When did momondo last update prices for flights from Philadelphia Airport to Islip Long Island Airport?

Prices for flights from Philadelphia Airport to Islip Long Island Airport refresh daily.

How old do you have to be to fly from Philadelphia Airport to Islip Long Island Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$72 Cheap Flights from Philadelphia to Islip in 2025/26

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Find the cheapest flights from Philadelphia to New York

Round-trip

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:16 pm - 11:59 pm

PHL

ISP

11h 43m1 stop

7:53 pm - 11:14 am

ISP

PHL

39h 21m2 stops

$204Multiple Airlines

Sun, Jan 18 - Sun, Jan 25

12:16 pm - 11:59 pm

PHL

ISP

11h 43m1 stop

7:53 pm - 10:26 am

ISP

PHL

14h 33m1 stop

$207Frontier

Sun, Jan 18 - Sun, Jan 25

8:05 pm - 1:45 pm

PHL

ISP

17h 40m1 stop

8:40 pm - 8:37 am

ISP

PHL

11h 57m1 stop

$211Multiple Airlines

Sun, Jan 4 - Thu, Jan 8

6:00 am - 1:45 pm

PHL

ISP

7h 45m1 stop

7:20 pm - 4:04 pm

ISP

PHL

20h 44m1 stop

$249Multiple Airlines

Mon, Jan 5 - Fri, Jan 9

8:05 pm - 1:45 pm

PHL

ISP

17h 40m1 stop

8:40 pm - 2:55 pm

ISP

PHL

18h 15m2 stops

$258Multiple Airlines

Sun, Jan 4 - Thu, Jan 8

6:00 am - 1:45 pm

PHL

ISP

7h 45m1 stop

2:01 pm - 11:13 am

ISP

PHL

21h 12m2 stops

$284Multiple Airlines

Mon, Jan 5 - Fri, Jan 9

12:00 pm - 11:50 am

PHL

ISP

23h 50m1 stop

12:35 pm - 11:01 pm

ISP

PHL

10h 26m1 stop

$451JetBlue

Thu, May 7 - Wed, May 13

8:54 pm - 4:10 pm

PHL

ISP

19h 16m2 stops

7:25 am - 11:50 pm

ISP

PHL

16h 25m2 stops

$853Multiple Airlines

Mon, Jan 5 - Fri, Jan 9

momondo Fare Finder

Use the filters below to find and compare flights from Philadelphia to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sun 1/18

12:16 pm-11:59 pm

1 stop11h 43m

Islip Long Island

Sun 1/25

7:53 pm-11:14 am

2 stops39h 21m

$204

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sun 1/18

12:16 pm-11:59 pm

1 stop11h 43m

Islip Long Island

Sun 1/25

7:53 pm-10:26 am

1 stop14h 33m

$207

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sun 1/4

8:05 pm-1:45 pm

1 stop17h 40m

Islip Long Island

Thu 1/8

8:40 pm-8:37 am

1 stop11h 57m

$211

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Mon 1/5

6:00 am-1:45 pm

1 stop7h 45m

Islip Long Island

Fri 1/9

7:20 pm-4:04 pm

1 stop20h 44m

$249

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sun 1/4

8:05 pm-1:45 pm

1 stop17h 40m

Islip Long Island

Thu 1/8

8:40 pm-2:55 pm

2 stops18h 15m

$258

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Mon 1/5

6:00 am-1:45 pm

1 stop7h 45m

Islip Long Island

Fri 1/9

2:01 pm-11:13 am

2 stops21h 12m

$284

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 5/7

12:00 pm-11:50 am

1 stop23h 50m

Islip Long Island

Wed 5/13

12:35 pm-11:01 pm

1 stop10h 26m

$451

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Mon 1/5

8:54 pm-4:10 pm

2 stops19h 16m

Islip Long Island

Fri 1/9

7:25 am-11:50 pm

2 stops16h 25m

$853

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 1/22

9:02 pm-8:47 pm

1 stop23h 45m

$72

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 1/22

8:20 am-6:48 pm

2 stops10h 28m

$101

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Philadelphia to Islip Long Island?

Frontier is the most popular carrier operating from Philadelphia to Islip Long Island

When to book flights from Philadelphia to Islip, New York

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Islip, New York according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Philadelphia to Islip, New York (PHL to ISP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Islip, New York

Fastest flight time	11h 43m
Direct flights	None

The fastest flight from Philadelphia to Islip, New York takes 11h 43m

There are no direct flights from Philadelphia to Islip, New York. There are no popular flight routes from Philadelphia to Islip, New York.

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How far is Philadelphia to Islip Long Island by plane?
There are 115.4 mi between Philadelphia and Islip Long Island. 11h 43m is a normal flight duration for this route.
When did momondo last update prices for flights from Philadelphia Airport to Islip Long Island Airport?
Prices for flights from Philadelphia Airport to Islip Long Island Airport refresh daily.
How old do you have to be to fly from Philadelphia Airport to Islip Long Island Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Islip?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Philadelphia to Islip for you.

Can I find flights from Philadelphia to Islip with flexible booking policies on momondo?

Flights from Philadelphia to Islip with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Philadelphia to Islip?

Once you have performed a search for Philadelphia to Islip flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Philadelphia to Islip right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Philadelphia to Islip now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Islip and let you know when they change.