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ISP - SJU

$129 Find cheap flights from Islip to San Juan

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to San Juan departing on 8/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/29
Sat 7/6

Search hundreds of travel sites at once for deals on flights to San Juan

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to San Juan, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to San Juan, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from Islip to San Juan (ISP-SJU)

 
These are the cheapest deals for flights from Islip to San Juan currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Islip to San Juan

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Islip to San Juan.

Recent one-way flight deals from Islip to San Juan

Only flying one-way? Below are some of the best one-way flight deals from Islip to San Juan found on KAYAK recently.

Recent last minute flight deals from Islip to San Juan

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Islip to San Juan.

Recent direct flight deals from Islip to San Juan

The latest deals for direct flights from Islip to San Juan so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Islip to San Juan

Find recent round-trip train or bus tickets from Islip to San Juan.

All round-trip flight deals to San Juan

The cheapest plane tickets to San Juan found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
4:46 pm - 1:59 amISP-SJU
9h 13m1 stop
8:05 pm - 7:40 amSJU-ISP
11h 35m1 stop
$230Frontier
Find Deal
Wed, Jun 12 - Wed, Jun 19
9:53 pm - 8:22 amISP-SJU
10h 29m1 stop
3:08 am - 12:55 pmSJU-ISP
9h 47m1 stop
$244Frontier
Find Deal
Tue, Jun 11 - Mon, Jun 17
4:46 pm - 2:05 amISP-SJU
9h 19m1 stop
8:28 pm - 7:40 amSJU-ISP
11h 12m1 stop
$248Frontier
Find Deal
Sun, Jun 9 - Thu, Jun 13
11:22 am - 1:59 amISP-SJU
14h 37m1 stop
2:59 am - 7:40 amSJU-ISP
28h 41m1 stop
$256Frontier
Find Deal
Fri, Jun 14 - Thu, Jun 20
4:46 pm - 1:59 amISP-SJU
9h 13m1 stop
3:08 am - 1:58 pmSJU-ISP
10h 50m1 stop
$274Frontier
Find Deal
Sat, Jun 15 - Wed, Jun 19
10:59 am - 9:47 pmISP-SJU
10h 48m1 stop
3:08 am - 8:26 amSJU-ISP
29h 18m1 stop
$298Frontier
Find Deal
Sun, Aug 18 - Wed, Aug 21
9:53 pm - 8:22 amISP-SJU
10h 29m1 stop
8:28 pm - 7:40 amSJU-ISP
11h 12m1 stop
$304Frontier
Find Deal
Tue, Jun 11 - Tue, Jun 18
5:25 pm - 2:03 amISP-SJU
8h 38m1 stop
8:09 pm - 8:26 amSJU-ISP
12h 17m1 stop
$310Frontier
Find Deal
Thu, Aug 22 - Sun, Aug 25
1:57 pm - 11:41 amISP-SJU
21h 44m2 stops
3:33 am - 5:07 pmSJU-ISP
13h 34m2 stops
Fri, Jun 14 - Thu, Jun 20
1:57 pm - 11:41 amISP-SJU
21h 44m2 stops
4:50 am - 5:07 pmSJU-ISP
12h 17m2 stops
Fri, Jun 14 - Fri, Jun 21
5:25 pm - 2:03 amISP-SJU
8h 38m1 stop
$129Frontier
Find Deal
Thu, Aug 15
10:23 pm - 9:03 pmISP-SJU
22h 40m1 stop
$148Frontier
Find Deal
Thu, Jun 27
4:46 pm - 1:59 amISP-SJU
9h 13m1 stop
$214Frontier
Find Deal
Wed, Jun 26
4:59 pm - 2:01 amISP-SJU
9h 02m1 stop
$269Frontier
Find Deal
Sat, Jul 6
4:46 pm - 1:59 amISP-SJU
9h 13m1 stop
$274Frontier
Find Deal
Wed, Jun 26
2:05 pm - 7:50 pmISP-SJU
29h 45m3 stops
Thu, Jun 27
1:05 pm - 2:33 amISP-SJU
13h 28m2 stops
Thu, Jun 27
5:25 pm - 2:03 amISP-SJU
8h 38m1 stop
$339Frontier
Find Deal
Fri, Nov 1
4:49 pm - 2:07 amISP-SJU
9h 18m1 stop
8:32 pm - 7:40 amSJU-ISP
11h 08m1 stop
$358Frontier
Find Deal
Sat, Jun 1 - Tue, Jun 4
4:49 pm - 2:07 amISP-SJU
9h 18m1 stop
10:15 pm - 7:40 amSJU-ISP
9h 25m1 stop
$378Frontier
Find Deal
Sat, Jun 1 - Mon, Jun 10
4:49 pm - 2:07 amISP-SJU
9h 18m1 stop
3:08 am - 1:17 pmSJU-ISP
10h 09m1 stop
$398Frontier
Find Deal
Sat, Jun 1 - Mon, Jun 3

Flights from Islip to San Juan - Travel Insights & Trends

Get data-powered insights and trends into flights from Islip to San Juan to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Islip, New York to San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Islip, New York to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Islip, New York to San Juan Luis Munoz Marin Intl Airport is September, where tickets cost $202 on average. On the other hand, the most expensive months are December and February, where the average cost of tickets is $454 and $371 respectively.

How far in advance should I book a flight from Islip, New York to San Juan Luis Munoz Marin Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Islip, New York to San Juan Luis Munoz Marin Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Islip, New York to San Juan Luis Munoz Marin Intl Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 30 days before departure.

Good to know

Low season

November

High season

August

Cheapest flight

$129
Best time to beat the crowds with an average 58% drop in price.
Most popular time to fly and prices are also 22% lower on average.
Flight from Islip to San Juan

When to book flights from Islip to San Juan

Are your dates flexible? Find out the best times to travel from Islip to San Juan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Islip to San Juan flights

  • What is the cheapest flight from Islip, New York to San Juan Luis Munoz Marin Intl Airport?

    In the last 3 days, the lowest price for a flight from Islip, New York to San Juan Luis Munoz Marin Intl Airport was $129 for a one-way ticket and $230 for a round-trip.

  • Do I need a passport to fly between Islip and San Juan?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Islip and on arrival in San Juan.

  • Which airports will I be using when flying from Islip to San Juan?

    Islip airport is called Islip Long Island and the only airport in San Juan is San Juan Luis Munoz Marin Intl.

  • Which aircraft models fly most regularly from Islip to San Juan?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Islip to San Juan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to San Juan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to San Juan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to San Juan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Juan with an airline and back to Islip with another airline. Booking your flights between Islip and SJU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to San Juan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Juan from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Islip to San Juan

 
See real verified KAYAK customer reviews for airlines flying from Islip to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Islip to San Juan? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.2
FrontierOverall score based on 4016 reviews
5.8Comfort
6.6Boarding
7.1Crew
5.1Food
4.9Entertainment
Airline reviews

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

2.0 MediocreTeddy, May 2024LAS - SAN
Read more about Frontier reviews

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

The Frontier app wasn’t working. So I could not pay for a carry on the week prior to flying. They charged me 99$ at the gate to carry on a duffle bag.

Good for the price. My only complaint is that the pilot should keep the air flowing while passengers are waiting to getting out of airplane.

Plane could have been more on time. More leg room .

I arrived 1 hour prior to boarding, and they said I was too late for a domestic flight. First time I heard that :-(

Book cheap flights from Islip to San Juan

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Islip to San Juan found on KAYAK in the last 72 hours.
8/15Thu
1 stopFrontier
8h 38mISP-SJU
$129
6/27Thu
1 stopFrontier
22h 40mISP-SJU
$148
6/26Wed
1 stopFrontier
9h 13mISP-SJU
$214
7/6Sat
1 stopFrontier
9h 02mISP-SJU
$269
6/26Wed
1 stopFrontier
9h 13mISP-SJU
$274
6/27Thu
3 stops
29h 45mISP-SJU
$280
6/27Thu
2 stops
13h 28mISP-SJU
$299
11/1Fri
1 stopFrontier
8h 38mISP-SJU
$339

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Last minute flights from Islip to San Juan

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Islip to San Juan that are departing in the next 10 days.
6/1Sat
multi-stopFrontier
9h 18mISP-SJU
6/4Tue
multi-stopFrontier
11h 08mSJU-ISP
$358
6/1Sat
multi-stopFrontier
9h 18mISP-SJU
6/10Mon
multi-stopFrontier
9h 25mSJU-ISP
$378
6/1Sat
multi-stopFrontier
9h 18mISP-SJU
6/3Mon
multi-stopFrontier
10h 09mSJU-ISP
$398

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Islip - San Juan Flights

Departure:

Islip (ISP)United States

Destination:

San Juan (SJU)Puerto Rico

Return flight deals:

San Juan - Islip

Cabin classes: