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Islip

$69+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Dec 10 — Dec 171
Wed 12/10
Wed 12/17
1 adult, Economy
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Find 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 November 10, 2025.

This CheapOair deal was found by Cheapflights users on 11/9. 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.
Sat 12/63:55 amSJU - ISP
1 stop7h 25mFrontier
Wed 12/1012:37 pmISP - SJU
1 stop24h 52mFrontier
Deal found 11/9$153
This CheapOair deal was found by Cheapflights users on 11/8. 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.
Fri 12/57:00 amSJU - ISP
1 stop17h 59mFrontier
Sun 12/711:15 amISP - SJU
1 stop21h 40mFrontier
Deal found 11/8$216
This CheapOair deal was found by Cheapflights users on 11/9. 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.
Fri 12/54:24 pmSJU - ISP
1 stop8h 35mFrontier
Tue 12/98:29 pmISP - SJU
1 stop29h 21mFrontier
Deal found 11/9$251
This CheapOair deal was found by Cheapflights users on 11/7. 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 12/223:55 amSJU - ISP
1 stop8h 30mFrontier
Sun 1/113:34 pmISP - SJU
1 stop17h 21mFrontier
Deal found 11/7$262
This CheapOair deal was found by Cheapflights users on 11/8. 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.
Tue 12/23:55 amSJU - ISP
1 stop19h 49mFrontier
Thu 12/410:19 amISP - SJU
1 stop15h 31mFrontier
Deal found 11/8$266
This CheapOair deal was found by Cheapflights users on 11/9. 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.
Tue 12/93:55 amSJU - ISP
1 stop19h 49mFrontier
Mon 12/156:00 amISP - SJU
1 stop7h 54mFrontier
Deal found 11/9$281
This CheapOair deal was found by Cheapflights users on 11/9. 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.
Fri 12/124:24 pmSJU - ISP
1 stop23h 46mFrontier
Sun 12/1412:07 pmISP - SJU
1 stop25h 47mFrontier
Deal found 11/9$296
This CheapOair deal was found by Cheapflights users on 11/9. 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 12/85:09 pmSJU - ISP
1 stop27h 25mFrontier
Wed 12/1012:37 pmISP - SJU
1 stop24h 52mFrontier
Deal found 11/9$326
This CheapOair deal was found by Cheapflights users on 11/10. 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.
Tue 12/23:55 amSJU - ISP
1 stop19h 49mFrontier
Sun 12/711:15 amISP - SJU
1 stop14h 35mFrontier
Deal found 11/10$329
This Frontier deal was found by Cheapflights users on 11/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:22 pmSJU - ISP
1 stop7h 37mFrontier
Mon 1/58:35 pmISP - SJU
1 stop13h 20mFrontier
Deal found 11/8$330

Cheap 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 November 10, 2025.

Round-trip from

$138
(CheapOair)

One-way from

$69
(CheapOair)

Popular in

August

Cheapest in

February

Average price

$237
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. 12% potential increase in price ($29 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 November 2025
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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 November 10, 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

Thu 1/29

3:55 am-10:40 am

1 stop7h 45m

Islip Long Island

Mon 2/2

11:35 am-9:55 am

1 stop21h 20m

$138

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 1/29

3:55 am-10:40 am

1 stop7h 45m

Islip Long Island

Sun 2/1

11:35 am-9:55 am

1 stop21h 20m

$138

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 12/6

8:00 am-3:10 pm

1 stop8h 10m

Islip Long Island

Tue 12/9

8:29 pm-2:50 am

1 stop29h 21m

$216

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sun 1/18

7:00 am-7:26 pm

1 stop13h 26m

Islip Long Island

Sun 1/25

11:35 am-9:55 am

1 stop21h 20m

$216

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 1/30

6:00 am-11:35 am

1 stop6h 35m

Islip Long Island

Tue 2/3

12:25 pm-8:02 pm

1 stop6h 37m

$274

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 1/30

6:00 am-11:35 am

1 stop6h 35m

Islip Long Island

Mon 2/2

11:00 am-7:19 pm

1 stop7h 19m

$274

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 1/15

3:55 am-2:43 pm

1 stop11h 48m

Islip Long Island

Sun 1/18

3:34 pm-2:48 am

1 stop10h 14m

$291

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 12/12

4:24 pm-3:10 pm

1 stop23h 46m

Islip Long Island

Sun 12/14

12:07 pm-2:54 pm

1 stop25h 47m

$296

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 1/31

6:00 am-11:35 am

1 stop6h 35m

Islip Long Island

Mon 2/2

11:00 am-7:19 pm

1 stop7h 19m

$321

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Sat 1/31

6:00 am-11:35 am

1 stop6h 35m

Islip Long Island

Tue 2/3

12:25 pm-8:02 pm

1 stop6h 37m

$321

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/8

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 $274, Frontier can have you in Islip, New York from San Juan in 6h 35m. San Juan and Islip, New York are separated by a distance of 1599 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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
Southampton

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