Cheap flights from Islip (ISP) to San Juan (SJU)

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How to find the cheapest flight from
Islip (ISP) to San Juan (SJU)

All the information you need to plan the best ISP to SJU flight in 2021: compare Islip to San Juan flight prices with the expected peak season, weather and rainfall in San Juan.
What is the cheapest day to fly round-trip from Islip to San Juan?

Travelers have found that booking a Friday departure is the best way to save up to 336% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

How far in advance should I book a flight from Islip to San Juan?

Travelers have found it’s best to book a flight 19 days in advance to save up to 7% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 19 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Islip to San Juan 1-2 weeks in advance for as low as $262, or $281 for flights within the next 24 hours.

What is the cheapest month to fly from Islip to San Juan?

August is one of the best times of the year to fly to San Juan from Islip. Prices for August average $313 per person but you can even find prices for as low as $121. The most expensive prices can be found in the month of December. Opting for a August flight can save you 71% on your journey compared to booking in August

When is the cheapest time to fly from Islip to San Juan (ISP - PR1)?

Unlike at noon, when flights are generally more expensive, you can save up to 40% on flights from Islip to San Juan by exploring options for tickets in the morning.

Cheap flights from Islip to San Juan in May, June 2021

The best prices found for ISP to SJU flights for May, June
18 May - 21 May
$193pp
ISP
Islip Long Island
Frontier
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
 
1 STOP
ISP
Islip Long Island
18 May - 21 May
$216pp
ISP
Islip Long Island
Frontier
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
 
1 STOP
ISP
Islip Long Island
5 May - 12 May
$236pp
ISP
Islip Long Island
Frontier
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
 
1 STOP
ISP
Islip Long Island

Islip to San Juan 2021 flight deals

Cheap flights to San Juan from Islip found for this year
18 May - 21 May
$193pp
ISP
Islip Long Island
Frontier
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
 
1 STOP
ISP
Islip Long Island
18 May - 21 May
$216pp
ISP
Islip Long Island
Frontier
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
 
1 STOP
ISP
Islip Long Island
5 May - 12 May
$236pp
ISP
Islip Long Island
Frontier
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
 
1 STOP
ISP
Islip Long Island

Last minute flights from Islip to San Juan

Late deals on round-trip flights to San Juan from Islip, departing today and this week
12 May - 15 May
$260pp
ISP
Islip Long Island
Frontier
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
 
1 STOP
ISP
Islip Long Island
11 May - 13 May
$301pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
American Airlines
   
2 STOPS
ISP
Islip Long Island
13 May - 15 May
$310pp
ISP
Islip Long Island
Frontier
 
1 STOP
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
 
1 STOP
ISP
Islip Long Island

One-way flights to San Juan from Islip

The cheapest one-way flights from Islip to San Juan
9:32 am - 10:19 pm
Frontier
1 Stop
12h 47m
ISP - SJU
Frontier
$98
Kiwi.com
2:23 am - 4:36 pm
American Airlines
2 Stops
14h 13m
ISP - SJU
American Airlines
12:00 pm - 1:52 pm
Multiple Airlines
3 Stops
25h 52m
ISP - SJU
Multiple Airlines
$2,907
Gotogate

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Islip</span> to <span class="emphasized">San Juan</span> flights.

Flight FAQs

From Islip to San Juan

Are flight prices decreasing from Islip to San Juan due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Islip and San Juan for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Islip Long Island to San Juan to control the spread of COVID-19?

Delta is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. New policies for travelers booking flights from Islip Long Island to San Juan include masks being provided and required on board, daily cleaning and sanitization, use of HEPA filters, pre-flight testing for antibodies and symptoms, and socially distanced seating (for a limited time). Keep in mind that policies will vary by airline.

Which airlines flying from Islip Long Island to San Juan have flexible cancellations due to COVID-19?

Frontier, American Airlines, and JetBlue are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

What airport do you fly from for flights from Islip to San Juan?

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 San Juan. 4 airlines have flights from Long Island to San Juan on a regular basis. Booking flights from Islip Long Island to San Juan should not be difficult; the airport handles an average of 0 outbound flights to San Juan per day.

Can I find flights from Islip to San Juan for under $200 on Cheapflights?

Yes, there are multiple flights from Islip to San Juan for under $200. The cheapest flight booked recently is on Frontier for just $193, but on average you can expect to pay $303.

Are there nonstop flights from Islip to San Juan for under $200 on Cheapflights?

There are no nonstop flights from Islip to San Juan, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from Islip to San Juan for under $300?

There are currently 20+ open flights from Islip to San Juan within the next 7 days for less than $300.

Is Islip weather warmer or cooler than San Juan?

With an average temperature of 90 °F, peak weather can be found in June. As a traveler, expect to see changes in flight prices during that period. The temperatures in San Juan are hotter than in Islip.

How long is the flight from Islip to San Juan?

American Airlines and Frontier can get you from Islip to San Juan in just under 7h 05m. Your travel time can differ by up to 15m. This flight may include one or multiple stops.

What are the cheapest airlines flying from Islip to San Juan round-trip?

Frontier, at $193, was found to be the cheapest airline from Islip to San Juan. An alternate airline flying to your destination would be American Airlines. Frontier is currently priced 55% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Islip to San Juan one-way?

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $98. Users have also found tickets on American Airlines for as little as $182.

Alternative routes for Islip to San Juan

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for San Juan

Things to know before you go - useful duration and weather info for your trip from Islip to San Juan.
Today's exchange rate
$1 = $1.00
Average temperature for May in San Juan
87.8 °F
Avg rainfall for May in San Juan
3.6 ″

Airports servicing Islip

Airports servicing San Juan

San Juan Isla Grande (SIG)
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