$124+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Sep 16 — Sep 231
Round-trip
1 adult, Economy
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Find cheap flights from Puerto Rico to Islip with Cheapflights
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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
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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
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Cheapest flights from Puerto Rico to IslipExplore 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 17, 2026.
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 17, 2026.
This Frontier deal was found by Cheapflights users on 8/12. 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.
Thu 9/177:00 am -
1 stop9h 58m
Sat 9/195:43 pm -
1 stop8h 09m
Deal found 8/12![Frontier logo]()
$228
This FlightHub deal was found by Cheapflights users on 8/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:42 pm -
1 stop22h 16m
Thu 10/16:48 pm -
1 stop29h 10m
Deal found 8/12![Frontier logo]()
$247
This Frontier deal was found by Cheapflights users on 8/12. 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.
Sat 9/267:00 am -
1 stop9h 58m
Tue 9/295:43 pm -
1 stop8h 09m
Deal found 8/12![Frontier logo]()
$248
This Frontier deal was found by Cheapflights users on 8/13. 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.
Fri 11/67:05 am -
1 stop8h 28m
Sun 11/84:13 pm -
1 stop9h 37m
Deal found 8/13![Frontier logo]()
$302
This Priceline deal was found by Cheapflights users on 8/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:57 am -
1 stop14h 01m
Wed 9/235:43 pm -
1 stop8h 09m
Deal found 8/16![Frontier logo]()
$316
This Frontier deal was found by Cheapflights users on 8/13. 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.
Fri 9/187:00 am -
1 stop9h 58m
Sat 9/195:43 pm -
1 stop8h 09m
Deal found 8/13![Frontier logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:16 am -
1 stop8h 58m
Sat 9/125:43 pm -
1 stop8h 09m
Deal found 8/15![Frontier logo]()
$341
This Southwest deal was found by Cheapflights users on 8/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:30 am -
2 stops10h 40m
Wed 9/2312:55 pm -
1 stop9h 10m
Deal found 8/16![Southwest logo]()
$362
Best flights from Puerto Rico to IslipDiscover carefully curated flight deals from Puerto Rico to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 17, 2026.
Discover carefully curated flight deals from Puerto Rico to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 17, 2026.
This Frontier deal was found by Cheapflights users on 8/12. 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.
Thu 9/177:00 am -
1 stop9h 58m
Sat 9/195:43 pm -
1 stop8h 09m
Deal found 8/12![Frontier logo]()
$228
This Southwest deal was found by Cheapflights users on 8/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:30 am -
2 stops10h 40m
Wed 9/2312:55 pm -
1 stop9h 10m
Deal found 8/16![Southwest logo]()
$362
This FlightHub deal was found by Cheapflights users on 8/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:42 pm -
1 stop22h 16m
Thu 10/16:48 pm -
1 stop29h 10m
Deal found 8/12![Frontier logo]()
$247
This Frontier deal was found by Cheapflights users on 8/13. 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.
Sat 9/267:00 am -
1 stop9h 58m
Tue 9/295:43 pm -
1 stop8h 09m
Deal found 8/13![Frontier logo]()
$248
This Priceline deal was found by Cheapflights users on 8/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:57 am -
1 stop14h 01m
Wed 9/235:43 pm -
1 stop8h 09m
Deal found 8/16![Frontier logo]()
$316
This Frontier deal was found by Cheapflights users on 8/13. 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.
Fri 9/187:00 am -
1 stop9h 58m
Sat 9/195:43 pm -
1 stop8h 09m
Deal found 8/13![Frontier logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:16 am -
1 stop8h 58m
Sat 9/125:43 pm -
1 stop8h 09m
Deal found 8/15![Frontier logo]()
$341
Last-minute flights from Puerto Rico to IslipDiscover last-minute flight deals from Puerto Rico to Islip. Data last updated August 17, 2026 and is based on user searches.
Discover last-minute flight deals from Puerto Rico to Islip. Data last updated August 17, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:16 am -
1 stop8h 58m
Sat 9/125:43 pm -
1 stop8h 09m
Deal found 8/15![Frontier logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:37 pm -
2 stops23h 33m
Sat 9/125:43 pm -
1 stop8h 09m
Deal found 8/15![Multiple Airlines logo]()
$372
This Priceline deal was found by Cheapflights users on 8/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:57 am -
1 stop14h 01m
Wed 9/235:43 pm -
1 stop8h 09m
Deal found 8/16![Frontier logo]()
$316
This Southwest deal was found by Cheapflights users on 8/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:30 am -
2 stops10h 40m
Wed 9/2312:55 pm -
1 stop9h 10m
Deal found 8/16![Southwest logo]()
$362
This Frontier deal was found by Cheapflights users on 8/12. 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.
Thu 9/177:00 am -
1 stop9h 58m
Sat 9/195:43 pm -
1 stop8h 09m
Deal found 8/12![Frontier logo]()
$228
This FlightHub deal was found by Cheapflights users on 8/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:42 pm -
1 stop22h 16m
Thu 10/16:48 pm -
1 stop29h 10m
Deal found 8/12![Frontier logo]()
$247
This Frontier deal was found by Cheapflights users on 8/13. 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.
Fri 9/187:00 am -
1 stop9h 58m
Sat 9/195:43 pm -
1 stop8h 09m
Deal found 8/13![Frontier logo]()
$322
This Frontier deal was found by Cheapflights users on 8/12. 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.
Sat 9/267:00 am -
1 stop9h 58m
Tue 9/295:43 pm -
1 stop8h 09m
Deal found 8/12![Frontier logo]()
$248
One-way flights from Puerto Rico to IslipSearch for one-way flight options from Puerto Rico to Islip. Find affordable one-way fares based on user searches. Data last updated August 17, 2026.
Search for one-way flight options from Puerto Rico to Islip. Find affordable one-way fares based on user searches. Data last updated August 17, 2026.
This Frontier deal was found by Cheapflights users on 8/13. 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.
Wed 11/47:05 am -
1 stop8h 28m
Deal found 8/13![Frontier logo]()
$124
This Jetabroad deal was found by Cheapflights users on 8/13. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:43 pm -
1 stop13h 10m
Deal found 8/13![Frontier logo]()
$163
This JetBlue deal was found by Cheapflights users on 8/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:20 am -
1 stop7h 57m
Deal found 8/16![JetBlue logo]()
$173
This Frontier deal was found by Cheapflights users on 8/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/63:10 am -
1 stop6h 43m
Deal found 8/16![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:10 am -
2 stops13h 37m
Deal found 8/13![Multiple Airlines logo]()
$193
This Frontier deal was found by Cheapflights users on 8/13. 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.
Fri 8/283:10 am -
1 stop6h 43m
Deal found 8/13![Frontier logo]()
$198
This Frontier deal was found by Cheapflights users on 8/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:10 am -
1 stop6h 43m
Deal found 8/16![Frontier logo]()
$228
This Frontier deal was found by Cheapflights users on 8/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:57 pm -
1 stop12h 56m
Deal found 8/16![Frontier logo]()
$313
This JetBlue deal was found by Cheapflights users on 8/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:01 am -
1 stop7h 09m
Deal found 8/14![JetBlue logo]()
$318
This JetBlue deal was found by Cheapflights users on 8/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/219:52 am -
1 stop8h 35m
Deal found 8/16![JetBlue logo]()
$805
This JetBlue deal was found by Cheapflights users on 8/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/289:52 am -
1 stop8h 35m
Deal found 8/14![JetBlue logo]()
$1,053
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 August 17, 2026.
Round-trip from | $228 (Frontier) |
|---|---|
One-way from | $124 (Frontier) |
Popular in | August |
Cheapest in | October |
Average price | $361 |
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 17, 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
Cheapest round-trip
San JuanIslip
SJU San Juan Luis Munoz Marin Intl - ISP Islip Long Island
SJUISP
San Juan Luis Munoz Marin Intl
Thu 9/17
7:00 am-4:58 pm
1 stop9h 58m
Islip Long Island
Sat 9/19
5:43 pm-1:52 am
1 stop8h 09m
$228
San JuanIslip
SJU San Juan Luis Munoz Marin Intl - ISP Islip Long Island
SJUISP
San Juan Luis Munoz Marin Intl
Fri 9/18
6:42 pm-4:58 pm
1 stop22h 16m
Islip Long Island
Thu 10/1
6:48 pm-11:58 pm
1 stop29h 10m
$247
San JuanIslip
SJU San Juan Luis Munoz Marin Intl - ISP Islip Long Island
SJUISP
San Juan Luis Munoz Marin Intl
Sat 9/26
7:00 am-4:58 pm
1 stop9h 58m
Islip Long Island
Tue 9/29
5:43 pm-1:52 am
1 stop8h 09m
$248
San JuanIslip
SJU San Juan Luis Munoz Marin Intl - ISP Islip Long Island
SJUISP
San Juan Luis Munoz Marin Intl
Tue 9/15
2:57 am-4:58 pm
1 stop14h 01m
Islip Long Island
Wed 9/23
5:43 pm-1:52 am
1 stop8h 09m
$316
San JuanIslip
SJU San Juan Luis Munoz Marin Intl - ISP Islip Long Island
SJUISP
San Juan Luis Munoz Marin Intl
Fri 9/18
7:00 am-4:58 pm
1 stop9h 58m
Islip Long Island
Sat 9/19
5:43 pm-1:52 am
1 stop8h 09m
$322
Quickest round-trip
San JuanIslip
SJU San Juan Luis Munoz Marin Intl - ISP Islip Long Island
SJUISP
San Juan Luis Munoz Marin Intl
Sat 9/5
9:16 am-6:14 pm
1 stop8h 58m
Islip Long Island
Sat 9/12
5:43 pm-1:52 am
1 stop8h 09m
$341
San JuanIslip
SJU San Juan Luis Munoz Marin Intl - ISP Islip Long Island
SJUISP
San Juan Luis Munoz Marin Intl
Wed 9/16
10:30 am-9:10 pm
2 stops10h 40m
Islip Long Island
Wed 9/23
12:55 pm-10:05 pm
1 stop9h 10m
$362
Cheapest one-way
San JuanIslip
SJU San Juan Luis Munoz Marin Intl - ISP Islip Long Island
SJUISP
San Juan Luis Munoz Marin Intl
Tue 9/1
8:43 pm-9:53 am
1 stop13h 10m
$163
San JuanIslip
SJU San Juan Luis Munoz Marin Intl - ISP Islip Long Island
SJUISP
San Juan Luis Munoz Marin Intl
Sat 9/5
2:20 am-10:17 am
1 stop7h 57m
$173
Quickest one-way
San JuanIslip
SJU San Juan Luis Munoz Marin Intl - ISP Islip Long Island
SJUISP
San Juan Luis Munoz Marin Intl
Sun 9/6
3:10 am-9:53 am
1 stop6h 43m
$178
Showing 1-10 of 15 resultsSorted by cheapest first
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.
SJU-ISP
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
PR0-ISP
SJU-ISP
No data available for this route at this time. Please check back soon.
Related info for your journey
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