Cheap flights from Philadelphia to New York from $109

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to New York departing on 11/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:15 am - 10:37 amPHL-ISP
28h 22m1 stop
Multiple Airlines Logo
4:58 pm - 8:21 amISP-PHL
15h 23m2 stops
$316Multiple Airlines
Find Deal
Tue, Nov 4 - Sat, Nov 8
Multiple Airlines Logo
6:15 am - 5:42 pmPHL-ISP
11h 27m1 stop
Multiple Airlines Logo
4:58 pm - 6:38 pmISP-PHL
25h 40m2 stops
$372Multiple Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 7
Multiple Airlines Logo
6:15 am - 5:42 pmPHL-ISP
11h 27m1 stop
Multiple Airlines Logo
4:58 pm - 1:24 amISP-PHL
8h 26m1 stop
$385Multiple Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 7
Multiple Airlines Logo
6:15 am - 10:37 amPHL-ISP
28h 22m1 stop
Multiple Airlines Logo
8:45 pm - 11:29 amISP-PHL
14h 44m1 stop
$413Multiple Airlines
Find Deal
Tue, Nov 4 - Sat, Nov 8
Multiple Airlines Logo
3:10 pm - 11:04 amPHL-ISP
19h 54m2 stops
Multiple Airlines Logo
7:30 am - 10:47 pmISP-PHL
15h 17m2 stops
$1,254Multiple Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 7
Multiple Airlines Logo
3:10 pm - 11:04 amPHL-ISP
19h 54m2 stops
Multiple Airlines Logo
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
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
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

momondo Fare Finder

 
Customize your flight search to find flights from Philadelphia to Islip, New York that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 22, 2025.
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
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See travel insights to New York from

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.
  • 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.

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
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.

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1 adult
Fri 11/21
Fri 11/28

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