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Caribbean

$172+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SJU
Apr 24 — May 11
Fri 4/24
Fri 5/1
1 adult, Economy
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Cheap 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 March 25, 2026.

This United Airlines deal was found by Cheapflights users on 3/24. 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.
Mon 10/195:00 am
ONT
-
SJU
1 stop9h 30m
United Airlines
Tue 10/272:46 pm
SJU
-
ONT
1 stop9h 35m
United Airlines
Deal found 3/24$354
This Frontier deal was found by Cheapflights users on 3/24. 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 4/187:44 pm
ONT
-
PUJ
2 stops14h 26m
Frontier
Sat 4/2512:02 pm
PUJ
-
ONT
2 stops22h 24m
Frontier
Deal found 3/24$355
This United Airlines deal was found by Cheapflights users on 3/24. 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.
Mon 5/45:00 am
ONT
-
SJU
1 stop9h 38m
United Airlines
Fri 5/87:20 am
SJU
-
ONT
2 stops18h 15m
United Airlines
Deal found 3/24$367
This United Airlines deal was found by Cheapflights users on 3/22. 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 11/127:00 am
ONT
-
SJU
1 stop10h 00m
United Airlines
Wed 11/182:25 pm
SJU
-
ONT
1 stop9h 55m
United Airlines
Deal found 3/22$377
This Frontier deal was found by Cheapflights users on 3/21. 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 4/139:02 pm
ONT
-
PUJ
2 stops13h 08m
Frontier
Sat 4/1811:07 am
PUJ
-
ONT
2 stops23h 19m
Frontier
Deal found 3/21$379
This Delta deal was found by Cheapflights users on 3/20. 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 4/1810:15 pm
ONT
-
SJU
1 stop10h 30m
Delta
Fri 4/2412:55 pm
SJU
-
ONT
1 stop11h 05m
Delta
Deal found 3/20$388
This American Airlines deal was found by Cheapflights users on 3/24. 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 8/226:00 am
ONT
-
MBJ
1 stop8h 17m
American Airlines
Fri 8/2810:25 am
MBJ
-
ONT
1 stop13h 03m
American Airlines
Deal found 3/24$392
This United Airlines deal was found by Cheapflights users on 3/20. 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.
Fri 4/31:43 pm
ONT
-
MBJ
1 stop24h 02m
United Airlines
Sat 4/182:40 pm
MBJ
-
ONT
1 stop9h 10m
United Airlines
Deal found 3/20$399
This United Airlines deal was found by Cheapflights users on 3/20. 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 5/56:00 am
ONT
-
MBJ
1 stop29h 30m
United Airlines
Tue 5/122:40 pm
MBJ
-
ONT
1 stop9h 18m
United Airlines
Deal found 3/20$401
This American Airlines deal was found by Cheapflights users on 3/20. 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.
Fri 5/110:26 pm
ONT
-
SJU
1 stop19h 25m
American Airlines
Wed 5/67:25 am
SJU
-
ONT
1 stop16h 42m
American Airlines
Deal found 3/20$402
This Priceline deal was found by Cheapflights users on 3/24. 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.
Sat 5/910:50 am
ONT
-
MBJ
2 stops23h 21m
Frontier
Tue 5/121:16 pm
MBJ
-
ONT
2 stops20h 19m
Frontier
Deal found 3/24$411
This United Airlines deal was found by Cheapflights users on 3/22. 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 4/257:00 am
ONT
-
SJU
2 stops13h 50m
United Airlines
Thu 4/301:00 am
SJU
-
ONT
2 stops14h 22m
United Airlines
Deal found 3/22$411

Find flight deals from Ontario to Caribbean

Keep the following information in mind while searching for Ontario to Caribbean flight deals. Data was last updated March 25, 2026.

Round-trip from

$354
(Delta)

One-way from

$177
(Delta)

Popular in

December

Cheapest in

October

Average price

$495
From Ontario to Caribbean
Search Deals
One-way flight from Ontario to Caribbean
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 25, 2026.
Use the filters below to find and compare flights from Ontario to Caribbean that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Tue 5/5

6:59 pm-3:10 pm

2 stops18h 11m

Montego Bay Sangster Intl

Tue 5/12

2:40 pm-9:58 pm

1 stop9h 18m

$392

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Sat 8/22

7:02 pm-12:20 pm

2 stops15h 18m

Montego Bay Sangster Intl

Fri 8/28

1:35 pm-9:29 am

2 stops21h 54m

$397

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Fri 5/8

9:55 pm-10:25 am

1 stop9h 30m

San Juan Luis Munoz Marin Intl

Fri 5/15

5:35 am-3:15 pm

1 stop12h 40m

$446

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Wed 7/22

1:05 pm-12:45 am

1 stop8h 40m

San Juan Luis Munoz Marin Intl

Sat 8/1

5:00 am-7:15 pm

1 stop17h 15m

$482
Quickest round-trip

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Sat 4/4

5:10 am-3:45 pm

1 stop8h 35m

Montego Bay Sangster Intl

Thu 4/16

1:52 pm-10:31 pm

1 stop10h 39m

$488

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Sun 4/26

5:10 am-12:50 pm

2 stops29h 40m

Montego Bay Sangster Intl

Thu 4/30

2:40 pm-9:41 am

2 stops21h 01m

$507

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Mon 5/4

1:30 pm-11:43 am

2 stops20h 13m

Montego Bay Sangster Intl

Fri 5/8

2:40 pm-9:58 pm

1 stop9h 18m

$507

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Sat 4/25

5:10 am-3:45 pm

1 stop8h 35m

Montego Bay Sangster Intl

Wed 4/29

4:12 pm-12:22 pm

2 stops22h 10m

$507

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Sat 4/4

5:10 am-3:45 pm

1 stop8h 35m

Montego Bay Sangster Intl

Sat 4/18

2:40 pm-12:20 pm

2 stops23h 40m

$507

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Fri 4/10

1:43 pm-3:45 pm

1 stop24h 02m

Montego Bay Sangster Intl

Sat 4/18

2:40 pm-9:50 pm

1 stop9h 10m

$510

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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 $141). Flying from Ontario to Caribbean in November is currently the most expensive (average of $286). 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.

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 March 25, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited 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
4,332 reviews

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,332 reviews
Southwest
8.0
Very good
4,332 reviews

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,327 reviews
Southwest
8.0
Very good
4,332 reviews

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
United Airlines
7.4
Good
9,477 reviews
Southwest
8.0
Very good
4,332 reviews

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
JetBlue
7.2
Good
2,905 reviews
Southwest
8.0
Very good
4,332 reviews

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
American Airlines
7.1
Good
11,494 reviews
Southwest
8.0
Very good
4,332 reviews

Food

7.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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 9h 30m. 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 United Airlines ($142), Southwest ($178), and American Airlines ($195).

  • 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 $141). Flying from Ontario to Caribbean in November is currently the most expensive (average of $286). 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 March 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$137Average$467FlexibilityNo cancel feeOn-time62%
DeltaCheapest$292Average$826FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$321Average$626FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$365Average$659FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$421Average$607FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$445Average$621FlexibilityNo cancel feeOn-time63%

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