9/262:55 pmSJU - ONT
1 stop9h 29mUnited Airlines
Deal found 8/14$407
This JetBlue deal was found by Cheapflights users on 8/13. 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.
mar. 9/2310:56 pmONT - SJU
1 stop13h 00mJetBlue
mié. 10/812:50 pmSJU - ONT
1 stop11h 39mJetBlue
Deal found 8/13$410
This Delta deal was found by Cheapflights users on 8/13. 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.
vie. 10/2410:00 pmONT - SJU
1 stop10h 36mDelta
sáb. 11/17:15 amSJU - ONT
2 stops17h 05mDelta
Deal found 8/13$411
This Delta deal was found by Cheapflights users on 8/14. 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.
dom. 9/1410:00 pmONT - GCM
1 stop11h 36mDelta
jue. 9/1812:52 pmGCM - ONT
1 stop11h 31mDelta
Deal found 8/14$454
This Delta deal was found by Cheapflights users on 8/14. 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.
dom. 9/141:15 pmONT - GCM
2 stops20h 21mDelta
vie. 9/1912:52 pmGCM - ONT
2 stops25h 25mDelta
Deal found 8/14$458

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 agosto 14, 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

sáb. 9/6

10:53 am-11:11 am

2 stops21h 18m

San Juan Luis Munoz Marin Intl

vie. 9/19

3:55 pm-9:21 am

2 stops20h 26m

$335

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

lun. 10/27

6:00 am-9:59 pm

2 stops12h 59m

San Juan Luis Munoz Marin Intl

vie. 11/7

7:15 am-9:20 pm

2 stops18h 05m

$335

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

sáb. 10/25

5:50 pm-11:36 am

2 stops14h 46m

San Juan Luis Munoz Marin Intl

vie. 10/31

7:15 am-10:41 pm

2 stops18h 26m

$335

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

lun. 9/29

10:35 pm-3:52 pm

1 stop14h 17m

San Juan Luis Munoz Marin Intl

vie. 10/3

3:05 pm-10:33 pm

1 stop10h 28m

$335

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mar. 10/28

5:50 pm-11:56 am

2 stops15h 06m

San Juan Luis Munoz Marin Intl

sáb. 11/1

7:15 am-9:20 pm

2 stops17h 05m

$335

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

sáb. 10/25

7:05 am-9:59 pm

1 stop11h 54m

San Juan Luis Munoz Marin Intl

sáb. 11/1

7:15 am-10:41 pm

2 stops18h 26m

$335

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mar. 10/28

5:50 pm-11:56 am

2 stops15h 06m

San Juan Luis Munoz Marin Intl

mar. 11/4

7:15 am-10:41 pm

2 stops19h 26m

$335

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

dom. 10/26

10:00 pm-1:21 pm

1 stop12h 21m

San Juan Luis Munoz Marin Intl

sáb. 11/1

7:15 am-10:41 pm

2 stops18h 26m

$335

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

sáb. 10/25

7:05 am-9:59 pm

1 stop11h 54m

San Juan Luis Munoz Marin Intl

mar. 11/4

7:15 am-10:41 pm

2 stops19h 26m

$335

OntarioGeorge Town

ONT - GCM

ONTGCM

Ontario

dom. 9/14

10:00 pm-11:36 am

1 stop11h 36m

George Town Owen Roberts Intl

jue. 9/18

12:52 pm-10:23 pm

1 stop11h 31m

$454

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

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 June is currently the most expensive (average of $339). 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 agosto 14, 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.

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 agosto 14, 2025.
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
4,244 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,916 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,217 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Comfort

8.0

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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 American Airlines ($168), United Airlines ($235), and JetBlue ($236).

  • 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 June is currently the most expensive (average of $339). 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$436FlexibilityNo cancel feeOn-time62%
DeltaCheapest$278Average$656FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$364Average$701FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$366Average$617FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$409Average$703FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$425Average$650FlexibilityNo cancel feeOn-time62%

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