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Islip

$90+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This CheapOair deal was found by Cheapflights users on 12/9. 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 12/249:37 pmSJU - ISP
1 stop14h 48mFrontier
Mon 1/56:25 amISP - SJU
1 stop17h 29mFrontier
Deal found 12/9$193
This CheapOair deal was found by Cheapflights users on 12/11. 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 12/239:37 pmSJU - ISP
1 stop20h 00mFrontier
Thu 1/16:00 amISP - SJU
1 stop25h 58mFrontier
Deal found 12/11$205
This CheapOair deal was found by Cheapflights users on 12/9. 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 12/2210:08 amSJU - ISP
1 stop14h 51mFrontier
Fri 1/26:00 amISP - SJU
1 stop17h 54mFrontier
Deal found 12/9$228
This Frontier deal was found by Cheapflights users on 12/10. 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 12/246:00 amSJU - ISP
1 stop11h 37mFrontier
Thu 1/112:20 pmISP - SJU
1 stop7h 07mFrontier
Deal found 12/10$245
This CheapOair deal was found by Cheapflights users on 12/9. 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 12/254:41 pmSJU - ISP
1 stop7h 50mFrontier
Mon 12/298:35 pmISP - SJU
1 stop29h 15mFrontier
Deal found 12/9$246
This CheapOair deal was found by Cheapflights users on 12/9. 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 12/2410:33 amSJU - ISP
1 stop7h 04mFrontier
Sun 1/48:24 pmISP - SJU
1 stop29h 26mFrontier
Deal found 12/9$248
This CheapOair deal was found by Cheapflights users on 12/10. 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 12/295:22 pmSJU - ISP
1 stop7h 37mFrontier
Mon 1/58:24 pmISP - SJU
1 stop13h 52mFrontier
Deal found 12/10$255
This CheapOair deal was found by Cheapflights users on 12/9. 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 12/184:41 pmSJU - ISP
1 stop7h 50mFrontier
Sun 12/212:04 pmISP - SJU
1 stop22h 30mFrontier
Deal found 12/9$260
This CheapOair deal was found by Cheapflights users on 12/8. 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
Tue 12/168:29 pmISP - SJU
1 stop29h 21mFrontier
Deal found 12/8$264
This CheapOair deal was found by Cheapflights users on 12/11. 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 12/209:58 pmSJU - ISP
1 stop22h 42mFrontier
Mon 12/298:35 pmISP - SJU
1 stop11h 48mFrontier
Deal found 12/11$265
This CheapOair deal was found by Cheapflights users on 12/9. 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 12/295:22 pmSJU - ISP
1 stop7h 37mFrontier
Fri 1/26:00 amISP - SJU
1 stop17h 54mFrontier
Deal found 12/9$269

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$181
(CheapOair)

One-way from

$90
(Frontier)

Popular in

August

Cheapest in

February

Average price

$260
Provider with most accurate pricing for San Juan Luis Munoz Marin Intl-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Juan Luis Munoz Marin Intl-Islip Long Island flights.
Search Deals
From San Juan Luis Munoz Marin Intl to Islip Long Island
Search Deals
One-way flight from San Juan Luis Munoz Marin Intl 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 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 December 12, 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

Tue 2/24

3:53 am-1:13 pm

1 stop10h 20m

Islip Long Island

Sat 2/28

12:01 pm-2:53 am

1 stop13h 52m

$181

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 3/3

3:53 am-1:13 pm

1 stop10h 20m

Islip Long Island

Mon 3/9

1:42 pm-2:09 pm

1 stop24h 27m

$181

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 2/26

5:25 pm-7:38 am

1 stop15h 13m

Islip Long Island

Sat 2/28

8:23 pm-2:53 am

1 stop29h 30m

$181

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 2/24

5:25 pm-1:13 pm

1 stop20h 48m

Islip Long Island

Sat 2/28

8:23 pm-2:53 am

1 stop29h 30m

$181

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 3/3

3:55 am-10:40 am

1 stop7h 45m

Islip Long Island

Wed 3/4

7:41 pm-9:55 am

1 stop13h 14m

$181

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

Wed 2/18

7:41 pm-9:55 am

1 stop13h 14m

$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-11:59 pm

1 stop27h 16m

$202

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

Sat 2/28

7:41 pm-9:55 am

1 stop13h 14m

$202

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Wed 12/24

10:33 am-4:37 pm

1 stop7h 04m

Islip Long Island

Thu 1/1

6:00 am-8:58 am

1 stop25h 58m

$205

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 12/23

9:37 pm-4:37 pm

1 stop20h 00m

Islip Long Island

Thu 1/1

6:00 am-8:58 am

1 stop25h 58m

$205

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 17 results
1
2

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 December.
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 $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 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?

    Frontier can get you from San Juan Luis Munoz Marin Intl Airport to Islip, New York in just under 10h 20m. Your travel time can differ by up to . The distance between San Juan Luis Munoz Marin Intl Airport and Islip, New York is about 1599 mi.

  • 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 $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.

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