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$183+ 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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$343
(Frontier)

One-way from

$183
(Delta)

Popular in

December

Cheapest in

October

Average price

$485
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 ($57 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 June 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 June 12, 2025.

This Frontier deal was found by Cheapflights users on 6/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/112:59 amONT - SJU
2 stops11h 38mFrontier
Mon 10/69:07 amSJU - ONT
2 stops14h 47mFrontier
Deal found 6/11$343
This Delta deal was found by Cheapflights users on 6/12. 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.
Tue 9/165:05 pmONT - SJU
2 stops17h 18mDelta
Sat 9/2712:55 pmSJU - ONT
1 stop9h 47mDelta
Deal found 6/12$365
This JetBlue deal was found by Cheapflights users on 6/9. 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.
Sun 9/710:56 pmONT - SJU
1 stop10h 44mJetBlue
Sat 9/1312:50 pmSJU - ONT
1 stop11h 39mJetBlue
Deal found 6/9$410
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:04 amONT - SJU
1 stop11h 34mUnited Airlines
Mon 9/221:05 amSJU - ONT
2 stops14h 27mUnited Airlines
Deal found 6/11$413
This Southwest deal was found by Cheapflights users on 6/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/25:45 amONT - SJU
2 stops11h 00mSouthwest
Wed 9/108:00 amSJU - ONT
2 stops14h 35mSouthwest
Deal found 6/12$451
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1012:46 pmONT - SJU
2 stops21h 00mAmerican Airlines
Thu 9/186:10 amSJU - ONT
2 stops19h 06mAmerican Airlines
Deal found 6/11$480
This JetBlue deal was found by Cheapflights users on 6/10. 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 9/1610:56 pmONT - STI
1 stop16h 07mJetBlue
Fri 9/2612:48 pmSTI - ONT
1 stop11h 41mJetBlue
Deal found 6/10$495
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2810:28 pmONT - PUJ
1 stop9h 33mAmerican Airlines
Wed 8/132:20 pmPUJ - ONT
2 stops11h 28mAmerican Airlines
Deal found 6/11$497
This JetBlue deal was found by Cheapflights users on 6/10. 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.
Sun 9/2810:56 pmONT - PUJ
1 stop13h 29mJetBlue
Wed 10/111:30 amPUJ - ONT
1 stop12h 59mJetBlue
Deal found 6/10$503
This JetBlue deal was found by Cheapflights users on 6/10. 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 7/2511:59 pmONT - AUA
1 stop12h 46mJetBlue
Thu 7/3112:20 pmAUA - ONT
1 stop12h 39mJetBlue
Deal found 6/10$517
This JetBlue deal was found by Cheapflights users on 6/9. 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.
Wed 7/911:59 pmONT - NAS
1 stop11h 46mJetBlue
Wed 7/1610:07 amNAS - ONT
1 stop14h 52mJetBlue
Deal found 6/9$531
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/126:53 pmONT - SXM
2 stops17h 12mAmerican Airlines
Thu 7/172:15 pmSXM - ONT
1 stop10h 23mAmerican Airlines
Deal found 6/11$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 June 12, 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

Wed 10/1

12:59 am-3:37 pm

2 stops11h 38m

San Juan Luis Munoz Marin Intl

Mon 10/6

9:07 am-8:54 pm

2 stops14h 47m

$343

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 9/16

5:05 pm-1:23 pm

2 stops17h 18m

San Juan Luis Munoz Marin Intl

Sat 9/27

12:55 pm-7:42 pm

1 stop9h 47m

$365

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sun 9/7

10:56 pm-2:53 pm

1 stop12h 57m

San Juan Luis Munoz Marin Intl

Sat 9/13

12:50 pm-9:29 pm

1 stop11h 39m

$410

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Thu 9/18

6:04 am-8:38 pm

1 stop11h 34m

San Juan Luis Munoz Marin Intl

Mon 9/22

1:05 am-12:32 pm

2 stops14h 27m

$413

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Tue 9/2

5:45 am-7:45 pm

2 stops11h 00m

San Juan Luis Munoz Marin Intl

Wed 9/10

8:00 am-7:35 pm

2 stops14h 35m

$451

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 9/10

12:46 pm-12:46 pm

2 stops21h 00m

San Juan Luis Munoz Marin Intl

Thu 9/18

6:10 am-10:16 pm

2 stops19h 06m

$480

OntarioSantiago de los Caballeros

ONT - STI

ONTSTI

Ontario

Tue 9/16

10:56 pm-6:03 pm

1 stop16h 07m

Santiago de los Caballeros

Fri 9/26

12:48 pm-9:29 pm

1 stop11h 41m

$495

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

Mon 7/28

10:28 pm-11:01 am

1 stop9h 33m

Punta Cana

Wed 8/13

2:20 pm-10:48 pm

2 stops11h 28m

$497

OntarioPunta Cana

ONT - PUJ

ONTPUJ

Ontario

Sun 9/28

10:56 pm-3:25 pm

1 stop13h 29m

Punta Cana

Wed 10/1

11:30 am-9:29 pm

1 stop12h 59m

$503

OntarioOranjestad

ONT - AUA

ONTAUA

Ontario

Fri 7/25

11:59 pm-3:45 pm

1 stop12h 46m

Oranjestad Reina Beatrix

Thu 7/31

12:20 pm-9:59 pm

1 stop12h 39m

$517

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, 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 June 12, 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 June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,925 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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 Delta ($183), JetBlue ($194), and American Airlines ($219).

  • 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$73Average$390FlexibilityNo cancel feeOn-time62%
DeltaCheapest$278Average$640FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$322Average$617FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$353Average$695FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$409Average$570FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$490Average$687FlexibilityNo cancel feeOn-time62%

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