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Islip

$90+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Jan 4 — Jan 111
Sun 1/4
Sun 1/11
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 December 5, 2025.

This CheapOair deal was found by Cheapflights users on 12/3. 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 12/115:09 pmSJU - ISP
1 stop27h 25mFrontier
Wed 12/1712:37 pmISP - SJU
1 stop19h 21mFrontier
Deal found 12/3$214
This CheapOair deal was found by Cheapflights users on 12/3. 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 12/213:55 amSJU - ISP
1 stop16h 45mFrontier
Fri 1/26:00 amISP - SJU
1 stop17h 54mFrontier
Deal found 12/3$216
This CheapOair deal was found by Cheapflights users on 12/3. 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 12/185:09 pmSJU - ISP
1 stop20h 33mFrontier
Sat 1/107:56 pmISP - SJU
1 stop11h 58mFrontier
Deal found 12/3$218
This CheapOair deal was found by Cheapflights users on 12/3. 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 12/115:09 pmSJU - ISP
1 stop27h 25mFrontier
Sat 12/1310:19 amISP - SJU
1 stop15h 31mFrontier
Deal found 12/3$223
This CheapOair deal was found by Cheapflights users on 12/4. 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 12/223:55 amSJU - ISP
1 stop8h 30mFrontier
Fri 1/26:00 amISP - SJU
1 stop25h 58mFrontier
Deal found 12/4$228
This CheapOair deal was found by Cheapflights users on 12/3. 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 12/133:55 amSJU - ISP
1 stop7h 25mFrontier
Wed 12/1712:37 pmISP - SJU
1 stop19h 21mFrontier
Deal found 12/3$230
This CheapOair deal was found by Cheapflights users on 12/4. 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 12/225:22 pmSJU - ISP
1 stop7h 37mFrontier
Wed 12/315:27 pmISP - SJU
1 stop8h 23mFrontier
Deal found 12/4$238
This CheapOair deal was found by Cheapflights users on 12/3. 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 12/183:55 amSJU - ISP
1 stop16h 45mFrontier
Mon 12/226:25 amISP - SJU
1 stop17h 29mFrontier
Deal found 12/3$239
This CheapOair deal was found by Cheapflights users on 12/3. 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 12/83:55 amSJU - ISP
1 stop16h 39mFrontier
Sat 12/1310:19 amISP - SJU
1 stop15h 31mFrontier
Deal found 12/3$253
This CheapOair deal was found by Cheapflights users on 12/4. 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 12/153:55 amSJU - ISP
1 stop16h 39mFrontier
Thu 12/186:00 amISP - SJU
1 stop8h 31mFrontier
Deal found 12/4$256
This CheapOair deal was found by Cheapflights users on 12/3. 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 12/213:55 amSJU - ISP
1 stop10h 14mFrontier
Tue 12/306:25 amISP - SJU
1 stop25h 33mFrontier
Deal found 12/3$264

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 December 5, 2025.

Round-trip from

$180
(Frontier)

One-way from

$90
(Frontier)

Popular in

August

Cheapest in

February

Average price

$251
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. 11% potential increase in price ($27 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 December 2025
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 December 5, 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 2/27

3:55 am-10:40 am

1 stop7h 45m

Islip Long Island

Mon 3/2

1:10 pm-11:37 pm

1 stop9h 27m

$180

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 2/5

4:36 pm-8:47 pm

1 stop29h 11m

Islip Long Island

Mon 2/9

7:43 pm-9:55 am

1 stop13h 12m

$181

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 1/29

4:36 pm-8:47 pm

1 stop29h 11m

Islip Long Island

Mon 2/2

7:43 pm-11:59 pm

1 stop27h 16m

$181

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 3/12

5:00 am-7:11 pm

1 stop14h 11m

Islip Long Island

Sat 3/14

6:00 am-11:54 pm

1 stop17h 54m

$200

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 1/26

8:00 am-6:48 pm

1 stop11h 48m

Islip Long Island

Thu 1/29

7:43 pm-10:24 am

1 stop13h 41m

$202

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 2/13

3:55 am-10:40 am

1 stop7h 45m

Islip Long Island

Thu 2/19

10:42 am-9:55 am

1 stop22h 13m

$202

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 1/22

4:36 pm-8:47 pm

1 stop29h 11m

Islip Long Island

Mon 1/26

7:43 pm-3:26 pm

1 stop18h 43m

$202

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 2/24

3:55 am-10:40 am

1 stop7h 45m

Islip Long Island

Sun 3/1

5:03 pm-2:50 am

1 stop8h 47m

$215

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Wed 2/11

11:05 am-9:47 am

1 stop23h 42m

Islip Long Island

Fri 2/20

5:03 pm-11:31 pm

1 stop29h 28m

$216

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 1/30

8:00 am-8:47 pm

1 stop13h 47m

Islip Long Island

Mon 2/2

7:43 pm-11:59 pm

1 stop27h 16m

$216

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 19 results
1
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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

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 $51). 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 $180, Frontier can have you in Islip, New York from Puerto Rico in 7h 45m. 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 $51). 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

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Alternative routes for Puerto Rico to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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