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Islip

$91+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This CheapOair deal was found by Cheapflights users on 1/26. 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.
Thu 2/2610:57 am
SJU
-
ISP
1 stop28h 42m
Frontier
Mon 3/28:23 am
ISP
-
SJU
1 stop17h 30m
Frontier
Deal found 1/26$182
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Thu 4/3011:07 am
SJU
-
ISP
1 stop22h 06m
Frontier
Thu 5/74:07 pm
ISP
-
SJU
1 stop17h 47m
Frontier
Deal found 1/26$195
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Sat 5/168:00 am
SJU
-
ISP
1 stop25h 13m
Frontier
Mon 5/184:07 pm
ISP
-
SJU
1 stop6h 41m
Frontier
Deal found 1/26$209
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Tue 3/311:07 am
SJU
-
ISP
1 stop22h 33m
Frontier
Thu 3/53:34 pm
ISP
-
SJU
1 stop10h 19m
Frontier
Deal found 1/26$214
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Fri 2/2712:27 pm
SJU
-
ISP
1 stop23h 39m
Frontier
Mon 3/28:23 am
ISP
-
SJU
1 stop15h 20m
Frontier
Deal found 1/26$217
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Tue 2/245:25 pm
SJU
-
ISP
1 stop16h 15m
Frontier
Thu 2/263:34 pm
ISP
-
SJU
1 stop10h 19m
Frontier
Deal found 1/26$224
This CheapOair deal was found by Cheapflights users on 1/25. 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 2/245:25 pm
SJU
-
ISP
1 stop16h 15m
Frontier
Sat 2/288:23 pm
ISP
-
SJU
1 stop29h 30m
Frontier
Deal found 1/25$226
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Thu 2/2610:57 am
SJU
-
ISP
1 stop21h 41m
Frontier
Fri 2/273:34 pm
ISP
-
SJU
1 stop8h 09m
Frontier
Deal found 1/26$230
This CheapOair deal was found by Cheapflights users on 1/26. 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.
Thu 2/52:17 pm
SJU
-
ISP
1 stop29h 21m
Frontier
Sun 2/87:53 pm
ISP
-
SJU
1 stop26h 43m
Frontier
Deal found 1/26$258
This CheapOair deal was found by Cheapflights users on 1/27. 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.
Fri 2/133:53 am
SJU
-
ISP
1 stop16h 35m
Frontier
Wed 2/182:03 pm
ISP
-
SJU
1 stop9h 40m
Frontier
Deal found 1/27$270

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$182
(CheapOair)

One-way from

$91
(CheapOair)

Popular in

August

Cheapest in

February

Average price

$202
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. 9% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 27, 2026.
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

Thu 4/23

3:19 pm-9:13 am

1 stop17h 54m

Islip Long Island

Mon 4/27

4:07 pm-2:01 am

1 stop9h 54m

$182

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 3/3

11:07 am-8:40 am

1 stop22h 33m

Islip Long Island

Thu 3/5

3:34 pm-2:53 am

1 stop10h 19m

$214

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 2/26

3:53 am-2:39 pm

1 stop11h 46m

Islip Long Island

Mon 3/2

2:17 pm-2:25 am

1 stop11h 08m

$217

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 2/26

10:57 am-2:39 pm

1 stop28h 42m

Islip Long Island

Sun 3/1

5:07 pm-2:25 am

1 stop8h 18m

$217

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 2/24

5:25 pm-8:40 am

1 stop16h 15m

Islip Long Island

Thu 2/26

3:34 pm-2:53 am

1 stop10h 19m

$224

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 2/24

5:25 pm-8:40 am

1 stop16h 15m

Islip Long Island

Sat 2/28

8:23 pm-2:53 am

1 stop29h 30m

$226

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 2/26

10:57 am-7:38 am

1 stop21h 41m

Islip Long Island

Fri 2/27

3:34 pm-12:43 am

1 stop8h 09m

$230

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 2/27

3:53 am-11:06 am

1 stop8h 13m

Islip Long Island

Mon 3/2

3:34 pm-9:54 am

1 stop17h 20m

$230

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 4/20

7:15 am-2:55 pm

1 stop7h 40m

$91

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 4/16

3:19 pm-9:13 am

1 stop17h 54m

$91

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 19 results
1
2
  • 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Juan Luis Munoz Marin Intl Airport-Islip, New York flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, January 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 $74). Flying from San Juan Luis Munoz Marin Intl Airport to Islip, New York in August is currently the most expensive (average of $120). 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 17h 54m. 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, January 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 $74). Flying from San Juan Luis Munoz Marin Intl Airport to Islip, New York in August is currently the most expensive (average of $120). 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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