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Islip

$87+ Cheap flights from San Juan 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap flight deals from San Juan to Islip

Cheapest flights from San Juan to Islip
Explore the most affordable flight options available from San Juan to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

This CheapOair deal was found by Cheapflights users on 12/22. 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 12/3110:08 amSJU - ISP
1 stop13h 09mFrontier
Mon 1/58:24 pmISP - SJU
1 stop29h 26mFrontier
Deal found 12/22$193
This CheapOair deal was found by Cheapflights users on 12/22. 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 12/3110:08 amSJU - ISP
1 stop13h 09mFrontier
Thu 1/112:20 pmISP - SJU
1 stop20h 03mFrontier
Deal found 12/22$205
This CheapOair deal was found by Cheapflights users on 12/21. 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 12/3110:08 amSJU - ISP
1 stop13h 09mFrontier
Fri 1/26:00 amISP - SJU
1 stop25h 58mFrontier
Deal found 12/21$230
This CheapOair deal was found by Cheapflights users on 12/21. 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 12/255:09 pmSJU - ISP
1 stop27h 31mFrontier
Thu 1/16:00 amISP - SJU
1 stop25h 58mFrontier
Deal found 12/21$246
This Frontier deal was found by Cheapflights users on 12/21. 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 12/3110:08 amSJU - ISP
1 stop13h 09mFrontier
Sun 1/48:24 pmISP - SJU
1 stop11h 59mFrontier
Deal found 12/21$247
This Frontier deal was found by Cheapflights users on 12/22. 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 1/16:00 amISP - SJU
1 stop8h 31mFrontier
Deal found 12/22$264
This Frontier deal was found by Cheapflights users on 12/22. 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.
Tue 12/303:00 pmSJU - ISP
1 stop9h 59mFrontier
Thu 1/88:40 pmISP - SJU
1 stop13h 40mFrontier
Deal found 12/22$267
This CheapOair deal was found by Cheapflights users on 12/22. 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 12/303:00 pmSJU - ISP
1 stop9h 59mFrontier
Mon 1/52:04 pmISP - SJU
1 stop20h 12mFrontier
Deal found 12/22$268
This CheapOair deal was found by Cheapflights users on 12/20. 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 12/259:37 pmSJU - ISP
1 stop23h 03mFrontier
Fri 1/28:35 pmISP - SJU
1 stop29h 15mFrontier
Deal found 12/20$271
This CheapOair deal was found by Cheapflights users on 12/21. 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 12/286:00 amSJU - ISP
1 stop8h 09mFrontier
Wed 12/315:27 pmISP - SJU
1 stop14h 56mFrontier
Deal found 12/21$280
This CheapOair deal was found by Cheapflights users on 12/22. 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
Fri 1/26:00 amISP - SJU
1 stop25h 58mFrontier
Deal found 12/22$290

Find flight deals from San Juan to Islip

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) 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 23, 2025.

Round-trip from

$173
(CheapOair)

One-way from

$87
(CheapOair)

Popular in

August

Cheapest in

February

Average price

$261
From San Juan to Islip Long Island
Search Deals
One-way flight from San Juan to Islip Long Island
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($26 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 San Juan 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 23, 2025.
Use the filters below to find and compare flights from San Juan to Islip that are best for you.

Fly from

San Juan

Fly to

Islip

Route

Depart

Return

Price

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 2/23

3:53 am-8:40 am

1 stop29h 47m

Islip Long Island

Sat 2/28

8:23 pm-12:54 am

1 stop27h 31m

$173

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Wed 2/25

11:07 am-2:39 pm

1 stop28h 32m

Islip Long Island

Mon 3/2

8:23 am-9:54 am

1 stop24h 31m

$177

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 1/29

4:36 pm-8:47 pm

1 stop29h 11m

Islip Long Island

Mon 2/2

7:43 pm-11:59 pm

1 stop27h 16m

$181

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 2/26

7:09 pm-4:12 pm

1 stop22h 03m

Islip Long Island

Mon 3/2

8:23 am-2:53 am

1 stop17h 30m

$181

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 1/12

9:23 pm-10:46 pm

1 stop26h 23m

Islip Long Island

Thu 1/15

8:45 pm-2:30 am

1 stop28h 45m

$181

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Wed 1/14

8:57 am-10:46 pm

1 stop14h 49m

Islip Long Island

Mon 1/19

8:54 pm-3:26 pm

1 stop17h 32m

$200

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 1/15

6:00 am-7:03 pm

1 stop14h 03m

Islip Long Island

Sat 1/17

8:00 am-1:36 pm

1 stop28h 36m

$200

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 1/12

6:10 am-7:51 pm

1 stop14h 41m

Islip Long Island

Tue 1/13

8:00 am-5:51 pm

1 stop8h 51m

$202

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Mon 1/12

9:23 pm-10:46 pm

1 stop26h 23m

Islip Long Island

Wed 1/14

8:00 am-4:27 pm

1 stop7h 27m

$202

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 1/13

8:57 am-10:46 pm

1 stop14h 49m

Islip Long Island

Wed 1/14

8:00 am-4:27 pm

1 stop7h 27m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 19 results
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Best time to book a flight from San Juan to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from San Juan 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 to Islip

What is the cheapest month to book a flight from San Juan to Islip, New York?

Currently, October is the cheapest month in which you can book a flight from San Juan to Islip, New York (average of $51). Flying from San Juan 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 San Juan 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?

    For a flight from San Juan 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 per day. 0 airlines have flights to Islip Long Island from San Juan on a regular basis.

  • How long is the flight from San Juan to Islip, New York?

    For as low as $173, Frontier can have you in Islip, New York from San Juan in 29h 47m. San Juan and Islip, New York are separated by a distance of 1599 mi.

  • Can I find deals for flights from San Juan to Islip that include hotel bookings?

    Yes. In addition to deals on San Juan to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Juan to Islip?

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

  • Can I find deals for business class flights from San Juan to Islip?

    Yes. Cheapflights offers flight deals from San Juan 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 to Islip, New York?

    Currently, October is the cheapest month in which you can book a flight from San Juan to Islip, New York (average of $51). Flying from San Juan 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.

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead

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