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Cheap flights from Ontario to Caribbean Islands from $146

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 11/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Frontier Logo
4:51 pm - 2:54 pmONT-SJU
18h 03m2 stops
Frontier Logo
3:55 am - 1:31 pmSJU-ONT
13h 36m2 stops
$311Frontier
Find Deal
lun., dic. 8 - dom., dic. 14
Frontier Logo
7:44 pm - 3:19 pmONT-SJU
15h 35m2 stops
Frontier Logo
9:00 am - 9:27 pmSJU-ONT
16h 27m2 stops
$320Frontier
Find Deal
dom., nov. 16 - mié., nov. 19
Multiple Airlines Logo
2:26 pm - 5:33 pmONT-SJU
23h 07m1 stop
Multiple Airlines Logo
7:00 am - 3:56 pmSJU-ONT
12h 56m1 stop
$324Multiple Airlines
Find Deal
lun., dic. 8 - dom., dic. 14
American Airlines Logo
7:00 am - 6:10 amONT-SJU
19h 10m1 stop
American Airlines Logo
8:20 am - 7:41 pmSJU-ONT
15h 21m1 stop
$350American Airlines
Find Deal
dom., nov. 2 - lun., nov. 3
United Airlines Logo
6:05 am - 9:26 pmONT-SJU
11h 21m1 stop
United Airlines Logo
7:45 am - 5:34 pmSJU-ONT
13h 49m2 stops
$355United Airlines
Find Deal
mar., nov. 11 - sáb., nov. 15
American Airlines Logo
10:34 pm - 1:43 pmONT-SJU
11h 09m2 stops
American Airlines Logo
3:51 pm - 10:29 pmSJU-ONT
10h 38m1 stop
$401American Airlines
Find Deal
dom., nov. 2 - lun., nov. 3
United Airlines Logo
7:00 am - 12:36 amONT-SJU
13h 36m2 stops
United Airlines Logo
2:05 am - 12:33 pmSJU-ONT
14h 28m2 stops
$410United Airlines
Find Deal
mar., nov. 11 - vie., nov. 14
Southwest Logo
8:55 pm - 2:55 pmONT-MBJ
15h 00m2 stops
Southwest Logo
1:50 pm - 10:05 pmMBJ-ONT
11h 15m2 stops
$607Southwest
Find Deal
mié., dic. 3 - mié., dic. 10
Delta Logo
1:20 pm - 4:34 pmONT-MBJ
24h 14m2 stops
Delta Logo
3:38 pm - 11:04 pmMBJ-ONT
10h 26m1 stop
$636Delta
Find Deal
jue., nov. 27 - jue., dic. 4
Delta Logo
5:05 pm - 11:50 amONT-STT
15h 45m2 stops
Delta Logo
1:15 pm - 10:09 pmSTT-ONT
11h 54m1 stop
$647Delta
Find Deal
mar., mar. 31 - mié., may. 6

Frontier flights from Ontario to Caribbean Islands

Our best Frontier deals on Ontario to Caribbean Islands flight tickets
Frontier
Dec 8
ONT4:51 pmOntario
18h 03m
2 stops
SJU2:54 pmSan Juan Luis Munoz Marin Intl
Dec 14
SJU3:55 amSan Juan Luis Munoz Marin Intl
13h 36m
2 stops
ONT1:31 pmOntario
$311
Find similar
Frontier
Nov 16
ONT7:44 pmOntario
15h 35m
2 stops
SJU3:19 pmSan Juan Luis Munoz Marin Intl
Nov 19
SJU9:00 amSan Juan Luis Munoz Marin Intl
16h 27m
2 stops
ONT9:27 pmOntario
$320
Find similar
Frontier
Dec 8
ONT4:51 pmOntario
18h 03m
2 stops
SJU2:54 pmSan Juan Luis Munoz Marin Intl
Dec 14
SJU9:32 pmSan Juan Luis Munoz Marin Intl
17h 25m
2 stops
ONT10:57 amOntario
$356
Find similar

JetBlue flights from Ontario to Caribbean Islands

Our best JetBlue deals on Ontario to Caribbean Islands flight tickets
JetBlue
Oct 15
ONT10:56 pmOntario
12h 58m
1 stop
SJU2:54 pmSan Juan Luis Munoz Marin Intl
Oct 17
SJU1:25 pmSan Juan Luis Munoz Marin Intl
11h 04m
1 stop
ONT9:29 pmOntario
$1,006
Find similar
JetBlue
Oct 18
ONT10:56 pmOntario
11h 02m
1 stop
SJU12:58 pmSan Juan Luis Munoz Marin Intl
Oct 20
SJU1:25 pmSan Juan Luis Munoz Marin Intl
11h 04m
1 stop
ONT9:29 pmOntario
$1,032
Find similar
JetBlue
Oct 15
ONT10:56 pmOntario
11h 32m
1 stop
SDQ1:28 pmSanto Domingo Las Americas
Oct 22
SDQ12:47 pmSanto Domingo Las Americas
11h 42m
1 stop
ONT9:29 pmOntario
$1,139
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 octubre 14, 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

lun. 12/8

4:51 pm-2:54 pm

2 stops18h 03m

San Juan Luis Munoz Marin Intl

dom. 12/14

3:55 am-1:31 pm

2 stops13h 36m

$311

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

dom. 11/16

7:44 pm-3:19 pm

2 stops15h 35m

San Juan Luis Munoz Marin Intl

mié. 11/19

9:00 am-9:27 pm

2 stops16h 27m

$320

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

lun. 12/8

2:26 pm-5:33 pm

1 stop23h 07m

San Juan Luis Munoz Marin Intl

dom. 12/14

7:00 am-3:56 pm

1 stop12h 56m

$324

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

dom. 11/2

7:00 am-6:10 am

1 stop19h 10m

San Juan Luis Munoz Marin Intl

lun. 11/3

8:20 am-7:41 pm

1 stop15h 21m

$350

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mar. 11/11

6:05 am-9:26 pm

1 stop11h 21m

San Juan Luis Munoz Marin Intl

sáb. 11/15

7:45 am-5:34 pm

2 stops13h 49m

$355

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

dom. 11/2

10:34 pm-1:43 pm

2 stops11h 09m

San Juan Luis Munoz Marin Intl

lun. 11/3

3:51 pm-10:29 pm

1 stop10h 38m

$401

OntarioSan Juan

ONT - SJU

ONTSJU

Ontario

mar. 11/11

7:00 am-12:36 am

2 stops13h 36m

San Juan Luis Munoz Marin Intl

vie. 11/14

2:05 am-12:33 pm

2 stops14h 28m

$410

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

mié. 12/3

8:55 pm-2:55 pm

2 stops15h 00m

Montego Bay Sangster Intl

mié. 12/10

1:50 pm-10:05 pm

2 stops11h 15m

$607

OntarioMontego Bay

ONT - MBJ

ONTMBJ

Ontario

jue. 11/27

1:20 pm-4:34 pm

2 stops24h 14m

Montego Bay Sangster Intl

jue. 12/4

3:38 pm-11:04 pm

1 stop10h 26m

$636

OntarioSaint Thomas Island

ONT - STT

ONTSTT

Ontario

mar. 3/31

5:05 pm-11:50 am

2 stops15h 45m

Saint Thomas Island Cyril E King

mié. 5/6

1:15 pm-10:09 pm

1 stop11h 54m

$647

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 $424. The month of April is another great option to travel to Caribbean Islands, with average flight prices from Ontario averaging around $478.

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 $596 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 $488 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

Direct flights

None
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
3,136 reviews
Search Frontier flights
DeltaPriceFrom $278Free CancellationRating
7.9
7,972 reviews
Search Delta flights
American AirlinesPriceFrom $365Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
United AirlinesPriceFrom $366Free CancellationRating
7.4
8,975 reviews
Search United Airlines flights
SouthwestPriceFrom $409Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
JetBluePriceFrom $573Free CancellationRating
7.2
2,905 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.

An easier way to manage your Caribbean Islands trip

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1 adult
jue. 11/13
jue. 11/20
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