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

Frontier, JetBlue, 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 41% of people opting to fly with this airline when traveling to Caribbean. Keep in mind that there are 14 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 2025, there are 3 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.

$98 Cheap Flights from Islip to Caribbean in 2025

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Find the cheapest flights from Islip, New York to Caribbean

Round-trip

One-way

Last minute

Cheap round-trip flights

7:33 pm - 2:50 amISP-SJU

7h 17m1 stop

3:39 am - 10:55 amSJU-ISP

7h 16m1 stop

$206Frontier

Find Deal

Sat, Aug 30 - Fri, Sep 5

5:05 pm - 11:59 pmISP-SJU

6h 54m1 stop

3:39 am - 10:55 amSJU-ISP

7h 16m1 stop

$214Frontier

Find Deal

Sat, Sep 13 - Fri, Sep 19

7:33 pm - 2:50 amISP-SJU

7h 17m1 stop

3:39 am - 10:40 amSJU-ISP

7h 01m1 stop

$215Frontier

Find Deal

Sat, Aug 30 - Thu, Sep 4

7:33 pm - 2:50 amISP-SJU

7h 17m1 stop

3:39 am - 10:55 amSJU-ISP

7h 16m1 stop

$216Frontier

Find Deal

Sat, Aug 30 - Fri, Sep 26

12:15 pm - 10:19 pmISP-SJU

9h 04m1 stop

5:05 am - 11:18 amSJU-ISP

7h 13m1 stop

$340JetBlue

Find Deal

Wed, Nov 12 - Tue, Nov 18

4:19 pm - 11:43 pmISP-SJU

7h 24m1 stop

6:00 am - 2:44 pmSJU-ISP

8h 44m1 stop

$380JetBlue

Find Deal

Sat, Sep 27 - Tue, Oct 7

8:00 am - 11:13 amISP-STT

27h 13m2 stops

2:43 pm - 11:41 pmSTT-ISP

8h 58m1 stop

$416

Find Deal

Wed, Aug 27 - Wed, Sep 3

8:00 am - 11:13 amISP-STT

27h 13m2 stops

2:43 pm - 11:41 pmSTT-ISP

8h 58m1 stop

$425

Find Deal

Wed, Aug 27 - Wed, Sep 3

6:00 am - 1:20 pmISP-NAS

7h 20m2 stops

2:20 pm - 8:10 pmNAS-ISP

5h 50m1 stop

$645Southwest

Find Deal

Mon, Sep 29 - Sat, Oct 4

6:00 am - 1:20 pmISP-NAS

7h 20m2 stops

2:20 pm - 9:35 pmNAS-ISP

7h 15m2 stops

$655Southwest

Find Deal

Mon, Sep 29 - Sat, Oct 4

Frontier flights from Islip, New York to Caribbean

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

Frontier

Aug 30

ISP7:33 pmIslip Long Island

7h 17m

1 stop

SJU2:50 amSan Juan Luis Munoz Marin Intl

Sep 5

SJU3:39 amSan Juan Luis Munoz Marin Intl

7h 16m

1 stop

ISP10:55 amIslip Long Island

$206

Find similar

Frontier

Sep 13

ISP5:05 pmIslip Long Island

6h 54m

1 stop

SJU11:59 pmSan Juan Luis Munoz Marin Intl

Sep 19

SJU3:39 amSan Juan Luis Munoz Marin Intl

7h 16m

1 stop

ISP10:55 amIslip Long Island

$214

Find similar

Frontier

Aug 30

ISP7:33 pmIslip Long Island

7h 17m

1 stop

SJU2:50 amSan Juan Luis Munoz Marin Intl

Sep 4

SJU3:39 amSan Juan Luis Munoz Marin Intl

7h 01m

1 stop

ISP10:40 amIslip Long Island

$215

Find similar

JetBlue flights from Islip, New York to Caribbean

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

JetBlue

Nov 12

ISP12:15 pmIslip Long Island

9h 04m

1 stop

SJU10:19 pmSan Juan Luis Munoz Marin Intl

Nov 18

SJU5:05 amSan Juan Luis Munoz Marin Intl

7h 13m

1 stop

ISP11:18 amIslip Long Island

$340

Find similar

JetBlue

Sep 27

ISP4:19 pmIslip Long Island

7h 24m

1 stop

SJU11:43 pmSan Juan Luis Munoz Marin Intl

Oct 7

SJU6:00 amSan Juan Luis Munoz Marin Intl

8h 44m

1 stop

ISP2:44 pmIslip Long Island

$380

Find similar

JetBlue

Nov 16

ISP12:15 pmIslip Long Island

4h 40m

1 stop

NAS4:55 pmNassau Intl

Nov 26

NAS1:21 pmNassau Intl

6h 11m

1 stop

ISP7:32 pmIslip Long Island

$476

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Sat 8/30

7:33 pm-2:50 am

1 stop7h 17m

San Juan Luis Munoz Marin Intl

Fri 9/5

3:39 am-10:55 am

1 stop7h 16m

$206

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Sat 9/13

5:05 pm-11:59 pm

1 stop6h 54m

San Juan Luis Munoz Marin Intl

Fri 9/19

3:39 am-10:55 am

1 stop7h 16m

$214

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Sat 8/30

7:33 pm-2:50 am

1 stop7h 17m

San Juan Luis Munoz Marin Intl

Thu 9/4

3:39 am-10:40 am

1 stop7h 01m

$215

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Sat 8/30

7:33 pm-2:50 am

1 stop7h 17m

San Juan Luis Munoz Marin Intl

Fri 9/26

3:39 am-10:55 am

1 stop7h 16m

$216

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Wed 11/12

12:15 pm-10:19 pm

1 stop9h 04m

San Juan Luis Munoz Marin Intl

Tue 11/18

5:05 am-11:18 am

1 stop7h 13m

$340

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Sat 9/27

4:19 pm-11:43 pm

1 stop7h 24m

San Juan Luis Munoz Marin Intl

Tue 10/7

6:00 am-2:44 pm

1 stop8h 44m

$380

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Wed 8/27

8:00 am-11:13 am

2 stops27h 13m

Saint Thomas Island Cyril E King

Wed 9/3

2:43 pm-11:41 pm

1 stop8h 58m

$416

IslipSaint Thomas Island

ISP - STT

ISPSTT

Islip Long Island

Wed 8/27

8:00 am-11:13 am

2 stops27h 13m

Saint Thomas Island Cyril E King

Wed 9/3

2:43 pm-11:41 pm

1 stop8h 58m

$425

IslipNassau

ISP - NAS

ISPNAS

Islip Long Island

Mon 9/29

6:00 am-1:20 pm

2 stops7h 20m

Nassau Intl

Sat 10/4

2:20 pm-8:10 pm

1 stop5h 50m

$645

IslipNassau

ISP - NAS

ISPNAS

Islip Long Island

Mon 9/29

6:00 am-1:20 pm

2 stops7h 20m

Nassau Intl

Sat 10/4

2:20 pm-9:35 pm

2 stops7h 15m

$655

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, November 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 $204. If you don’t want to visit Caribbean in November, then you should wait until February to fly from Islip, New York, when ticket prices are also cheap, with an average price of $210.

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

The cheapest day to depart from Islip, New York to Caribbean is on a Friday when prices can be found for as low as $260. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $734. These prices are subject to change though, so be sure to set up a Price Alert for flights to Caribbean.

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

In the evening is the cheapest time of day to fly from Islip, New York to Caribbean when you can find flight prices for as low as $208. Flying to Caribbean in the evening is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $390.

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

You could potentially save up to 26% 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

Best Price Found	$98
Fastest flight time	4h 40m
Direct flights	None
Airports in Caribbean	6 airports

The best one-way flight to Caribbean from Islip, New York in the past 72 hours is $98. The best round-trip flight deal from Islip, New York to Caribbean found on momondo in the last 72 hours is $206.

The fastest flight from Islip, New York to Caribbean takes 4h 40m

There are no direct flights from Islip, New York to Caribbean. Popular non-direct routes for this connection are Islip Long Island Airport - Punta Cana Airport and Islip Long Island Airport - San Juan Luis Munoz Marin Intl Airport.

There are 6 airports near Caribbean: Nassau Intl (NAS), Santo Domingo Las Americas (SDQ), Punta Cana (PUJ), Montego Bay Sangster Intl (MBJ), Oranjestad Reina Beatrix (AUA), San Juan Luis Munoz Marin Intl (SJU)

Search flight deals

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 2025, there are 3 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 $59	Free Cancellation	Rating 5.9 3,239 reviews	Search Frontier flights
JetBlue	PriceFrom $231	Free Cancellation	Rating 7.2 2,914 reviews	Search JetBlue flights
Southwest	PriceFrom $477	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest 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.