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.

$73 Cheap Flights from Philadelphia to Islip in 2026

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Find the cheapest flights from Philadelphia to New York

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:00 am - 11:10 am

PHL

ISP

24h 10m1 stop

11:50 am - 10:46 pm

ISP

PHL

10h 56m2 stops

$227Multiple Airlines

Tue, Jan 20 - Sat, Jan 24

6:00 am - 11:33 am

PHL

ISP

29h 33m1 stop

12:25 pm - 11:50 pm

ISP

PHL

11h 25m1 stop

$239Multiple Airlines

Tue, Jan 20 - Sat, Jan 24

7:50 pm - 1:31 pm

PHL

ISP

17h 41m1 stop

8:21 pm - 11:18 am

ISP

PHL

14h 57m2 stops

$260Multiple Airlines

Thu, Feb 19 - Sun, Feb 22

7:50 pm - 1:31 pm

PHL

ISP

17h 41m1 stop

5:07 pm - 8:12 am

ISP

PHL

15h 05m1 stop

$272Multiple Airlines

Thu, Feb 19 - Sun, Feb 22

5:10 am - 4:12 pm

PHL

ISP

11h 02m1 stop

8:21 pm - 7:32 am

ISP

PHL

11h 11m1 stop

$334Frontier

Thu, Feb 19 - Sun, Feb 22

6:00 am - 11:33 am

PHL

ISP

29h 33m2 stops

12:25 pm - 12:52 am

ISP

PHL

12h 27m2 stops

$356Multiple Airlines

Tue, Jan 20 - Sat, Jan 24

6:00 am - 1:31 pm

PHL

ISP

7h 31m1 stop

7:26 pm - 4:36 pm

ISP

PHL

21h 10m2 stops

$552Multiple Airlines

Mon, Apr 13 - Thu, Apr 16

6:00 am - 11:05 am

PHL

ISP

5h 05m1 stop

12:30 pm - 5:38 pm

ISP

PHL

5h 08m1 stop

$655Multiple Airlines

Sun, Apr 12 - Wed, Apr 15

7:00 am - 7:39 pm

PHL

ISP

12h 39m1 stop

12:30 pm - 9:40 pm

ISP

PHL

9h 10m1 stop

$709Multiple Airlines

Tue, Apr 14 - Thu, Apr 16

6:00 am - 4:10 pm

PHL

ISP

10h 10m1 stop

12:30 pm - 9:40 pm

ISP

PHL

9h 10m1 stop

$745Multiple Airlines

Mon, Apr 13 - Thu, Apr 16

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

Tue 1/20

11:00 am-11:10 am

1 stop24h 10m

Islip Long Island

Sat 1/24

11:50 am-10:46 pm

2 stops10h 56m

$227

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 1/20

6:00 am-11:33 am

1 stop29h 33m

Islip Long Island

Sat 1/24

12:25 pm-11:50 pm

1 stop11h 25m

$239

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 2/19

7:50 pm-1:31 pm

1 stop17h 41m

Islip Long Island

Sun 2/22

8:21 pm-11:18 am

2 stops14h 57m

$260

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 2/19

7:50 pm-1:31 pm

1 stop17h 41m

Islip Long Island

Sun 2/22

5:07 pm-8:12 am

1 stop15h 05m

$272

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 2/19

5:10 am-4:12 pm

1 stop11h 02m

Islip Long Island

Sun 2/22

8:21 pm-7:32 am

1 stop11h 11m

$334

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 1/20

6:00 am-11:33 am

2 stops29h 33m

Islip Long Island

Sat 1/24

12:25 pm-12:52 am

2 stops12h 27m

$356

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Mon 4/13

6:00 am-1:31 pm

1 stop7h 31m

Islip Long Island

Thu 4/16

7:26 pm-4:36 pm

2 stops21h 10m

$552

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sun 4/12

6:00 am-11:05 am

1 stop5h 05m

Islip Long Island

Wed 4/15

12:30 pm-5:38 pm

1 stop5h 08m

$655

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 4/14

7:00 am-7:39 pm

1 stop12h 39m

Islip Long Island

Thu 4/16

12:30 pm-9:40 pm

1 stop9h 10m

$709

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Mon 4/13

6:00 am-4:10 pm

1 stop10h 10m

Islip Long Island

Thu 4/16

12:30 pm-9:40 pm

1 stop9h 10m

$745

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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	17h 41m
Direct flights	None

The fastest flight from Philadelphia to Islip, New York takes 17h 41m

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. 17h 41m 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.