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Islip

$137+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Nov 12 — Nov 191
Wed 11/12
Wed 11/19
1 adult, Economy
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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 October 13, 2025.

Round-trip from

$294
(CheapOair)

One-way from

$137
(JetBlue)

Popular in

August

Cheapest in

February

Average price

$206
From Puerto Rico to Islip Long Island
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One-way flight from Puerto Rico to Islip Long Island
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Highest demand for flights based on searches. 10% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 October 13, 2025.

This CheapOair deal was found by Cheapflights users on 10/11. 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 12/1111:05 amSJU - ISP
1 stop10h 09mFrontier
Mon 12/152:57 pmISP - SJU
1 stop9h 00mFrontier
Deal found 10/11$294
This CheapOair deal was found by Cheapflights users on 10/12. 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 10/123:40 amSJU - ISP
1 stop6h 57mFrontier
Mon 10/204:58 pmISP - SJU
1 stop19h 02mFrontier
Deal found 10/12$334
This CheapOair deal was found by Cheapflights users on 10/12. 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 10/164:16 pmSJU - ISP
1 stop16h 48mFrontier
Sun 10/199:47 pmISP - SJU
1 stop28h 43mFrontier
Deal found 10/12$374
This CheapOair deal was found by Cheapflights users on 10/11. 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 10/141:17 pmSJU - ISP
1 stop7h 25mFrontier
Fri 10/174:58 pmISP - SJU
1 stop9h 32mFrontier
Deal found 10/11$424
This CheapOair deal was found by Cheapflights users on 10/11. 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 10/117:58 pmSJU - ISP
1 stop13h 01mFrontier
Sun 10/129:47 pmISP - SJU
1 stop11h 55mFrontier
Deal found 10/11$444
This Frontier deal was found by Cheapflights users on 10/12. 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.
Sun 10/199:19 pmSJU - ISP
1 stop13h 18mFrontier
Fri 10/244:58 pmISP - SJU
2 stops19h 18mFrontier
Deal found 10/12$445
This CheapOair deal was found by Cheapflights users on 10/11. 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 10/117:58 pmSJU - ISP
1 stop13h 01mFrontier
Mon 10/139:49 amISP - SJU
1 stop13h 45mFrontier
Deal found 10/11$464
This CheapOair deal was found by Cheapflights users on 10/11. 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 12/1111:05 amSJU - ISP
1 stop10h 09mFrontier
Tue 12/168:09 pmISP - SJU
1 stop26h 50mFrontier
Deal found 10/11$504
This Frontier deal was found by Cheapflights users on 10/13. 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.
Mon 12/159:30 pmSJU - ISP
2 stops22h 44mFrontier
Thu 12/185:45 amISP - SJU
1 stop10h 12mFrontier
Deal found 10/13$551
This Frontier deal was found by Cheapflights users on 10/12. 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 12/2411:05 amSJU - ISP
1 stop9h 16mFrontier
Thu 1/15:45 amISP - SJU
1 stop10h 12mFrontier
Deal found 10/12$581
This CheapOair deal was found by Cheapflights users on 10/13. 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 12/1711:05 amSJU - ISP
1 stop9h 09mFrontier
Sun 12/219:09 pmISP - SJU
1 stop11h 46mFrontier
Deal found 10/13$791

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 October 13, 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

Sat 12/6

11:02 am-7:06 pm

1 stop9h 04m

Islip Long Island

Sun 12/7

9:09 pm-2:50 am

1 stop28h 41m

$294

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 12/12

3:55 am-8:14 pm

1 stop17h 19m

Islip Long Island

Sun 12/14

8:01 pm-12:57 am

1 stop27h 56m

$294

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 11/17

10:39 pm-5:42 pm

1 stop20h 03m

Islip Long Island

Thu 11/20

10:02 am-12:32 pm

1 stop25h 30m

$294

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Wed 2/25

3:55 am-9:47 am

1 stop6h 52m

Islip Long Island

Sun 3/1

1:10 pm-11:37 pm

1 stop9h 27m

$294

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 10/31

2:19 pm-10:55 am

1 stop20h 36m

Islip Long Island

Wed 11/5

4:58 pm-2:54 am

1 stop8h 56m

$294

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 12/12

9:32 pm-8:14 pm

1 stop23h 42m

Islip Long Island

Mon 12/15

2:57 pm-12:57 am

1 stop9h 00m

$294

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 10/24

4:16 pm-11:53 am

1 stop19h 37m

Islip Long Island

Sun 10/26

9:47 pm-2:09 am

1 stop28h 22m

$294

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Wed 10/29

3:04 am-5:42 pm

1 stop14h 38m

Islip Long Island

Thu 11/20

10:02 am-9:12 pm

1 stop10h 10m

$294

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 10/23

5:03 pm-10:37 am

1 stop17h 34m

Islip Long Island

Mon 10/27

9:49 am-11:29 pm

1 stop13h 40m

$294

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 12/11

11:02 am-7:06 pm

1 stop9h 04m

Islip Long Island

Mon 12/15

2:57 pm-12:57 am

1 stop9h 00m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 20 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, October is the cheapest month in which you can book a flight from Puerto Rico to Islip (average of $51). Flying from Puerto Rico to Islip in August is currently the most expensive (average of $119). 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 9h 04m. 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, October is the cheapest month in which you can book a flight from Puerto Rico to Islip (average of $51). Flying from Puerto Rico to Islip in August is currently the most expensive (average of $119). 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

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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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