HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$106+ 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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Apr 19 — Apr 261
Sun 4/19
Sun 4/26
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 March 20, 2026.

This CheapOair deal was found by Cheapflights users on 3/17. 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 4/177:15 am
SJU
-
ISP
1 stop12h 21m
Frontier
Sun 4/198:31 pm
ISP
-
SJU
1 stop17h 56m
Frontier
Deal found 3/17$212
This CheapOair deal was found by Cheapflights users on 3/17. 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.
Wed 4/293:19 pm
SJU
-
ISP
1 stop18h 14m
Frontier
Fri 5/14:07 pm
ISP
-
SJU
1 stop9h 54m
Frontier
Deal found 3/17$232
This CheapOair deal was found by Cheapflights users on 3/17. 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.
Thu 4/236:30 am
SJU
-
ISP
1 stop26h 43m
Frontier
Sun 4/264:07 pm
ISP
-
SJU
1 stop21h 59m
Frontier
Deal found 3/17$244
This CheapOair deal was found by Cheapflights users on 3/19. 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.
Thu 4/94:40 pm
SJU
-
ISP
1 stop8h 46m
Frontier
Mon 4/134:01 pm
ISP
-
SJU
1 stop7h 28m
Frontier
Deal found 3/19$247
This CheapOair deal was found by Cheapflights users on 3/18. 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.
Sat 4/49:41 pm
SJU
-
ISP
1 stop21h 23m
Frontier
Sun 4/125:45 am
ISP
-
SJU
1 stop18h 20m
Frontier
Deal found 3/18$254
This CheapOair deal was found by Cheapflights users on 3/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:35 pm
SJU
-
ISP
1 stop7h 48m
Frontier
Thu 4/98:36 pm
ISP
-
SJU
1 stop23h 24m
Frontier
Deal found 3/16$264
This CheapOair deal was found by Cheapflights users on 3/18. 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.
Tue 3/3111:32 am
SJU
-
ISP
1 stop13h 49m
Frontier
Tue 4/75:43 pm
ISP
-
SJU
1 stop15h 35m
Frontier
Deal found 3/18$272
This CheapOair deal was found by Cheapflights users on 3/18. 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 4/39:10 pm
SJU
-
ISP
1 stop21h 29m
Frontier
Tue 4/78:00 am
ISP
-
SJU
1 stop29h 29m
Frontier
Deal found 3/18$274
This CheapOair deal was found by Cheapflights users on 3/17. 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.
Thu 6/46:09 pm
SJU
-
ISP
1 stop15h 56m
Frontier
Wed 6/1710:03 am
ISP
-
SJU
1 stop9h 07m
Frontier
Deal found 3/17$276
This CheapOair deal was found by Cheapflights users on 3/15. 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.
Mon 4/64:35 pm
SJU
-
ISP
1 stop28h 17m
Frontier
Sun 4/127:59 pm
ISP
-
SJU
1 stop17h 27m
Frontier
Deal found 3/15$299

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 March 20, 2026.

Round-trip from

$212
(CheapOair)

One-way from

$106
(CheapOair)

Popular in

March

Cheapest in

October

Average price

$282
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. 3% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 20, 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
Quickest round-trip

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 4/17

7:15 am-7:36 pm

1 stop12h 21m

Islip Long Island

Sun 4/19

4:07 pm-10:48 pm

1 stop6h 41m

$212

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 4/30

10:54 am-9:13 am

1 stop22h 19m

Islip Long Island

Mon 5/4

4:07 pm-2:01 am

1 stop9h 54m

$212

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 5/28

6:09 pm-10:05 am

1 stop15h 56m

Islip Long Island

Thu 6/4

11:00 am-11:22 pm

1 stop12h 22m

$232

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 5/5

3:33 pm-10:05 am

1 stop18h 32m

Islip Long Island

Sat 5/9

11:00 am-2:08 am

1 stop15h 08m

$232

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 5/14

5:39 pm-6:14 pm

1 stop24h 35m

Islip Long Island

Tue 5/19

5:38 pm-2:08 am

1 stop8h 30m

$232

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Wed 4/29

10:54 am-9:33 am

1 stop22h 39m

Islip Long Island

Fri 5/1

8:31 pm-11:29 pm

1 stop26h 58m

$232

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 5/8

3:33 pm-10:05 am

1 stop18h 32m

Islip Long Island

Tue 5/12

5:38 pm-10:43 pm

1 stop29h 05m

$232

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 5/5

3:03 am-10:05 am

1 stop7h 02m

Islip Long Island

Sun 5/10

11:00 am-8:04 am

1 stop21h 04m

$244

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 5/11

6:00 am-11:00 am

1 stop29h 00m

Islip Long Island

Wed 5/13

11:00 am-2:08 am

1 stop15h 08m

$247

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 4/6

4:35 pm-12:23 am

1 stop7h 48m

Islip Long Island

Tue 4/7

5:43 pm-2:05 pm

1 stop20h 22m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/19

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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

What is the cheapest month to book a flight from Puerto Rico to Islip, New York?

Currently, October is the cheapest month in which you can book a flight from Puerto Rico to Islip, New York (average of $54). Flying from Puerto Rico to Islip, New York in August is currently the most expensive (average of $118). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 $212, Frontier can have you in Islip, New York from Puerto Rico in 12h 21m. There are 1599 mi between Puerto Rico and Islip, New York.

  • 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.

  • What is the cheapest month to book a flight from Puerto Rico to Islip, New York?

    Currently, October is the cheapest month in which you can book a flight from Puerto Rico to Islip, New York (average of $54). Flying from Puerto Rico to Islip, New York in August is currently the most expensive (average of $118). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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.