What is the cheapest airline that flies from Islip Long Island to Caribbean?

JetBlue, Frontier, and Southwest are the most popular carriers operating from Islip Long Island to Caribbean

What airlines fly to Caribbean?

JetBlue, United Airlines and Delta are the top three most popular airlines that fly to Caribbean from Islip, New York according to our data. JetBlue is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Caribbean. Keep in mind that there are 12 different airlines that fly to Caribbean on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Islip Long Island Airport to Caribbean?

Prices for flights from Islip Long Island Airport to Caribbean were last updated today.

How many operators does momondo search for flights from Islip Long Island Airport to Caribbean?

As of July 2026, there are 4 operators available to choose from for flights from Islip Long Island Airport to Caribbean.

How old do you have to be to fly from Islip Long Island Airport to Caribbean?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to Caribbean.

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

The required travel and health documents for your Caribbean trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Caribbean. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$146 Cheap Flights from Islip, New York to Caribbean in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Islip, New York to Caribbean

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:28 pm - 12:56 am

ISP

SJU

34h 28m

2 stops

8:57 pm - 9:53 am

SJU

ISP

12h 56m

1 stop

$326Multiple Airlines

Fri, Aug 21 - Tue, Aug 25

10:57 am - 7:52 pm

ISP

SJU

8h 55m

1 stop

8:57 pm - 9:53 am

SJU

ISP

12h 56m

1 stop

$334Frontier

Tue, Aug 25 - Tue, Sep 1

10:57 am - 7:52 pm

ISP

SJU

8h 55m

1 stop

8:57 pm - 9:53 am

SJU

ISP

12h 56m

1 stop

$336Frontier

Wed, Aug 26 - Tue, Sep 1

10:57 am - 7:52 pm

ISP

SJU

8h 55m

1 stop

5:37 pm - 11:17 am

SJU

ISP

17h 40m

2 stops

$339Multiple Airlines

Tue, Aug 25 - Tue, Sep 1

10:57 am - 7:52 pm

ISP

SJU

8h 55m

1 stop

3:10 am - 9:53 am

SJU

ISP

6h 43m

1 stop

$345Frontier

Wed, Aug 26 - Wed, Aug 26

5:27 pm - 12:56 am

ISP

SJU

31h 29m

2 stops

8:57 pm - 9:53 am

SJU

ISP

12h 56m

1 stop

$348Multiple Airlines

Tue, Aug 25 - Tue, Sep 1

6:00 am - 5:22 pm

ISP

NAS

11h 22m

1 stop

3:02 pm - 9:49 pm

NAS

ISP

6h 47m

1 stop

$349JetBlue

Wed, Aug 5 - Tue, Aug 11

6:00 am - 12:37 pm

ISP

SXM

6h 37m

1 stop

1:42 pm - 9:44 pm

SXM

ISP

8h 02m

1 stop

$351JetBlue

Tue, Sep 1 - Fri, Sep 4

1:15 pm - 10:10 pm

ISP

SJU

8h 55m

2 stops

5:15 am - 4:55 pm

SJU

ISP

11h 40m

2 stops

$364Southwest

Thu, Aug 20 - Tue, Aug 25

6:05 am - 12:50 pm

ISP

PUJ

6h 45m

1 stop

2:15 pm - 9:05 pm

PUJ

ISP

6h 50m

1 stop

$546Southwest

Tue, Sep 22 - Wed, Sep 30

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Frontier flights from Islip, New York to Caribbean

Our best Frontier deals on Islip, New York to Caribbean flight tickets

Frontier

Aug 25

ISP10:57 amIslip Long Island

8h 55m

1 stop

SJU7:52 pmSan Juan Luis Munoz Marin Intl

Sep 1

SJU8:57 pmSan Juan Luis Munoz Marin Intl

12h 56m

1 stop

ISP9:53 amIslip Long Island

$334

Frontier

Aug 26

ISP10:57 amIslip Long Island

8h 55m

1 stop

SJU7:52 pmSan Juan Luis Munoz Marin Intl

Sep 1

SJU8:57 pmSan Juan Luis Munoz Marin Intl

12h 56m

1 stop

ISP9:53 amIslip Long Island

$336

Frontier

Aug 26

ISP10:57 amIslip Long Island

8h 55m

1 stop

SJU7:52 pmSan Juan Luis Munoz Marin Intl

Aug 26

SJU3:10 amSan Juan Luis Munoz Marin Intl

6h 43m

1 stop

ISP9:53 amIslip Long Island

$345

Southwest flights from Islip, New York to Caribbean

Our best Southwest deals on Islip, New York to Caribbean flight tickets

Southwest

Aug 25

ISP6:05 amIslip Long Island

10h 20m

2 stops

SJU4:25 pmSan Juan Luis Munoz Marin Intl

Sep 1

SJU11:50 amSan Juan Luis Munoz Marin Intl

9h 15m

2 stops

ISP9:05 pmIslip Long Island

$364

Southwest

Aug 13

ISP1:15 pmIslip Long Island

8h 55m

2 stops

SJU10:10 pmSan Juan Luis Munoz Marin Intl

Aug 18

SJU5:15 amSan Juan Luis Munoz Marin Intl

11h 40m

2 stops

ISP4:55 pmIslip Long Island

$436

Southwest

Aug 6

ISP1:15 pmIslip Long Island

8h 55m

2 stops

SJU10:10 pmSan Juan Luis Munoz Marin Intl

Aug 15

SJU8:20 amSan Juan Luis Munoz Marin Intl

11h 10m

1 stop

ISP7:30 pmIslip Long Island

$470

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Fri 8/21

2:28 pm-12:56 am

2 stops34h 28m

San Juan Luis Munoz Marin Intl

Tue 8/25

8:57 pm-9:53 am

1 stop12h 56m

$326

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Tue 8/25

10:57 am-7:52 pm

1 stop8h 55m

San Juan Luis Munoz Marin Intl

Tue 9/1

8:57 pm-9:53 am

1 stop12h 56m

$334

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Wed 8/26

10:57 am-7:52 pm

1 stop8h 55m

San Juan Luis Munoz Marin Intl

Tue 9/1

8:57 pm-9:53 am

1 stop12h 56m

$336

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Tue 8/25

10:57 am-7:52 pm

1 stop8h 55m

San Juan Luis Munoz Marin Intl

Tue 9/1

5:37 pm-11:17 am

2 stops17h 40m

$339

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Wed 8/26

10:57 am-7:52 pm

1 stop8h 55m

San Juan Luis Munoz Marin Intl

Wed 8/26

3:10 am-9:53 am

1 stop6h 43m

$345

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Tue 8/25

5:27 pm-12:56 am

2 stops31h 29m

San Juan Luis Munoz Marin Intl

Tue 9/1

8:57 pm-9:53 am

1 stop12h 56m

$348

IslipNassau

ISP - NAS

ISPNAS

Islip Long Island

Wed 8/5

6:00 am-5:22 pm

1 stop11h 22m

Nassau Intl

Tue 8/11

3:02 pm-9:49 pm

1 stop6h 47m

$349

IslipSimpson Bay

ISP - SXM

ISPSXM

Islip Long Island

Tue 9/1

6:00 am-12:37 pm

1 stop6h 37m

Simpson Bay Princess Juliana

Fri 9/4

1:42 pm-9:44 pm

1 stop8h 02m

$351

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Thu 8/20

1:15 pm-10:10 pm

2 stops8h 55m

San Juan Luis Munoz Marin Intl

Tue 8/25

5:15 am-4:55 pm

2 stops11h 40m

$364

Quickest round-trip

IslipPunta Cana

ISP - PUJ

ISPPUJ

Islip Long Island

Tue 9/22

6:05 am-12:50 pm

1 stop6h 45m

Punta Cana

Wed 9/30

2:15 pm-9:05 pm

1 stop6h 50m

$546

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to Caribbean

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

Prices

Airlines

What is the cheapest month to fly to Caribbean?

In general, July is the cheapest month to fly from Islip, New York to Caribbean. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you don’t want to visit Caribbean in July, then you should wait until January to fly from Islip, New York, when ticket prices are also cheap, with an average price of $106.

Can stopping save me money on Islip, New York to Caribbean flights?

You could potentially save up to 60% on your flight if you consider stops on a Islip, New York to Caribbean flight.

Cheap Islip, New York to Caribbean flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Caribbean

Fastest flight time	5h 20m
Direct flights	None

The fastest flight from Islip, New York to Caribbean takes 5h 20m

There are no direct flights from Islip, New York to Caribbean. There are no popular flight routes from Islip, New York to Caribbean.

Search flight deals

Frequently asked questions about flying from Islip, New York to Caribbean

When did momondo last update prices for flights from Islip Long Island Airport to Caribbean?
Prices for flights from Islip Long Island Airport to Caribbean were last updated today.
How many operators does momondo search for flights from Islip Long Island Airport to Caribbean?
As of July 2026, there are 4 operators available to choose from for flights from Islip Long Island Airport to Caribbean.
How old do you have to be to fly from Islip Long Island Airport to Caribbean?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to Caribbean.
What documentation or ID do you need to fly to Caribbean?
The required travel and health documents for your Caribbean trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Caribbean. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Islip, New York to Caribbean

Compare and see reviews for airlines that fly from Islip, New York to Caribbean with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $106	Free Cancellation	Rating 5.6 2,847 reviews	Search Frontier flights
JetBlue	PriceFrom $301	Free Cancellation	Rating 7.1 3,009 reviews	Search JetBlue flights
Southwest	PriceFrom $367	Free Cancellation	Rating 7.9 4,250 reviews	Search Southwest flights
Delta	PriceFrom $402	Free Cancellation	Rating 7.8 8,453 reviews	Search Delta flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Islip to Caribbean. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Caribbean from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Islip to Caribbean?

momondo provides multiple filters to help you find the best flight to Caribbean from Islip. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Islip to Caribbean flights. All you need is a valid email address and we will do the rest; it is that quick and easy.