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Caribbean Islands

$168+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Aug 7 — Aug 141
Thu 8/7
Thu 8/14
1 adult, Economy
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Cheap 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 August 2, 2025.

Round-trip from

$335
(American Airlines)

One-way from

$168
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$463
From Ontario to Caribbean Islands
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One-way flight from Ontario to Caribbean Islands
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Highest demand for flights based on searches. 11% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% 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 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 August 2, 2025.

This American Airlines deal was found by Cheapflights users on 8/1. 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.
Sat 9/610:35 pmONT - SJU
1 stop13h 24mAmerican Airlines
Fri 9/123:05 pmSJU - ONT
2 stops21h 16mAmerican Airlines
Deal found 8/1$335
This Delta deal was found by Cheapflights users on 8/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/294:35 pmONT - SJU
2 stops16h 06mDelta
Fri 11/77:15 amSJU - ONT
2 stops18h 05mDelta
Deal found 8/1$370
This JetBlue deal was found by Cheapflights users on 7/31. 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.
Sat 9/610:56 pmONT - SJU
1 stop12h 59mJetBlue
Thu 9/111:25 pmSJU - ONT
1 stop11h 04mJetBlue
Deal found 7/31$410
This Southwest deal was found by Cheapflights users on 7/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:30 pmONT - SJU
2 stops12h 30mSouthwest
Sun 11/96:10 amSJU - ONT
1 stop15h 05mSouthwest
Deal found 7/31$421
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/166:04 amONT - SJU
1 stop11h 34mUnited Airlines
Fri 9/262:00 pmSJU - ONT
1 stop9h 24mUnited Airlines
Deal found 7/31$425
This JetBlue deal was found by Cheapflights users on 7/31. 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 9/810:56 pmONT - PUJ
1 stop10h 14mJetBlue
Wed 9/1711:30 amPUJ - ONT
1 stop12h 59mJetBlue
Deal found 7/31$495
This Priceline deal was found by Cheapflights users on 7/31. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/910:56 pmONT - SDQ
1 stop11h 28mJetBlue
Thu 9/1812:47 pmSDQ - ONT
1 stop11h 42mJetBlue
Deal found 7/31$495
This American Airlines deal was found by Cheapflights users on 8/1. 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.
Tue 9/168:15 amONT - POP
2 stops25h 20mAmerican Airlines
Thu 9/251:35 pmPOP - ONT
2 stops23h 28mAmerican Airlines
Deal found 8/1$509
This American Airlines deal was found by Cheapflights users on 7/31. 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 10/1210:29 pmONT - AUA
1 stop9h 51mAmerican Airlines
Thu 10/1612:20 pmAUA - ONT
1 stop10h 44mAmerican Airlines
Deal found 7/31$517
This Delta deal was found by Cheapflights users on 7/31. 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.
Mon 10/610:29 pmONT - MBJ
1 stop12h 51mDelta
Fri 10/102:45 pmMBJ - ONT
1 stop9h 27mDelta
Deal found 7/31$539
This American Airlines deal was found by Cheapflights users on 7/31. 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 10/611:59 pmONT - MBJ
2 stops13h 06mAmerican Airlines
Fri 10/104:22 pmMBJ - ONT
2 stops18h 57mAmerican Airlines
Deal found 7/31$543
This Delta deal was found by Cheapflights users on 7/31. 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.
Sun 9/1410:00 pmONT - GCM
1 stop11h 36mDelta
Sun 9/2112:52 pmGCM - ONT
1 stop11h 31mDelta
Deal found 7/31$545

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 August 2, 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 9/6

10:35 pm-2:59 pm

1 stop13h 24m

San Juan Luis Munoz Marin Intl

Fri 9/12

3:05 pm-9:21 am

2 stops21h 16m

$335

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 10/29

4:35 pm-11:41 am

2 stops16h 06m

San Juan Luis Munoz Marin Intl

Fri 11/7

7:15 am-9:20 pm

2 stops18h 05m

$370

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 9/6

10:56 pm-2:55 pm

1 stop12h 59m

San Juan Luis Munoz Marin Intl

Thu 9/11

1:25 pm-9:29 pm

1 stop11h 04m

$410

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 11/5

6:30 pm-11:00 am

2 stops12h 30m

San Juan Luis Munoz Marin Intl

Sun 11/9

6:10 am-5:15 pm

1 stop15h 05m

$421

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 9/16

6:04 am-8:38 pm

1 stop11h 34m

San Juan Luis Munoz Marin Intl

Fri 9/26

2:00 pm-8:24 pm

1 stop9h 24m

$425

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

Mon 9/8

10:56 pm-12:10 pm

1 stop10h 14m

Punta Cana

Wed 9/17

11:30 am-9:29 pm

1 stop12h 59m

$495

OntarioSanto Domingo

ONT - SDQ

ONTSDQ

Ontario

Tue 9/9

10:56 pm-1:24 pm

1 stop11h 28m

Santo Domingo Las Americas

Thu 9/18

12:47 pm-9:29 pm

1 stop11h 42m

$495

OntarioPuerto Plata

ONT - POP

ONTPOP

Ontario

Tue 9/16

8:15 am-12:35 pm

2 stops25h 20m

Puerto Plata La Union

Thu 9/25

1:35 pm-10:03 am

2 stops23h 28m

$509

OntarioOranjestad

ONT - AUA

ONTAUA

Ontario

Sun 10/12

10:29 pm-11:20 am

1 stop9h 51m

Oranjestad Reina Beatrix

Thu 10/16

12:20 pm-8:04 pm

1 stop10h 44m

$517

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Mon 10/6

10:29 pm-1:20 pm

1 stop12h 51m

Montego Bay Sangster Intl

Fri 10/10

2:45 pm-10:12 pm

1 stop9h 27m

$539

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

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, September is the cheapest month in which you can book a flight from Ontario to Caribbean Islands (average of $254). Flying from Ontario to Caribbean Islands 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 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 August 2, 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 Islands as you normally would.

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 August 2, 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
4,246 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,983 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,904 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
JetBlue
7.3
Good
2,915 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Overall

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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.

  • What are the cheapest airlines to fly from Ontario to Caribbean Islands one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $168. However, be on the lookout for offers from JetBlue and Delta, as they are both options that can get you from Ontario to Caribbean Islands for a low price.

  • 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 - Montego Bay Sangster Intl.

  • 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, September is the cheapest month in which you can book a flight from Ontario to Caribbean Islands (average of $254). Flying from Ontario to Caribbean Islands 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 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 August 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$421FlexibilityNo cancel feeOn-time62%
DeltaCheapest$278Average$650FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$363Average$695FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$366Average$616FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$409Average$703FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$425Average$690FlexibilityNo cancel feeOn-time62%

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