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$76+ Cheap flights from Islip, NY (ISP) to Puerto Rico

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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SJU
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Islip to Puerto Rico

Keep the following information in mind while searching for Islip to Puerto Rico flight deals. Data was last updated February 20, 2025.

Round-trip from

$118
(Frontier)

One-way from

$76
(Priceline)

Popular in

December

Cheapest in

September

Average price

$327
From Islip Long Island to Puerto Rico
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One-way flight from Islip Long Island to Puerto Rico
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Highest demand for flights based on searches. 5% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Islip to Puerto Rico

Cheapest flights from Islip to Puerto Rico
Explore the most affordable flight options available from Islip to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Frontier deal was found by Cheapflights users on 2/19. 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 4/282:08 pmISP - SJU
1 stop12h 41mFrontier
Tue 5/69:30 pmSJU - ISP
1 stop12h 30mFrontier
Deal found 2/19$118
This JetBlue deal was found by Cheapflights users on 2/19. 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.
Wed 3/52:50 pmISP - SJU
1 stop7h 48mJetBlue
Wed 3/124:30 amSJU - ISP
1 stop8h 09mJetBlue
Deal found 2/19$280
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/292:35 pmISP - SJU
3 stops18h 51mMultiple Airlines
Fri 4/43:05 amSJU - ISP
2 stops31h 06mMultiple Airlines
Deal found 2/20$326
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:05 amISP - SJU
2 stops13h 40mSouthwest
Sun 9/145:15 pmSJU - ISP
1 stop6h 35mSouthwest
Deal found 2/20$491

Find flights from Islip to Puerto Rico within your budget

Customize your flight search to find flights from Islip to Puerto Rico 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 February 20, 2025.

Fly from

Islip

Fly to

Puerto Rico

Route

Depart

Return

Price

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Mon 4/28

2:08 pm-2:49 am

1 stop12h 41m

San Juan Luis Munoz Marin Intl

Tue 5/6

9:30 pm-10:00 am

1 stop12h 30m

$118

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Wed 3/5

2:50 pm-11:38 pm

1 stop7h 48m

San Juan Luis Munoz Marin Intl

Wed 3/12

4:30 am-12:39 pm

1 stop8h 09m

$280

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Sat 3/29

2:35 pm-9:26 am

3 stops18h 51m

San Juan Luis Munoz Marin Intl

Fri 4/4

3:05 am-10:11 am

2 stops31h 06m

$326

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Sat 3/29

5:55 am-3:45 pm

2 stops9h 50m

San Juan Luis Munoz Marin Intl

Sat 4/5

7:50 am-6:00 pm

1 stop10h 10m

$491

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Tue 3/25

9:04 pm-9:36 pm

1 stop24h 32m

$76

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Sun 3/23

10:15 am-9:05 pm

2 stops10h 50m

$246

IslipSan Juan

ISP - SJU

ISPSJU

Islip Long Island

Wed 3/19

1:34 pm-8:42 pm

1 stop7h 08m

$248

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Best time to book a flight from Islip to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Islip 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.

Travel insights for flights from Islip to Puerto Rico

Get recent, data-driven insights about flights from Islip to Puerto Rico including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Islip, New York to Puerto Rico?

Currently, September is the cheapest month in which you can book a flight from Islip, New York to Puerto Rico (average of $254). Flying from Islip, New York to Puerto Rico in March is currently the most expensive (average of $363). 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.

What is the cheapest time of day to fly from ISP to PR?

Find hourly flight availability from Islip to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Islip, New York to Puerto Rico as you normally would.

Rainfall in Puerto Rico by month

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

In terms of precipitation, rainfall in Puerto Rico ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit Puerto Rico when rainfall is around 2.2 in.

Temperature in Puerto Rico by month

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

If weather is an important factor for your trip to Puerto Rico, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

Reviews of airlines servicing Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. 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 Puerto Rico. Reviews last updated February 20, 2025.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Food

7.1

Crew

8.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Food

7.1

Crew

8.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Food

7.1

Crew

8.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Frontier
6.0
Okay
3,355 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Food

7.1

Crew

8.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Islip to Puerto Rico. 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 from for flights from Islip to Puerto Rico?

    Islip Long Island (ISP), located 7.2 mi from the city center, is the airport you fly out of when you book flights from Islip to Puerto Rico.

  • What are the cheapest airlines to fly from Islip, New York to Puerto Rico one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $76. However, be on the lookout for offers from Southwest and JetBlue, as they are both options that can get you from Islip, New York to Puerto Rico for a low price.

  • Can I find deals for flights from Islip to Puerto Rico that include hotel bookings?

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

  • How can I find direct flights from Islip to Puerto Rico?

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

  • Can I find deals for business class flights from Islip to Puerto Rico?

    Yes. Cheapflights offers flight deals from Islip to Puerto Rico 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 Islip, New York to Puerto Rico?

    Currently, September is the cheapest month in which you can book a flight from Islip, New York to Puerto Rico (average of $254). Flying from Islip, New York to Puerto Rico in March is currently the most expensive (average of $363). 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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Alternative routes for Islip to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Islip to Puerto Rico

Discover the top airline that operate flights from Islip to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$59Average$239FlexibilityNo cancel feeOn-time62%
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