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Caribbean Islands

$195+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Round-trip from

$355
(American Airlines)

One-way from

$195
(JetBlue)

Popular in

December

Cheapest in

September

Average price

$421
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. 10% potential increase in price ($54 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 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 April 17, 2025.

This American Airlines deal was found by Cheapflights users on 4/17. 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.
Wed 9/108:04 pmONT - SJU
2 stops17h 16mAmerican Airlines
Thu 9/185:25 pmSJU - ONT
2 stops19h 14mAmerican Airlines
Deal found 4/17$355
This Trip.com deal was found by Cheapflights users on 4/17. 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.
Sun 5/112:06 pmONT - SJU
2 stops28h 55mFrontier
Tue 5/133:56 amSJU - ONT
2 stops33h 06mFrontier
Deal found 4/17$368
This JetBlue deal was found by Cheapflights users on 4/17. 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.
Tue 7/2911:45 pmONT - SJU
1 stop12h 12mJetBlue
Sat 8/91:20 pmSJU - ONT
1 stop12h 10mJetBlue
Deal found 4/17$390
This Trip.com deal was found by Cheapflights users on 4/17. 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 5/162:06 pmONT - STT
2 stops19h 20mMultiple Airlines
Mon 5/192:41 pmSTT - ONT
2 stops24h 27mMultiple Airlines
Deal found 4/17$393
This Delta deal was found by Cheapflights users on 4/17. 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 8/2210:59 pmONT - SJU
1 stop11h 30mDelta
Tue 8/262:39 pmSJU - ONT
1 stop10h 50mDelta
Deal found 4/17$422
This Southwest deal was found by Cheapflights users on 4/17. 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 7/238:10 pmONT - SJU
2 stops11h 15mSouthwest
Wed 7/306:30 amSJU - ONT
1 stop11h 35mSouthwest
Deal found 4/17$440
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Sat 10/185:10 amONT - SJU
1 stop9h 20mUnited Airlines
Tue 10/212:55 pmSJU - ONT
1 stop10h 01mUnited Airlines
Deal found 4/17$445
This Booking.com deal was found by Cheapflights users on 4/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/28:24 amONT - MBJ
2 stops27h 29mFrontier
Sat 5/103:17 pmMBJ - ONT
2 stops50h 22mFrontier
Deal found 4/16$513
This Frontier deal was found by Cheapflights users on 4/17. 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.
Mon 5/512:59 amONT - PUJ
2 stops12h 40mFrontier
Fri 5/239:18 pmPUJ - ONT
2 stops22h 02mFrontier
Deal found 4/17$518
This Delta deal was found by Cheapflights users on 4/17. 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 9/1210:59 pmONT - STT
1 stop11h 40mDelta
Tue 9/232:49 pmSTT - ONT
1 stop10h 52mDelta
Deal found 4/17$535
This American Airlines deal was found by Cheapflights users on 4/17. 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 5/154:35 pmONT - SXM
2 stops18h 49mAmerican Airlines
Thu 5/222:05 pmSXM - ONT
2 stops21h 49mAmerican Airlines
Deal found 4/17$544
This United Airlines deal was found by Cheapflights users on 4/17. 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 6/116:32 pmONT - PUJ
2 stops13h 32mUnited Airlines
Thu 6/191:50 pmPUJ - ONT
2 stops25h 41mUnited Airlines
Deal found 4/17$553

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 April 17, 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

Wed 9/10

8:04 pm-4:20 pm

2 stops17h 16m

San Juan Luis Munoz Marin Intl

Thu 9/18

5:25 pm-9:39 am

2 stops19h 14m

$355

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 5/11

2:06 pm-10:01 pm

2 stops28h 55m

San Juan Luis Munoz Marin Intl

Tue 5/13

3:56 am-10:02 am

2 stops33h 06m

$368

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 7/29

11:45 pm-2:57 pm

1 stop12h 12m

San Juan Luis Munoz Marin Intl

Sat 8/9

1:20 pm-10:30 pm

1 stop12h 10m

$390

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Fri 5/16

2:06 pm-12:26 pm

2 stops19h 20m

Saint Thomas Island Cyril E King

Mon 5/19

2:41 pm-12:08 pm

2 stops24h 27m

$393

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fri 8/22

10:59 pm-1:29 pm

1 stop11h 30m

San Juan Luis Munoz Marin Intl

Tue 8/26

2:39 pm-10:29 pm

1 stop10h 50m

$422

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 7/23

8:10 pm-10:25 am

2 stops11h 15m

San Juan Luis Munoz Marin Intl

Wed 7/30

6:30 am-3:05 pm

1 stop11h 35m

$440

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 8/2

6:38 pm-11:57 am

2 stops14h 19m

San Juan Luis Munoz Marin Intl

Thu 8/7

2:55 pm-9:37 pm

1 stop9h 42m

$457

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Fri 5/2

8:24 am-1:53 pm

2 stops27h 29m

Montego Bay Sangster Intl

Sat 5/10

3:17 pm-3:39 pm

2 stops50h 22m

$513

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

Mon 5/5

12:59 am-4:39 pm

2 stops12h 40m

Punta Cana

Fri 5/23

9:18 pm-4:20 pm

2 stops22h 02m

$518

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Fri 9/12

10:59 pm-1:39 pm

1 stop11h 40m

Saint Thomas Island Cyril E King

Tue 9/23

2:49 pm-10:41 pm

1 stop10h 52m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 58 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 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 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 April 17, 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.

Rainfall in Caribbean Islands by month

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

In terms of precipitation, rainfall in Caribbean Islands 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 Islands when rainfall is around 2.2 in.

Temperature in Caribbean Islands by month

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

If weather is an important factor for your trip to Caribbean Islands, 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 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 April 17, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Ontario to Caribbean Islands by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,882 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

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
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

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
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

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
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

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
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

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
2,926 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.1

Food

7.1

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 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 JetBlue, with whom users have recently found tickets for as low as $195. However, be on the lookout for offers from Frontier and United Airlines, 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 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 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$389FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$273Average$601FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$322Average$639FlexibilityNo cancel feeOn-time69%
DeltaCheapest$334Average$624FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$357Average$700FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$389Average$575FlexibilityNo cancel feeOn-time63%

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