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Cheap flights from Ontario to Caribbean Islands from $128

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Caribbean Islands departing on 1/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Caribbean Islands

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:39 pm - 1:17 pmONT-SJU
14h 38m2 stops
United Airlines Logo
8:10 am - 5:43 pmSJU-ONT
13h 33m2 stops
$283United Airlines
Find Deal
Mon, Jan 12 - Thu, Jan 22
Multiple Airlines Logo
7:00 am - 12:35 pmONT-SJU
49h 35m2 stops
Multiple Airlines Logo
7:44 pm - 1:48 pmSJU-ONT
22h 04m1 stop
$286Multiple Airlines
Find Deal
Sat, Jan 10 - Sat, Jan 17
Frontier Logo
8:31 am - 6:34 amONT-SJU
18h 03m1 stop
Frontier Logo
7:04 pm - 1:48 pmSJU-ONT
46h 44m2 stops
$331Frontier
Find Deal
Mon, Jan 12 - Fri, Jan 16
American Airlines Logo
11:59 pm - 1:22 pmONT-NAS
10h 23m2 stops
American Airlines Logo
7:45 am - 10:48 pmNAS-ONT
18h 03m2 stops
$397American Airlines
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Thu, Jan 29 - Wed, Feb 4
American Airlines Logo
7:30 pm - 3:45 pmONT-SDQ
16h 15m2 stops
American Airlines Logo
4:47 pm - 9:08 amSDQ-ONT
20h 21m2 stops
$415American Airlines
Find Deal
Sun, Jan 25 - Sun, Feb 1
Frontier Logo
1:37 pm - 3:31 pmONT-MBJ
22h 54m2 stops
Frontier Logo
4:51 pm - 11:59 pmMBJ-ONT
34h 08m2 stops
$434Frontier
Find Deal
Sat, Feb 14 - Sat, Feb 21
Southwest Logo
2:25 pm - 2:55 pmONT-STT
20h 30m2 stops
Southwest Logo
2:10 pm - 11:35 pmSTT-ONT
13h 25m2 stops
$571Southwest
Find Deal
Sun, Feb 8 - Fri, Feb 13
Delta Logo
10:20 pm - 12:42 pmONT-STT
10h 22m1 stop
Delta Logo
3:10 pm - 9:05 pmSTT-ONT
9h 55m1 stop
$595Delta
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Sun, Feb 22 - Thu, Feb 26
Delta Logo
10:30 pm - 3:05 pmONT-STT
12h 35m1 stop
Delta Logo
3:10 pm - 9:05 pmSTT-ONT
9h 55m1 stop
$596Delta
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Thu, Jan 22 - Wed, Feb 4
Southwest Logo
3:40 pm - 1:45 pmONT-PLS
19h 05m2 stops
Southwest Logo
2:40 pm - 11:20 pmPLS-ONT
11h 40m2 stops
$665Southwest
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Mon, Feb 16 - Fri, Feb 20

JetBlue flights from Ontario to Caribbean Islands

Our best JetBlue deals on Ontario to Caribbean Islands flight tickets
JetBlue
May 3
ONT11:25 pmOntario
10h 24m
1 stop
SJU12:49 pmSan Juan Luis Munoz Marin Intl
May 8
SJU1:50 pmSan Juan Luis Munoz Marin Intl
11h 19m
1 stop
ONT10:09 pmOntario
$310
Find similar
JetBlue
May 2
ONT11:25 pmOntario
10h 24m
1 stop
SJU12:49 pmSan Juan Luis Munoz Marin Intl
May 14
SJU1:50 pmSan Juan Luis Munoz Marin Intl
11h 19m
1 stop
ONT10:09 pmOntario
$336
Find similar
JetBlue
May 10
ONT11:25 pmOntario
10h 24m
1 stop
SJU12:49 pmSan Juan Luis Munoz Marin Intl
May 16
SJU1:50 pmSan Juan Luis Munoz Marin Intl
11h 19m
1 stop
ONT10:09 pmOntario
$342
Find similar

American Airlines flights from Ontario to Caribbean Islands

Our best American Airlines deals on Ontario to Caribbean Islands flight tickets
American Airlines
Feb 24
ONT10:40 pmOntario
10h 20m
1 stop
SJU1:00 pmSan Juan Luis Munoz Marin Intl
Feb 26
SJU7:30 amSan Juan Luis Munoz Marin Intl
20h 28m
1 stop
ONT11:58 pmOntario
$361
Find similar
American Airlines
Jan 18
ONT4:45 pmOntario
14h 03m
2 stops
SJU10:48 amSan Juan Luis Munoz Marin Intl
Jan 24
SJU7:07 amSan Juan Luis Munoz Marin Intl
15h 13m
2 stops
ONT6:20 pmOntario
$396
Find similar
American Airlines
Jan 29
ONT11:59 pmOntario
10h 23m
2 stops
NAS1:22 pmNassau Intl
Feb 4
NAS7:45 amNassau Intl
18h 03m
2 stops
ONT10:48 pmOntario
$397
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 3, 2025.
Use the filters below to find and compare flights from Ontario to Caribbean Islands that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 1/12

6:39 pm-1:17 pm

2 stops14h 38m

San Juan Luis Munoz Marin Intl

Thu 1/22

8:10 am-5:43 pm

2 stops13h 33m

$283

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Sat 1/10

7:00 am-12:35 pm

2 stops49h 35m

San Juan Luis Munoz Marin Intl

Sat 1/17

7:44 pm-1:48 pm

1 stop22h 04m

$286

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

Mon 1/12

8:31 am-6:34 am

1 stop18h 03m

San Juan Luis Munoz Marin Intl

Fri 1/16

7:04 pm-1:48 pm

2 stops46h 44m

$331

OntarioNassau

ONT - NAS

ONTNAS

Ontario

Thu 1/29

11:59 pm-1:22 pm

2 stops10h 23m

Nassau Intl

Wed 2/4

7:45 am-10:48 pm

2 stops18h 03m

$397

OntarioSanto Domingo

ONT - SDQ

ONTSDQ

Ontario

Sun 1/25

7:30 pm-3:45 pm

2 stops16h 15m

Santo Domingo Las Americas

Sun 2/1

4:47 pm-9:08 am

2 stops20h 21m

$415

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

Sat 2/14

1:37 pm-3:31 pm

2 stops22h 54m

Montego Bay Sangster Intl

Sat 2/21

4:51 pm-11:59 pm

2 stops34h 08m

$434

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Sun 2/8

2:25 pm-2:55 pm

2 stops20h 30m

Saint Thomas Island Cyril E King

Fri 2/13

2:10 pm-11:35 pm

2 stops13h 25m

$571

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Sun 2/22

10:20 pm-12:42 pm

1 stop10h 22m

Saint Thomas Island Cyril E King

Thu 2/26

3:10 pm-9:05 pm

1 stop9h 55m

$595

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

Thu 1/22

10:30 pm-3:05 pm

1 stop12h 35m

Saint Thomas Island Cyril E King

Wed 2/4

3:10 pm-9:05 pm

1 stop9h 55m

$596

OntarioProvidenciales

ONT - PLS

ONTPLS

Ontario

Mon 2/16

3:40 pm-1:45 pm

2 stops19h 05m

Providenciales

Fri 2/20

2:40 pm-11:20 pm

2 stops11h 40m

$665

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Caribbean Islands from

How to get the cheapest flight ticket from Ontario to Caribbean Islands

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Caribbean Islands?

The month of October is, on average, the cheapest month to fly to Caribbean Islands from Ontario, with most prices found around $391. The month of February is another great option to travel to Caribbean Islands, with average flight prices from Ontario averaging around $472.

What is the cheapest day to depart on your flight to Caribbean Islands?

The cheapest day to depart from Ontario to Caribbean Islands is on a Tuesday. Travelers who choose to depart for Caribbean Islands on a Tuesday will often find tickets for as low as $413. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $672. These prices are subject to change though, so be sure to set up a Price Alert for flights to Caribbean Islands.

What is the cheapest time of day to depart on your flight to Caribbean Islands?

According to our data, the cheapest time of day to fly to Caribbean Islands is in the evening. momondo users have found flights departing from Ontario to Caribbean Islands in the evening for as low as $532. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the afternoon because they tend to be around $735. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Caribbean Islands?

You are more likely to see cheaper flights to Caribbean Islands from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Caribbean Islands for around $592 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Caribbean Islands from Ontario for as low as $494 on momondo.

Can stopping save me money on Ontario to Caribbean Islands flights?

No. A direct flight is the cheapest option for a flight between Ontario to Caribbean Islands.

Cheap Ontario to Caribbean Islands flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Caribbean Islands

Fastest flight time

8h 10m

Direct flights

None
The fastest flight from Ontario to Caribbean Islands takes 8h 10m
There are no direct flights from Ontario to Caribbean Islands. There are no popular flight routes from Ontario to Caribbean Islands.
Search flight deals

  • When did momondo last update prices for flights from Ontario Airport to Caribbean Islands?

    Prices for flights from Ontario Airport to Caribbean Islands refresh daily.

  • How many operators does momondo search for flights from Ontario Airport to Caribbean Islands?

  • How old do you have to be to fly from Ontario Airport to Caribbean Islands?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Caribbean Islands.

  • What documentation or ID do you need to fly to Caribbean Islands?

    The travel and health documents required for your trip to Caribbean Islands can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Caribbean Islands. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Ontario to Caribbean Islands?

Best airlines flying from Ontario to Caribbean Islands

Compare and see reviews for airlines that fly from Ontario to Caribbean Islands with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $73Free CancellationRating
5.8
3,091 reviews
Search Frontier flights
DeltaPriceFrom $138Free CancellationRating
7.9
8,011 reviews
Search Delta flights
United AirlinesPriceFrom $355Free CancellationRating
7.4
9,065 reviews
Search United Airlines flights
American AirlinesPriceFrom $365Free CancellationRating
7.2
11,046 reviews
Search American Airlines flights
SouthwestPriceFrom $480Free CancellationRating
8.0
4,254 reviews
Search Southwest flights
JetBluePriceFrom $522Free CancellationRating
7.2
2,900 reviews
Search JetBlue flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Caribbean Islands?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Caribbean Islands. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to Caribbean Islands with flexible booking policies on momondo?

Flights from Ontario to Caribbean Islands with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Caribbean Islands?

Once all potential Ontario to Caribbean Islands flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Caribbean Islands right now. Can momondo alert me if prices change?

Price alerts on flights to Caribbean Islands from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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