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$137+ Cheap flights from Luis Munoz Marin Intl (SJU) 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
nov. 27 — dic. 41
jue. 11/27
jue. 12/4
1 adult, Economy
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Find flight deals from Luis Munoz Marin Intl to Islip

Cheapest flights from Luis Munoz Marin Intl to Islip
Explore the most affordable flight options available from Luis Munoz Marin Intl to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 28, 2025.

This CheapOair deal was found by Cheapflights users on 10/26. 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.
sáb. 12/68:00 amSJU - ISP
1 stop8h 10mFrontier
lun. 12/86:00 amISP - SJU
1 stop16h 56mFrontier
Deal found 10/26$286
This CheapOair deal was found by Cheapflights users on 10/26. 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.
vie. 12/54:24 pmSJU - ISP
1 stop23h 46mFrontier
lun. 12/86:00 amISP - SJU
1 stop16h 56mFrontier
Deal found 10/26$291
This Frontier deal was found by Cheapflights users on 10/26. 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.
mar. 12/233:55 amSJU - ISP
1 stop13h 42mFrontier
jue. 1/16:00 amISP - SJU
1 stop8h 31mFrontier
Deal found 10/26$294
This CheapOair deal was found by Cheapflights users on 10/26. 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.
jue. 11/137:30 amSJU - ISP
1 stop26h 24mFrontier
sáb. 11/154:58 pmISP - SJU
1 stop8h 56mFrontier
Deal found 10/26$296
This Frontier deal was found by Cheapflights users on 10/26. 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.
mié. 12/243:55 amSJU - ISP
1 stop8h 30mFrontier
jue. 1/16:00 amISP - SJU
1 stop8h 31mFrontier
Deal found 10/26$297
This CheapOair deal was found by Cheapflights users on 10/26. 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.
vie. 11/1410:39 pmSJU - ISP
1 stop12h 58mFrontier
mié. 11/194:58 pmISP - SJU
1 stop23h 59mFrontier
Deal found 10/26$311
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
mar. 11/113:44 pmSJU - ISP
1 stop19h 53mMultiple Airlines
sáb. 11/154:58 pmISP - SJU
2 stops23h 21mMultiple Airlines
Deal found 10/27$314
This CheapOair deal was found by Cheapflights users on 10/27. 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.
dom. 11/912:29 pmSJU - ISP
1 stop23h 08mFrontier
vie. 11/149:39 amISP - SJU
1 stop28h 03mFrontier
Deal found 10/27$316
This CheapOair deal was found by Cheapflights users on 10/26. 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.
dom. 11/27:30 amSJU - ISP
1 stop26h 39mFrontier
mié. 11/54:58 pmISP - SJU
1 stop27h 26mFrontier
Deal found 10/26$336
This CheapOair deal was found by Cheapflights users on 10/27. 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.
mié. 11/53:59 amSJU - ISP
1 stop14h 43mFrontier
lun. 11/174:58 pmISP - SJU
1 stop8h 56mFrontier
Deal found 10/27$341

Cheap flight deals from Luis Munoz Marin Intl to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Luis Munoz Marin Intl (SJU) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated octubre 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$274
(JetBlue)

One-way from

$137
(JetBlue)

Popular in

August

Cheapest in

February

Average price

$196
Provider with most accurate pricing for San Juan Luis Munoz Marin Intl-Islip Long Island flight deals.
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Provider most trusted by Cheapflights users for San Juan Luis Munoz Marin Intl-Islip Long Island flights.
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From San Juan Luis Munoz Marin Intl to Islip Long Island
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One-way flight from San Juan Luis Munoz Marin Intl to Islip Long Island
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Highest demand for flights based on searches. 11% potential increase in price ($26 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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Cheapflights Fare Finder

 
Customize your flight search to find flights from Luis Munoz Marin Intl 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 octubre 28, 2025.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to Islip that are best for you.

Fly from

Luis Munoz Marin Intl

Fly to

Islip

Route

Depart

Return

Price

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

jue. 2/5

6:00 am-11:35 am

1 stop6h 35m

Islip Long Island

dom. 2/8

9:40 am-6:35 pm

1 stop7h 55m

$274

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

jue. 11/13

3:59 am-10:37 am

1 stop7h 38m

Islip Long Island

jue. 11/20

10:02 am-5:57 pm

1 stop6h 55m

$291

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

vie. 12/5

7:00 am-11:59 pm

1 stop17h 59m

Islip Long Island

sáb. 12/6

10:19 am-2:50 am

1 stop15h 31m

$291

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

vie. 12/5

4:24 pm-3:10 pm

1 stop23h 46m

Islip Long Island

lun. 12/8

6:00 am-11:56 pm

1 stop16h 56m

$291

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

mar. 12/23

3:55 am-4:37 pm

1 stop13h 42m

Islip Long Island

jue. 1/1

6:00 am-3:31 pm

1 stop8h 31m

$294

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

jue. 11/13

3:59 am-10:37 am

1 stop7h 38m

Islip Long Island

dom. 11/16

9:27 pm-2:54 am

1 stop28h 27m

$296

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

mié. 12/24

3:55 am-11:25 am

1 stop8h 30m

Islip Long Island

jue. 1/1

6:00 am-3:31 pm

1 stop8h 31m

$297

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

vie. 11/14

3:59 am-10:37 am

1 stop7h 38m

Islip Long Island

lun. 11/17

4:58 pm-2:54 am

1 stop8h 56m

$311

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

vie. 11/14

10:39 pm-10:37 am

1 stop12h 58m

Islip Long Island

mié. 11/19

4:58 pm-5:57 pm

1 stop23h 59m

$311

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

mié. 1/14

9:37 pm-2:43 pm

1 stop18h 06m

Islip Long Island

lun. 1/19

3:34 pm-9:55 am

1 stop17h 21m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 20 results
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Compare providers for flights from Luis Munoz Marin Intl to Islip

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Luis Munoz Marin Intl to Islip in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Islip, New York flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Juan Luis Munoz Marin Intl Airport-Islip, New York flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Juan Luis Munoz Marin Intl Airport-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Juan Luis Munoz Marin Intl Airport-Islip, New York flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Juan Luis Munoz Marin Intl Airport-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Luis Munoz Marin Intl to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport to Islip

What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to Islip, New York?

Currently, February is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Islip, New York (average of $76). Flying from San Juan Luis Munoz Marin Intl Airport to Islip, New York 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 Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl?

    For a flight from San Juan Luis Munoz Marin Intl to Islip, you will be flying into Long Island. Islip Long Island (ISP) is just 7.2 mi from the center of the city. Long Island is the only Islip airport and it handles 0 inbound flights from San Juan Luis Munoz Marin Intl per day. 0 airlines have flights to Islip Long Island from San Juan Luis Munoz Marin Intl on a regular basis.

  • How long is the flight from San Juan Luis Munoz Marin Intl Airport to Islip, New York?

    JetBlue and Frontier can get you from San Juan Luis Munoz Marin Intl Airport to Islip, New York in just under 6h 35m. Your travel time can differ by up to 1h 03m. The distance between San Juan Luis Munoz Marin Intl Airport and Islip, New York is about 1599 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Luis Munoz Marin Intl to Islip that include hotel bookings?

    Yes. In addition to deals on Luis Munoz Marin Intl to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Luis Munoz Marin Intl to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luis Munoz Marin Intl to Islip.

  • Can I find deals for business class flights from Luis Munoz Marin Intl to Islip?

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl 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 San Juan Luis Munoz Marin Intl Airport to Islip, New York?

    Currently, February is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Islip, New York (average of $76). Flying from San Juan Luis Munoz Marin Intl Airport to Islip, New York 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

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