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$180+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Round-trip from

$365
(Delta)

One-way from

$180
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$455
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 ($19 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Trip.com deal was found by Cheapflights users on 4/30. 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.
Thu 6/198:09 pmONT - SJU
1 stop20h 36mMultiple Airlines
Mon 6/231:27 amSJU - ONT
1 stop10h 44mMultiple Airlines
Deal found 4/30$338
This Delta deal was found by Cheapflights users on 4/30. 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.
Sat 9/1310:59 pmONT - SJU
1 stop9h 45mDelta
Sat 9/2012:55 pmSJU - ONT
1 stop9h 47mDelta
Deal found 4/30$365
This Southwest deal was found by Cheapflights users on 4/29. 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.
Fri 10/315:30 amONT - SJU
2 stops10h 55mSouthwest
Mon 11/36:10 amSJU - ONT
1 stop15h 05mSouthwest
Deal found 4/29$410
This American Airlines deal was found by Cheapflights users on 4/30. 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 9/2711:59 pmONT - SJU
1 stop11h 20mAmerican Airlines
Sun 10/55:25 pmSJU - ONT
2 stops19h 11mAmerican Airlines
Deal found 4/30$415
This JetBlue deal was found by Cheapflights users on 4/30. 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 9/1611:00 pmONT - SJU
1 stop10h 12mJetBlue
Fri 9/2611:30 amSJU - ONT
1 stop13h 11mJetBlue
Deal found 4/30$437
This United Airlines deal was found by Cheapflights users on 4/30. 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 8/235:10 amONT - SJU
1 stop9h 20mUnited Airlines
Thu 8/287:00 amSJU - ONT
2 stops16h 33mUnited Airlines
Deal found 4/30$455
This Trip.com deal was found by Cheapflights users on 4/29. 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.
Thu 5/295:21 pmONT - STT
2 stops16h 05mMultiple Airlines
Thu 6/51:21 pmSTT - ONT
2 stops25h 23mMultiple Airlines
Deal found 4/29$482
This Frontier deal was found by Cheapflights users on 4/28. 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.
Sun 5/255:26 pmONT - MBJ
2 stops18h 32mFrontier
Mon 6/29:13 amMBJ - ONT
2 stops16h 26mFrontier
Deal found 4/28$488
This Frontier deal was found by Cheapflights users on 4/29. 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.
Sat 5/241:24 pmONT - PUJ
2 stops16h 23mFrontier
Fri 5/309:18 pmPUJ - ONT
2 stops22h 02mFrontier
Deal found 4/29$491
This JetBlue deal was found by Cheapflights users on 4/28. 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.
Fri 7/411:59 pmONT - PUJ
1 stop15h 22mJetBlue
Fri 7/111:15 pmPUJ - ONT
1 stop12h 15mJetBlue
Deal found 4/28$505
This JetBlue deal was found by Cheapflights users on 4/30. 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 9/1611:00 pmONT - SDQ
1 stop11h 22mJetBlue
Fri 9/2612:35 pmSDQ - ONT
1 stop12h 06mJetBlue
Deal found 4/30$537
This Trip.com deal was found by Cheapflights users on 4/29. 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 5/256:00 amONT - PUJ
2 stops26h 47mMultiple Airlines
Wed 6/1112:42 pmPUJ - ONT
2 stops30h 36mMultiple Airlines
Deal found 4/29$544

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 May 1, 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

Thu 6/19

8:09 pm-7:45 pm

1 stop20h 36m

San Juan Luis Munoz Marin Intl

Mon 6/23

1:27 am-9:11 am

1 stop10h 44m

$338

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 9/13

10:59 pm-11:44 am

1 stop9h 45m

San Juan Luis Munoz Marin Intl

Sat 9/20

12:55 pm-7:42 pm

1 stop9h 47m

$365

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 9/27

11:59 pm-2:19 pm

1 stop11h 20m

San Juan Luis Munoz Marin Intl

Sun 10/5

5:25 pm-9:36 am

2 stops19h 11m

$415

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 9/16

11:00 pm-12:12 pm

1 stop10h 12m

San Juan Luis Munoz Marin Intl

Fri 9/26

11:30 am-9:41 pm

1 stop13h 11m

$437

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 8/23

5:10 am-5:30 pm

1 stop9h 20m

San Juan Luis Munoz Marin Intl

Thu 8/28

7:00 am-8:33 pm

2 stops16h 33m

$455

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Thu 5/29

5:21 pm-12:26 pm

2 stops16h 05m

Saint Thomas Island Cyril E King

Thu 6/5

1:21 pm-11:44 am

2 stops25h 23m

$482

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Sun 5/25

5:26 pm-1:58 pm

2 stops18h 32m

Montego Bay Sangster Intl

Mon 6/2

9:13 am-11:39 pm

2 stops16h 26m

$488

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

Sat 5/24

1:24 pm-8:47 am

2 stops16h 23m

Punta Cana

Fri 5/30

9:18 pm-4:20 pm

2 stops22h 02m

$491

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

Fri 7/4

11:59 pm-6:21 pm

1 stop15h 22m

Punta Cana

Fri 7/11

1:15 pm-10:30 pm

1 stop12h 15m

$505

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 7/8

8:10 pm-10:40 am

2 stops11h 30m

San Juan Luis Munoz Marin Intl

Wed 7/23

2:45 pm-10:50 pm

2 stops11h 05m

$510

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 May 1, 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 May 1, 2025.
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Copa Airlines
7.5
Good
1,415 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Comfort

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 ($183), JetBlue ($229), and Frontier ($246).

  • 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$385FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$273Average$601FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$322Average$651FlexibilityNo cancel feeOn-time69%
DeltaCheapest$334Average$624FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$357Average$694FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$389Average$569FlexibilityNo cancel feeOn-time63%

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