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.

$109 Cheap Flights from Philadelphia to Islip in 2025/26

1 adult

0 bags

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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.

6:15 am - 10:37 amPHL-ISP

28h 22m1 stop

4:58 pm - 8:21 amISP-PHL

15h 23m2 stops

$316Multiple Airlines

Find Deal

Tue, Nov 4 - Sat, Nov 8

6:15 am - 5:42 pmPHL-ISP

11h 27m1 stop

4:58 pm - 6:38 pmISP-PHL

25h 40m2 stops

$372Multiple Airlines

Find Deal

Tue, Nov 4 - Fri, Nov 7

6:15 am - 5:42 pmPHL-ISP

11h 27m1 stop

4:58 pm - 1:24 amISP-PHL

8h 26m1 stop

$385Multiple Airlines

Find Deal

Tue, Nov 4 - Fri, Nov 7

6:15 am - 10:37 amPHL-ISP

28h 22m1 stop

8:45 pm - 11:29 amISP-PHL

14h 44m1 stop

$413Multiple Airlines

Find Deal

Tue, Nov 4 - Sat, Nov 8

3:10 pm - 11:04 amPHL-ISP

19h 54m2 stops

7:30 am - 10:47 pmISP-PHL

15h 17m2 stops

$1,254Multiple Airlines

Find Deal

Tue, Nov 4 - Fri, Nov 7

3:10 pm - 11:04 amPHL-ISP

19h 54m2 stops

9:59 am - 11:53 pmISP-PHL

13h 54m2 stops

$1,286Multiple Airlines

Find Deal

Tue, Nov 4 - Sat, Nov 8

Frontier flights from Philadelphia to Islip, New York

Our best Frontier deals on Philadelphia to Islip, New York flight tickets

Frontier

Oct 23

PHL7:00 amPhiladelphia

13h 42m

2 stops

ISP8:42 pmIslip Long Island

Oct 26

ISP9:47 pmIslip Long Island

27h 12m

2 stops

PHL12:59 amPhiladelphia

$300

Find similar

Frontier

Oct 29

PHL8:43 pmPhiladelphia

20h 59m

2 stops

ISP5:42 pmIslip Long Island

Nov 1

ISP4:58 pmIslip Long Island

15h 32m

1 stop

PHL8:30 amPhiladelphia

$315

Find similar

Frontier

Oct 23

PHL5:05 amPhiladelphia

15h 37m

1 stop

ISP8:42 pmIslip Long Island

Oct 26

ISP9:47 pmIslip Long Island

9h 43m

1 stop

PHL7:30 amPhiladelphia

$440

Find similar

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 11/4

6:15 am-10:37 am

1 stop28h 22m

Islip Long Island

Sat 11/8

4:58 pm-8:21 am

2 stops15h 23m

$316

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 11/4

6:15 am-5:42 pm

1 stop11h 27m

Islip Long Island

Fri 11/7

4:58 pm-6:38 pm

2 stops25h 40m

$372

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 11/4

6:15 am-5:42 pm

1 stop11h 27m

Islip Long Island

Fri 11/7

4:58 pm-1:24 am

1 stop8h 26m

$385

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 11/4

6:15 am-10:37 am

1 stop28h 22m

Islip Long Island

Sat 11/8

8:45 pm-11:29 am

1 stop14h 44m

$413

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 11/4

3:10 pm-11:04 am

2 stops19h 54m

Islip Long Island

Fri 11/7

7:30 am-10:47 pm

2 stops15h 17m

$1,254

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 11/4

3:10 pm-11:04 am

2 stops19h 54m

Islip Long Island

Sat 11/8

9:59 am-11:53 pm

2 stops13h 54m

$1,286

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sat 11/22

4:43 pm-10:09 am

2 stops17h 26m

$109

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sat 11/22

2:41 pm-10:09 am

1 stop19h 28m

$110

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 11/4

6:00 am-10:37 am

2 stops28h 37m

$127

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 11/4

6:15 am-5:42 pm

1 stop11h 27m

$136

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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

Direct flights	None

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 27m 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.