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$155+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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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 November 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Fri 12/122:05 pmONT - SJU
1 stop29h 20mMultiple Airlines
Mon 12/151:27 pmSJU - ONT
1 stop26h 00mMultiple Airlines
Deal found 11/2$300
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 12/47:33 pmONT - SJU
1 stop25h 02mMultiple Airlines
Sun 12/71:59 amSJU - ONT
2 stops18h 34mMultiple Airlines
Deal found 11/3$337
This American Airlines deal was found by Cheapflights users on 11/1. 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 12/410:34 pmONT - SJU
1 stop19h 35mAmerican Airlines
Wed 12/108:20 amSJU - ONT
1 stop15h 19mAmerican Airlines
Deal found 11/1$355
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/198:45 amONT - SJU
2 stops38h 09mMultiple Airlines
Sun 11/236:00 amSJU - ONT
1 stop29h 20mMultiple Airlines
Deal found 11/3$432
This United Airlines deal was found by Cheapflights users on 11/3. 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.
Sun 12/75:05 amONT - SJU
1 stop9h 20mUnited Airlines
Fri 12/122:25 pmSJU - ONT
1 stop10h 17mUnited Airlines
Deal found 11/3$445
This American Airlines deal was found by Cheapflights users on 11/4. 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 12/612:46 pmONT - SDQ
2 stops19h 42mAmerican Airlines
Sat 12/134:58 pmSDQ - ONT
2 stops19h 55mAmerican Airlines
Deal found 11/4$462
This American Airlines deal was found by Cheapflights users on 11/4. 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 12/610:34 pmONT - SJU
1 stop11h 41mAmerican Airlines
Sat 12/136:54 amSJU - ONT
1 stop11h 01mAmerican Airlines
Deal found 11/4$462
This Frontier deal was found by Cheapflights users on 11/2. 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 12/184:16 pmONT - SJU
1 stop10h 18mFrontier
Mon 12/297:06 pmSJU - ONT
1 stop16h 18mFrontier
Deal found 11/2$475
This American Airlines deal was found by Cheapflights users on 11/4. 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 12/710:34 pmONT - NAS
2 stops9h 33mAmerican Airlines
Sat 12/133:00 pmNAS - ONT
1 stop9h 07mAmerican Airlines
Deal found 11/4$481
This American Airlines deal was found by Cheapflights users on 11/2. 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 11/296:10 amONT - NAS
1 stop8h 24mAmerican Airlines
Sun 12/73:00 pmNAS - ONT
1 stop9h 07mAmerican Airlines
Deal found 11/2$542
This Delta deal was found by Cheapflights users on 11/3. 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.
Wed 12/246:00 amONT - GCM
2 stops27h 36mDelta
Wed 12/313:42 pmGCM - ONT
2 stops23h 47mDelta
Deal found 11/3$567
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Wed 12/241:40 pmONT - NAS
2 stops20h 53mUnited Airlines
Wed 12/311:05 pmNAS - ONT
2 stops12h 20mUnited Airlines
Deal found 11/2$591

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 November 4, 2025.

Round-trip from

$300
(Kiwi.com)

One-way from

$155
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$488
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 ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 November 4, 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

Tue 3/3

6:00 am-9:26 pm

1 stop11h 26m

San Juan Luis Munoz Marin Intl

Thu 3/5

2:25 pm-8:45 pm

1 stop10h 20m

$445

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 2/21

1:45 pm-6:11 am

2 stops12h 26m

San Juan Luis Munoz Marin Intl

Fri 2/27

2:05 am-5:41 pm

3 stops19h 36m

$445

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 1/27

6:00 am-9:26 pm

1 stop11h 26m

San Juan Luis Munoz Marin Intl

Tue 2/3

3:46 pm-9:58 pm

1 stop10h 12m

$445

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 2/22

6:00 am-9:26 pm

1 stop11h 26m

San Juan Luis Munoz Marin Intl

Fri 2/27

2:05 am-5:41 pm

3 stops19h 36m

$445

OntarioSanto Domingo

ONT - SDQ

ONTSDQ

Ontario

Sat 12/6

10:34 pm-2:02 pm

2 stops11h 28m

Santo Domingo Las Americas

Sat 12/13

3:11 pm-8:53 am

2 stops21h 42m

$462

OntarioNassau

ONT - NAS

ONTNAS

Ontario

Sun 12/7

11:59 pm-5:55 pm

2 stops14h 56m

Nassau Intl

Sat 12/13

4:28 pm-8:53 am

2 stops19h 25m

$481

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 3/5

5:40 am-12:36 am

2 stops14h 56m

San Juan Luis Munoz Marin Intl

Thu 3/12

1:25 pm-8:45 pm

1 stop10h 20m

$483

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

Tue 3/24

11:59 pm-3:19 pm

1 stop12h 20m

Punta Cana

Wed 4/1

3:05 pm-8:35 am

2 stops20h 30m

$488

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

Tue 2/10

3:09 pm-2:55 pm

2 stops19h 46m

Punta Cana

Sun 2/15

4:43 pm-8:40 am

2 stops19h 57m

$493

OntarioSanto Domingo

ONT - SDQ

ONTSDQ

Ontario

Tue 3/3

10:30 pm-4:50 pm

2 stops14h 20m

Santo Domingo Las Americas

Tue 3/31

11:45 am-9:55 pm

2 stops13h 10m

$496

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 60 results
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6

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 $133). Flying from Ontario to Caribbean in November is currently the most expensive (average of $285). 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 November 4, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 17% on flights from Ontario to Caribbean by exploring options for tickets in the afternoon.

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 November 4, 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
4,239 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Food

7.0

Boarding

8.1

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
4,239 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Food

7.0

Boarding

8.1

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
7.9
Good
8,003 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Food

7.0

Boarding

8.1

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
9,002 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Food

7.0

Boarding

8.1

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
11,040 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Food

7.0

Boarding

8.1

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
3,117 reviews
Southwest
8.0
Very good
4,239 reviews

Comfort

8.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Food

7.0

Boarding

8.1

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.

  • How long is the flight from Ontario to Caribbean?

    Departing from Ontario to Caribbean will take you 11h 26m. 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 Delta ($178), Frontier ($179), and United Airlines ($223).

  • 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, April is the cheapest month in which you can book a flight from Ontario to Caribbean (average of $133). Flying from Ontario to Caribbean in November is currently the most expensive (average of $285). 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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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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$493FlexibilityNo cancel feeOn-time62%
DeltaCheapest$278Average$637FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$355Average$606FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$365Average$701FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$409Average$712FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$573Average$722FlexibilityNo cancel feeOn-time62%

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