HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$109+ Cheap flights from Puerto Rico to Islip (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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
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

Keep the following information in mind while searching for Puerto Rico to Islip flight deals. Data was last updated August 20, 2025.

Round-trip from

$228
(CheapOair)

One-way from

$109
(CheapOair)

Popular in

August

Cheapest in

February

Average price

$270
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. 10% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find 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 August 20, 2025.

This CheapOair deal was found by Cheapflights users on 8/19. 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.
Fri 9/123:39 amSJU - ISP
1 stop7h 16mFrontier
Mon 9/225:05 pmISP - SJU
1 stop6h 54mFrontier
Deal found 8/19$228
This CheapOair deal was found by Cheapflights users on 8/19. 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 9/113:39 amSJU - ISP
1 stop7h 01mFrontier
Sun 9/1411:25 amISP - SJU
1 stop12h 34mFrontier
Deal found 8/19$238
This Frontier deal was found by Cheapflights users on 8/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/138:00 amSJU - ISP
1 stop8h 23mFrontier
Sat 9/205:05 pmISP - SJU
1 stop9h 29mFrontier
Deal found 8/19$245
This CheapOair deal was found by Cheapflights users on 8/19. 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.
Mon 8/253:55 amSJU - ISP
1 stop20h 04mFrontier
Tue 9/26:05 amISP - SJU
1 stop13h 03mFrontier
Deal found 8/19$268
This CheapOair deal was found by Cheapflights users on 8/19. 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.
Fri 8/298:13 pmSJU - ISP
1 stop22h 25mFrontier
Mon 9/11:11 pmISP - SJU
1 stop10h 32mFrontier
Deal found 8/19$278
This CheapOair deal was found by Cheapflights users on 8/18. 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.
Thu 8/218:13 pmSJU - ISP
1 stop13h 00mFrontier
Sun 8/247:43 pmISP - SJU
1 stop7h 07mFrontier
Deal found 8/18$284
This Cheapflightsfares deal was found by Cheapflights users on 8/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/113:39 amSJU - ISP
1 stop7h 01mFrontier
Fri 9/195:05 pmISP - SJU
1 stop6h 54mFrontier
Deal found 8/18$288
This Cheapflightsfares deal was found by Cheapflights users on 8/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/223:39 amSJU - ISP
1 stop7h 01mFrontier
Sat 9/275:05 pmISP - SJU
1 stop6h 54mFrontier
Deal found 8/20$291
This Frontier deal was found by Cheapflights users on 8/20. 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 9/43:39 amSJU - ISP
1 stop7h 01mFrontier
Mon 9/85:05 pmISP - SJU
1 stop9h 29mFrontier
Deal found 8/20$294
This CheapOair deal was found by Cheapflights users on 8/18. 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 8/198:13 pmSJU - ISP
1 stop27h 28mFrontier
Sat 8/237:33 pmISP - SJU
1 stop7h 17mFrontier
Deal found 8/18$304

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 August 20, 2025.
Use the filters below to find and compare flights from Puerto Rico to Islip that are best for you.

Fly from

Puerto Rico

Fly to

Islip

Route

Depart

Return

Price

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 9/26

3:39 am-10:55 am

1 stop7h 16m

Islip Long Island

Mon 9/29

5:05 pm-11:59 pm

1 stop6h 54m

$228

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 9/13

8:00 am-4:23 pm

1 stop8h 23m

Islip Long Island

Mon 9/22

5:05 pm-2:34 am

1 stop9h 29m

$228

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 10/3

9:07 am-10:55 am

1 stop25h 48m

Islip Long Island

Tue 10/7

9:37 pm-12:00 pm

1 stop14h 23m

$228

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 9/12

9:07 am-10:55 am

1 stop25h 48m

Islip Long Island

Wed 9/17

11:35 am-8:02 am

1 stop20h 27m

$228

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 9/19

8:00 am-4:27 pm

1 stop8h 27m

Islip Long Island

Tue 9/23

11:25 am-2:34 am

1 stop15h 09m

$228

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 9/26

4:42 pm-10:55 am

1 stop18h 13m

Islip Long Island

Tue 9/30

11:25 am-8:31 pm

1 stop9h 06m

$228

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 10/25

7:58 pm-8:59 am

1 stop13h 01m

Islip Long Island

Mon 11/10

4:58 pm-2:54 am

1 stop8h 56m

$228

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 9/27

8:00 am-4:23 pm

1 stop8h 23m

Islip Long Island

Sun 9/28

11:25 am-11:59 pm

1 stop12h 34m

$228

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 9/29

8:00 am-4:27 pm

1 stop8h 27m

Islip Long Island

Sat 10/4

5:05 pm-2:34 am

1 stop9h 29m

$228

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 9/13

8:00 am-4:23 pm

1 stop8h 23m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 17 results
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

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

Currently, January is the cheapest month in which you can book a flight from Puerto Rico to Islip (average of $108). Flying from Puerto Rico to Islip in November is currently the most expensive (average of $213). 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?

    There are many flights that can get you from Puerto Rico to Islip in 7h 16m. Fly via Frontier to get the fastest option. Puerto Rico and Islip are separated by a distance of 1599 mi.

  • 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?

    Currently, January is the cheapest month in which you can book a flight from Puerto Rico to Islip (average of $108). Flying from Puerto Rico to Islip in November is currently the most expensive (average of $213). 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
Southampton

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.

Alternative routes for Puerto Rico to Islip

See prices for flight routes from nearby airports that may be better suited for you.
Luis Munoz Marin Intl to John F Kennedy Intl flights
Santo Domingo to John F Kennedy Intl flights
Luis Munoz Marin Intl to Newark flights
Santo Domingo to Newark flights
Luis Munoz Marin Intl to LaGuardia flights
Santiago de los Caballeros to Newark flights
Santiago de los Caballeros to John F Kennedy Intl flights
Port of Spain to John F Kennedy Intl flights
Santo Domingo to LaGuardia flights
Montego Bay to John F Kennedy Intl flights
Kingston to John F Kennedy Intl flights
Santiago de los Caballeros to LaGuardia flights
Punta Cana to John F Kennedy Intl flights
Bridgetown to John F Kennedy Intl flights
Punta Cana to Newark flights
Aguadilla to John F Kennedy Intl flights
St. John's to John F Kennedy Intl flights
Montego Bay to Newark flights
Port of Spain to LaGuardia flights
Port of Spain to Newark flights
Kingston to Newark flights
Kingston to LaGuardia flights
Simpson Bay to John F Kennedy Intl flights
Luis Munoz Marin Intl to Buffalo flights
Simpson Bay to Newark flights
Luis Munoz Marin Intl to Islip flights
Montego Bay to LaGuardia flights
Nassau to John F Kennedy Intl flights
Oranjestad to John F Kennedy Intl flights
Oranjestad to Newark flights
St. George's to John F Kennedy Intl flights
Ponce to John F Kennedy Intl flights
Luis Munoz Marin Intl to White Plains flights
Luis Munoz Marin Intl to Rochester flights
Willemstad to John F Kennedy Intl flights
Punta Cana to LaGuardia flights
Nassau to Newark flights
Fort-de-France to John F Kennedy Intl flights
Pointe-à-Pitre to John F Kennedy Intl flights
Saint Thomas Island to John F Kennedy Intl flights
Fort-de-France to Newark flights
Nassau to LaGuardia flights
Castries to John F Kennedy Intl flights
Aguadilla to Newark flights
Simpson Bay to LaGuardia flights
Bridgetown to LaGuardia flights
Pointe-à-Pitre to Newark flights
Fort-de-France to LaGuardia flights
Oranjestad to LaGuardia flights

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.