Cheap flights from Islip (ISP) to Puerto Rico from $98

This is the cheapest one-way flight price, found on 9/20. Prices may vary by date and flight preferences.
ISP — SJU
sep. 26 — oct. 31

How far in advance should I book a flight from Islip to Puerto Rico?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 24% on flights from Islip to Puerto Rico compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $391. For sooner than that we have options available in the next 3 days from $412.

What is the cheapest month to fly from Islip to Puerto Rico?

October can be a great time to fly to Puerto Rico from Islip with a flight ticket averaging about $363. Cheapflights users have found deals in the month of October for as cheap as $182. The most expensive prices can be found in the month of December.

When is the cheapest time to fly from Islip to Puerto Rico (ISP - PR)?

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

Cheap Frontier flights from Islip to Puerto Rico

Cheap Islip to Puerto Rico flights in September & October 2023

The best prices found for ISP to Puerto Rico flights for September, October

Islip to Puerto Rico 2023 flight deals

Cheap flights to Puerto Rico from Islip found for this year

Islip to Puerto Rico flights leaving soon

Late deals on return flights to Puerto Rico from Islip, departing today and this week

One-way flights to Puerto Rico from Islip

The cheapest one-way flights from Islip to Puerto Rico

Find flights from Islip to Puerto Rico within your budget

Use the slider to find flights from Islip to Puerto Rico that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$189 - $298

Route

Depart

Return

Price

Islip Long IslandSan Juan Luis Munoz Marin Intl

ISP - SJU

ISPSJU

Islip Long Island

sáb. 10/7

1 stop11h 21m

San Juan Luis Munoz Marin Intl

mié. 10/11

2 stops18h 34m

Islip Long IslandSan Juan Luis Munoz Marin Intl

ISP - SJU

ISPSJU

Islip Long Island

sáb. 10/7

1 stop11h 21m

San Juan Luis Munoz Marin Intl

mié. 10/11

1 stop25h 34m

Islip Long IslandSan Juan Luis Munoz Marin Intl

ISP - SJU

ISPSJU

Islip Long Island

lun. 10/9

1 stop16h 36m

San Juan Luis Munoz Marin Intl

dom. 10/15

1 stop24h 03m

Islip Long IslandSan Juan Luis Munoz Marin Intl

ISP - SJU

ISPSJU

Islip Long Island

dom. 10/1

1 stop13h 22m

San Juan Luis Munoz Marin Intl

sáb. 10/7

2 stops19h 34m

Islip Long IslandSan Juan Luis Munoz Marin Intl

ISP - SJU

ISPSJU

Islip Long Island

mié. 10/18

1 stop12h 13m

San Juan Luis Munoz Marin Intl

mié. 10/25

1 stop26h 31m

Islip Long IslandSan Juan Luis Munoz Marin Intl

ISP - SJU

ISPSJU

Islip Long Island

dom. 10/1

1 stop22h 09m

San Juan Luis Munoz Marin Intl

vie. 10/6

1 stop13h 37m

Islip Long IslandSan Juan Luis Munoz Marin Intl

ISP - SJU

ISPSJU

Islip Long Island

dom. 10/1

1 stop22h 09m

San Juan Luis Munoz Marin Intl

sáb. 10/7

1 stop7h 22m

Islip Long IslandSan Juan Luis Munoz Marin Intl

ISP - SJU

ISPSJU

Islip Long Island

lun. 10/9

1 stop16h 36m

San Juan Luis Munoz Marin Intl

sáb. 10/14

1 stop9h 58m

Islip Long IslandSan Juan Luis Munoz Marin Intl

ISP - SJU

ISPSJU

Islip Long Island

lun. 10/9

1 stop16h 36m

San Juan Luis Munoz Marin Intl

sáb. 10/14

1 stop9h 58m

Flights are sorted by cheapest first

Deals found on 9/19

Reviews of airlines servicing Puerto Rico

Frontier
5.8
Fair
762 reviews

Comfort

5.5

Food

4.7

Crew

6.6

Entertainment

4.5

Boarding

6.0

Overall

5.8

Reviews

1 / 10

Price is good. No need to separate couple in order to get sét buy

Frontier
5.8
Fair
762 reviews
Frontier
5.8
Fair
762 reviews

Comfort

5.5

Food

4.7

Crew

6.6

Entertainment

4.5

Boarding

6.0

Overall

5.8

Reviews

1 / 10

Price is good. No need to separate couple in order to get sét buy

Related info for your journey

Useful info, stats and facts about Islip to Puerto Rico flights.

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.

Can I find flights from Islip to Puerto Rico for under $200 on Cheapflights?

Yes, there are multiple flights from Islip to Puerto Rico for under $200. The cheapest flight booked recently is on Multiple Airlines for just $189, but on average you can expect to pay $425.

Are there last-minute flights available from Islip to Puerto Rico for under $300?

There are currently 4+ open flights from Islip to Puerto Rico within the next 7 days for less than $300.

What does ISP to SJU mean?

ISP stands for Islip Long Island Airport, while SJU stands for San Juan Luis Munoz Marin Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Aguadilla Borinquen Airport (BQN), San Juan Isla Grande Airport (SIG), Ponce Mercedita Airport (PSE), Vieques Airport (VQS), Culebra Airport (CPX) are other airports near this flight route and their unique identifiers/IATA codes.

Top airline flying from Islip to Puerto Rico

The chart below displays the airlines Cheapflights users traveling from Islip to Puerto Rico choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$191Average$278FlexibilityNo cancel feeOn-time62%
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