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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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
May 21 — May 281
Thu 5/21
Thu 5/28
1 adult, Economy
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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 April 21, 2026.

This Priceline deal was found by Cheapflights users on 4/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:30 am
SJU
-
ISP
1 stop28h 30m
Frontier
Fri 5/86:59 pm
ISP
-
SJU
1 stop19h 02m
Frontier
Deal found 4/19$196
This Frontier deal was found by Cheapflights users on 4/19. 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.
Wed 5/133:03 am
SJU
-
ISP
1 stop7h 24m
Frontier
Sun 5/1711:12 am
ISP
-
SJU
1 stop11h 31m
Frontier
Deal found 4/19$212
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:59 am
SJU
-
ISP
1 stop25h 06m
Frontier
Wed 5/1311:00 am
ISP
-
SJU
1 stop21h 04m
Frontier
Deal found 4/20$231
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
SJU
-
ISP
1 stop28h 05m
Frontier
Thu 5/711:12 am
ISP
-
SJU
1 stop14h 56m
Frontier
Deal found 4/20$241
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:09 pm
SJU
-
ISP
1 stop15h 56m
Frontier
Tue 6/94:41 pm
ISP
-
SJU
1 stop9h 28m
Frontier
Deal found 4/20$244
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:09 pm
SJU
-
ISP
1 stop23h 08m
Frontier
Tue 6/94:41 pm
ISP
-
SJU
1 stop9h 28m
Frontier
Deal found 4/20$247
This Frontier deal was found by Cheapflights users on 4/19. 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.
Tue 8/256:00 am
SJU
-
ISP
1 stop9h 56m
Frontier
Mon 8/3110:48 am
ISP
-
SJU
1 stop12h 41m
Frontier
Deal found 4/19$256
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/53:03 am
SJU
-
ISP
1 stop7h 02m
Frontier
Tue 6/234:41 pm
ISP
-
SJU
1 stop9h 28m
Frontier
Deal found 4/20$261
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/173:03 am
SJU
-
ISP
1 stop7h 02m
Frontier
Fri 5/2211:00 am
ISP
-
SJU
1 stop15h 08m
Frontier
Deal found 4/20$289
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/126:16 pm
SJU
-
ISP
1 stop15h 47m
Frontier
Wed 6/177:50 pm
ISP
-
SJU
1 stop28h 47m
Frontier
Deal found 4/20$291
This CheapOair deal was found by Cheapflights users on 4/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:16 pm
SJU
-
ISP
1 stop15h 47m
Frontier
Mon 8/247:50 pm
ISP
-
SJU
1 stop28h 33m
Frontier
Deal found 4/20$293

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 April 21, 2026.

Round-trip from

$196
(Priceline)

One-way from

$106
(Frontier)

Popular in

March

Cheapest in

October

Average price

$275
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 ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 21, 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 5/8

8:59 am-10:05 am

1 stop25h 06m

Islip Long Island

Wed 5/13

11:00 am-8:04 am

1 stop21h 04m

$231

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 6/12

6:16 pm-10:03 am

1 stop15h 47m

Islip Long Island

Wed 6/17

7:50 pm-12:37 am

1 stop28h 47m

$291

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 8/14

6:16 pm-10:03 am

1 stop15h 47m

Islip Long Island

Mon 8/24

7:50 pm-12:23 am

1 stop28h 33m

$293

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 6/12

6:00 am-10:03 am

1 stop28h 03m

Islip Long Island

Sun 6/14

10:48 am-7:55 am

1 stop21h 07m

$311

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 6/13

3:06 am-10:03 am

1 stop6h 57m

Islip Long Island

Sat 6/20

10:48 am-11:29 pm

1 stop12h 41m

$321

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 8/27

3:06 am-10:03 am

1 stop6h 57m

Islip Long Island

Mon 8/31

10:48 am-11:29 pm

1 stop12h 41m

$321
Quickest round-trip

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sun 8/23

3:06 am-10:03 am

1 stop6h 57m

Islip Long Island

Tue 9/1

4:41 pm-1:54 am

1 stop9h 13m

$321

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 6/15

3:06 am-3:56 pm

1 stop12h 50m

Islip Long Island

Fri 6/19

10:48 am-11:29 pm

1 stop12h 41m

$366

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 8/29

4:05 pm-10:03 am

1 stop17h 58m

Islip Long Island

Thu 9/3

10:48 am-1:54 am

1 stop15h 06m

$396

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 7/17

3:06 am-10:03 am

1 stop6h 57m

Islip Long Island

Tue 7/21

4:41 pm-1:54 am

1 stop9h 13m

$406

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/18

Showing 1-10 of 24 resultsSorted by cheapest first
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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 $279, Frontier can have you in Islip, New York from Puerto Rico in 13h 52m. 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.

See more FAQs

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