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Cheap flights from Philadelphia to New York from $102

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 4/16. 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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Find the cheapest flights from Philadelphia to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:30 am - 11:10 am
PHL
-
ISP
26h 40m
1 stop
Multiple Airlines Logo
11:59 am - 1:56 pm
ISP
-
PHL
25h 57m
1 stop
$311Multiple Airlines
Tue, Mar 17 - Tue, Mar 24
Frontier Logo
8:01 pm - 9:08 am
PHL
-
ISP
13h 07m
1 stop
Frontier Logo
10:03 am - 10:38 am
ISP
-
PHL
24h 35m
1 stop
$344Frontier
Fri, Aug 14 - Mon, Aug 17
Multiple Airlines Logo
5:45 pm - 11:14 am
PHL
-
ISP
17h 29m
1 stop
Multiple Airlines Logo
2:31 pm - 6:24 pm
ISP
-
PHL
27h 53m
1 stop
$348Multiple Airlines
Mon, Mar 16 - Fri, Mar 20
Multiple Airlines Logo
9:30 am - 11:10 am
PHL
-
ISP
25h 40m
2 stops
Multiple Airlines Logo
11:59 am - 1:56 pm
ISP
-
PHL
25h 57m
1 stop
$352Multiple Airlines
Tue, Mar 17 - Tue, Mar 24
Frontier Logo
8:01 pm - 9:08 am
PHL
-
ISP
13h 07m
1 stop
Frontier Logo
10:03 am - 11:49 am
ISP
-
PHL
25h 46m
2 stops
$383Frontier
Fri, Aug 14 - Mon, Aug 17
Multiple Airlines Logo
5:05 am - 3:49 pm
PHL
-
ISP
10h 44m
1 stop
Multiple Airlines Logo
8:45 pm - 10:50 pm
ISP
-
PHL
26h 05m
2 stops
$388Multiple Airlines
Thu, Mar 19 - Mon, Mar 23
Multiple Airlines Logo
5:45 pm - 11:14 am
PHL
-
ISP
17h 29m
1 stop
Multiple Airlines Logo
2:31 pm - 10:59 am
ISP
-
PHL
20h 28m
2 stops
$433Multiple Airlines
Mon, Mar 16 - Fri, Mar 20
Multiple Airlines Logo
5:05 am - 3:49 pm
PHL
-
ISP
10h 44m
1 stop
Multiple Airlines Logo
7:20 pm - 1:56 pm
ISP
-
PHL
18h 36m
1 stop
$457Multiple Airlines
Thu, Mar 19 - Mon, Mar 23
Multiple Airlines Logo
8:00 am - 1:28 pm
PHL
-
ISP
5h 28m
1 stop
Multiple Airlines Logo
7:30 am - 11:37 pm
ISP
-
PHL
16h 07m
2 stops
$476Multiple Airlines
Fri, Jun 5 - Sun, Jun 7
Frontier Logo
8:01 pm - 9:08 am
PHL
-
ISP
13h 07m
1 stop
Frontier Logo
10:03 am - 11:48 pm
ISP
-
PHL
13h 45m
1 stop
$507Frontier
Fri, Jul 10 - Sun, Jul 12

Frontier flights from Philadelphia to Islip, New York

Our best Frontier deals on Philadelphia to Islip, New York flight tickets
Frontier
Aug 14
PHL8:01 pmPhiladelphia
13h 07m
1 stop
ISP9:08 amIslip Long Island
Aug 17
ISP10:03 amIslip Long Island
24h 35m
1 stop
PHL10:38 amPhiladelphia
$344
Frontier
Aug 14
PHL8:01 pmPhiladelphia
13h 07m
1 stop
ISP9:08 amIslip Long Island
Aug 17
ISP10:03 amIslip Long Island
25h 46m
2 stops
PHL11:49 amPhiladelphia
$383
Frontier
Mar 11
PHL8:37 pmPhiladelphia
19h 36m
1 stop
ISP4:13 pmIslip Long Island
Mar 13
ISP1:42 pmIslip Long Island
10h 59m
1 stop
PHL12:41 amPhiladelphia
$488

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 March 6, 2026.
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

Cheapest round-trip

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 3/17

8:30 am-11:10 am

1 stop26h 40m

Islip Long Island

Tue 3/24

11:59 am-1:56 pm

1 stop25h 57m

$311

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 8/14

8:01 pm-9:08 am

1 stop13h 07m

Islip Long Island

Mon 8/17

10:03 am-10:38 am

1 stop24h 35m

$344

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Mon 3/16

5:45 pm-11:14 am

1 stop17h 29m

Islip Long Island

Fri 3/20

2:31 pm-6:24 pm

1 stop27h 53m

$348

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 3/17

9:30 am-11:10 am

2 stops25h 40m

Islip Long Island

Tue 3/24

11:59 am-1:56 pm

1 stop25h 57m

$352

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 8/14

8:01 pm-9:08 am

1 stop13h 07m

Islip Long Island

Mon 8/17

10:03 am-11:49 am

2 stops25h 46m

$383

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 3/19

5:05 am-3:49 pm

1 stop10h 44m

Islip Long Island

Mon 3/23

8:45 pm-10:50 pm

2 stops26h 05m

$388

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Mon 3/16

5:45 pm-11:14 am

1 stop17h 29m

Islip Long Island

Fri 3/20

2:31 pm-10:59 am

2 stops20h 28m

$433

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 3/19

5:05 am-3:49 pm

1 stop10h 44m

Islip Long Island

Mon 3/23

7:20 pm-1:56 pm

1 stop18h 36m

$457
Quickest round-trip

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 6/5

8:00 am-1:28 pm

1 stop5h 28m

Islip Long Island

Sun 6/7

7:30 am-11:37 pm

2 stops16h 07m

$476

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 7/10

8:01 pm-9:08 am

1 stop13h 07m

Islip Long Island

Sun 7/12

10:03 am-11:48 pm

1 stop13h 45m

$507

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

Fastest flight time

5h 28m

Direct flights

None
The fastest flight from Philadelphia to Islip, New York takes 5h 28m
There are no direct flights from Philadelphia to Islip, New York. There are no popular flight routes from Philadelphia to Islip, New York.
Search flight deals

  • How far is Philadelphia to Islip Long Island by plane?

    There are 115.4 mi between Philadelphia and Islip Long Island. 5h 28m 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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