HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$168+ Cheap flights from Puerto Rico to Islip, NY (ISP)

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Aug 16 — Aug 231
Sun 8/16
Sun 8/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Puerto Rico to Islip with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Puerto Rico to Islip

Cheapest flights from Puerto Rico to Islip
Explore the most affordable flight options available from Puerto Rico to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.

This FlightHub deal was found by Cheapflights users on 7/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:31 pm
SJU
-
ISP
1 stop15h 02m
Frontier
Thu 10/14:13 pm
ISP
-
SJU
1 stop15h 45m
Frontier
Deal found 7/17$373
This Frontier deal was found by Cheapflights users on 7/16. 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.
Thu 10/13:00 am
SJU
-
ISP
1 stop6h 33m
Frontier
Mon 10/124:13 pm
ISP
-
SJU
1 stop9h 40m
Frontier
Deal found 7/16$376
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:11 pm
SJU
-
ISP
1 stop21h 42m
Frontier
Mon 9/77:46 pm
ISP
-
SJU
1 stop29h 10m
Frontier
Deal found 7/16$377
This Frontier deal was found by Cheapflights users on 7/16. 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.
Thu 10/82:58 am
SJU
-
ISP
1 stop6h 35m
Frontier
Mon 10/124:13 pm
ISP
-
SJU
1 stop9h 40m
Frontier
Deal found 7/16$396
This Frontier deal was found by Cheapflights users on 7/16. 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.
Thu 9/33:10 am
SJU
-
ISP
1 stop6h 43m
Frontier
Tue 9/810:57 am
ISP
-
SJU
1 stop8h 55m
Frontier
Deal found 7/16$416
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:11 pm
SJU
-
ISP
1 stop21h 42m
Multiple Airlines
Mon 9/78:43 pm
ISP
-
SJU
2 stops28h 13m
Multiple Airlines
Deal found 7/16$431
This Frontier deal was found by Cheapflights users on 7/16. 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.
Wed 9/233:00 am
SJU
-
ISP
1 stop6h 33m
Frontier
Sun 9/274:13 pm
ISP
-
SJU
1 stop9h 37m
Frontier
Deal found 7/16$440
This CheapOair deal was found by Cheapflights users on 7/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:45 pm
SJU
-
ISP
2 stops28h 37m
Multiple Airlines
Thu 10/14:13 pm
ISP
-
SJU
1 stop15h 45m
Multiple Airlines
Deal found 7/17$458

Find flight deals from Puerto Rico to Islip

Keep the following information in mind while searching for Puerto Rico to Islip flight deals. Data was last updated July 17, 2026.

Round-trip from

$376
(Frontier)

One-way from

$168
(Frontier)

Popular in

March

Cheapest in

October

Average price

$320
From Puerto Rico to Islip Long Island
Search Deals
One-way flight from Puerto Rico to Islip Long Island
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Puerto Rico to Islip 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 July 17, 2026.
Use the filters below to find and compare flights from Puerto Rico to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 9/18

6:31 pm-9:33 am

1 stop15h 02m

Islip Long Island

Thu 10/1

4:13 pm-7:58 am

1 stop15h 45m

$373

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 9/4

12:11 pm-9:53 am

1 stop21h 42m

Islip Long Island

Mon 9/7

7:46 pm-12:56 am

1 stop29h 10m

$377
Quickest round-trip

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 8/29

3:10 am-9:53 am

1 stop6h 43m

Islip Long Island

Mon 8/31

10:57 am-7:52 pm

1 stop8h 55m

$390

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 10/8

2:58 am-9:33 am

1 stop6h 35m

Islip Long Island

Mon 10/12

4:13 pm-1:53 am

1 stop9h 40m

$396

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Wed 9/23

3:00 am-9:33 am

1 stop6h 33m

Islip Long Island

Sun 9/27

4:13 pm-1:50 am

1 stop9h 37m

$440

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 9/18

6:45 pm-11:22 pm

2 stops28h 37m

Islip Long Island

Thu 10/1

4:13 pm-7:58 am

1 stop15h 45m

$458

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 9/10

3:00 am-9:33 am

1 stop6h 33m

Islip Long Island

Sun 9/13

4:13 pm-1:50 am

1 stop9h 37m

$461

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 9/4

6:00 am-4:25 pm

2 stops10h 25m

Islip Long Island

Mon 9/7

1:15 pm-11:50 pm

2 stops10h 35m

$519
Cheapest one-way

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Wed 9/2

8:57 pm-9:53 am

1 stop12h 56m

$168

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 10/31

3:55 am-9:33 am

1 stop6h 38m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight from Puerto Rico to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Puerto Rico 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 Puerto Rico to Islip

No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Puerto Rico to Islip. 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 into for flights to Islip from Puerto Rico?

    If you book a flight to Islip from Puerto Rico, you will be flying to Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip.

  • How long is the flight from Puerto Rico to Islip, New York?

    For as low as $373, Frontier can have you in Islip, New York from Puerto Rico in 15h 02m. There are 1599 mi between Puerto Rico and Islip, New York.

  • What are the cheapest airlines to fly from Puerto Rico to Islip, New York one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $119. JetBlue flights start at $174 while deals on Southwest start at $192 one-way.

  • Can I find deals for flights from Puerto Rico to Islip that include hotel bookings?

    Yes. In addition to deals on Puerto Rico to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Puerto Rico to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Puerto Rico to Islip.

  • Can I find deals for business class flights from Puerto Rico to Islip?

    Yes. Cheapflights offers flight deals from Puerto Rico to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights