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$85+ 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ISP
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$168
(CheapOair)

One-way from

$85
(CheapOair)

Popular in

July

Cheapest in

February

Average price

$240
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. 13% potential increase in price ($34 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 June 2025
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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 June 12, 2025.

This CheapOair deal was found by Cheapflights users on 6/11. 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 11/114:42 pmSJU - ISP
1 stop18h 55mFrontier
Wed 11/195:05 pmISP - SJU
1 stop8h 49mFrontier
Deal found 6/11$168
This JetBlue deal was found by Cheapflights users on 6/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/36:45 amSJU - ISP
1 stop6h 58mJetBlue
Tue 7/812:35 pmISP - SJU
1 stop7h 59mJetBlue
Deal found 6/11$386

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 June 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 11/11

4:42 pm-10:37 am

1 stop18h 55m

Islip Long Island

Wed 11/19

5:05 pm-2:54 am

1 stop8h 49m

$168

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Thu 7/3

6:45 am-1:43 pm

1 stop6h 58m

Islip Long Island

Tue 7/8

12:35 pm-8:34 pm

1 stop7h 59m

$386

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Fri 11/7

3:59 am-10:37 am

1 stop7h 38m

$85

San JuanIslip

SJU - ISP

SJUISP

San Juan Luis Munoz Marin Intl

Tue 9/9

6:00 am-2:44 pm

1 stop8h 44m

$312

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 $108). Flying from San Juan Luis Munoz Marin Intl Airport to Islip, New York in November is currently the most expensive (average of $213). 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.

Rainfall in Islip by month

Plan your trip to Islip by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

Temperature in Islip by month

Plan your trip to Islip by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated June 12, 2025.
Read reviews from past customers who have flown JetBlue and Frontier from San Juan to Islip. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
JetBlue
7.3
Good
2,925 reviews

Food

6.7

Overall

7.3

Comfort

7.6

Entertainment

7.3

Boarding

7.5

Crew

8.0

Reviews

1 / 20
6.0
Good

Linda,Dec 2024

ANU - JFK

After bag drop had to go through security again. Delayed flight
JetBlue
7.3
Good
2,925 reviews
JetBlue
7.3
Good
2,925 reviews

Food

6.7

Overall

7.3

Comfort

7.6

Entertainment

7.3

Boarding

7.5

Crew

8.0

Reviews

1 / 20
6.0
Good

Linda,Dec 2024

ANU - JFK

After bag drop had to go through security again. Delayed flight
Frontier
5.9
Fair
3,295 reviews
JetBlue
7.3
Good
2,925 reviews

Food

6.7

Overall

7.3

Comfort

7.6

Entertainment

7.3

Boarding

7.5

Crew

8.0

Reviews

1 / 20
6.0
Good

Linda,Dec 2024

ANU - JFK

After bag drop had to go through security again. Delayed flight

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.

  • What are the cheapest airlines flying from San Juan Luis Munoz Marin Intl Airport to Islip, New York round-trip?

    Currently priced at $168, Frontier will fly you from San Juan Luis Munoz Marin Intl Airport to Islip, New York and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on JetBlue for as low as $386.

  • 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 $108). Flying from San Juan Luis Munoz Marin Intl Airport to Islip, New York in November is currently the most expensive (average of $213). 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 San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Southampton
Riverhead

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