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Cheap flights from Philadelphia to New York from $231

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 7/13. 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
1 adult, Economy, 0 bags

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
5:28 pm - 11:20 am
PHL
-
ISP
17h 52m
2 stops
Multiple Airlines Logo
3:02 pm - 11:27 pm
ISP
-
PHL
8h 25m
1 stop
$355Multiple Airlines
Tue, Sep 29 - Fri, Oct 2
Multiple Airlines Logo
7:42 am - 11:20 am
PHL
-
ISP
27h 38m
1 stop
Multiple Airlines Logo
3:02 pm - 11:27 pm
ISP
-
PHL
8h 25m
1 stop
$372Multiple Airlines
Tue, Sep 29 - Fri, Oct 2
Multiple Airlines Logo
7:20 am - 4:47 pm
PHL
-
ISP
9h 27m
1 stop
Multiple Airlines Logo
3:34 pm - 8:06 pm
ISP
-
PHL
28h 32m
1 stop
$379Multiple Airlines
Tue, Jul 14 - Sat, Jul 18
Multiple Airlines Logo
9:57 am - 12:20 pm
PHL
-
ISP
26h 23m
1 stop
Multiple Airlines Logo
7:49 pm - 7:15 am
ISP
-
PHL
35h 26m
2 stops
$401Multiple Airlines
Sun, Jul 26 - Sun, Aug 2
Multiple Airlines Logo
9:57 am - 5:29 pm
PHL
-
ISP
7h 32m
1 stop
Multiple Airlines Logo
10:57 am - 8:00 pm
ISP
-
PHL
9h 03m
1 stop
$402Multiple Airlines
Sat, Jul 11 - Wed, Jul 15
Multiple Airlines Logo
4:40 pm - 7:01 pm
PHL
-
ISP
26h 21m
2 stops
Multiple Airlines Logo
2:28 pm - 11:15 am
ISP
-
PHL
20h 47m
1 stop
$406Multiple Airlines
Fri, Jul 24 - Fri, Jul 31
Multiple Airlines Logo
9:57 am - 12:20 pm
PHL
-
ISP
26h 23m
1 stop
Multiple Airlines Logo
7:49 pm - 7:20 pm
ISP
-
PHL
23h 31m
2 stops
$407Multiple Airlines
Sun, Jul 12 - Thu, Jul 16
Frontier Logo
4:40 pm - 9:53 am
PHL
-
ISP
41h 13m
2 stops
Frontier Logo
10:57 am - 8:52 am
ISP
-
PHL
21h 55m
1 stop
$427Frontier
Mon, Jul 27 - Mon, Aug 3
Frontier Logo
5:16 pm - 9:53 am
PHL
-
ISP
16h 37m
2 stops
Frontier Logo
3:34 pm - 8:06 pm
ISP
-
PHL
28h 32m
1 stop
$429Frontier
Tue, Jul 14 - Sat, Jul 18
Multiple Airlines Logo
7:55 am - 7:01 pm
PHL
-
ISP
11h 06m
1 stop
Multiple Airlines Logo
2:28 pm - 11:15 am
ISP
-
PHL
20h 47m
1 stop
$433Multiple Airlines
Fri, Jul 24 - Fri, Jul 31

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JetBlue flights from Philadelphia to Islip, New York

Our best JetBlue deals on Philadelphia to Islip, New York flight tickets
JetBlue
Jul 25
PHL8:05 amPhiladelphia
13h 39m
1 stop
ISP9:44 pmIslip Long Island
Aug 1
ISP6:00 amIslip Long Island
10h 07m
1 stop
PHL4:07 pmPhiladelphia
$476
JetBlue
Jul 25
PHL8:05 amPhiladelphia
13h 39m
1 stop
ISP9:44 pmIslip Long Island
Aug 1
ISP6:00 amIslip Long Island
10h 07m
1 stop
PHL4:07 pmPhiladelphia
$520
JetBlue
Jul 26
PHL8:02 amPhiladelphia
13h 42m
1 stop
ISP9:44 pmIslip Long Island
Aug 2
ISP6:00 amIslip Long Island
10h 07m
1 stop
PHL4:07 pmPhiladelphia
$663

Frontier flights from Philadelphia to Islip, New York

Our best Frontier deals on Philadelphia to Islip, New York flight tickets
Frontier
Jul 27
PHL4:40 pmPhiladelphia
41h 13m
2 stops
ISP9:53 amIslip Long Island
Aug 3
ISP10:57 amIslip Long Island
21h 55m
1 stop
PHL8:52 amPhiladelphia
$427
Frontier
Jul 14
PHL5:16 pmPhiladelphia
16h 37m
2 stops
ISP9:53 amIslip Long Island
Jul 18
ISP3:34 pmIslip Long Island
28h 32m
1 stop
PHL8:06 pmPhiladelphia
$429
Frontier
Aug 21
PHL5:16 pmPhiladelphia
16h 37m
1 stop
ISP9:53 amIslip Long Island
Aug 23
ISP10:57 amIslip Long Island
13h 02m
1 stop
PHL11:59 pmPhiladelphia
$533

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 June 29, 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 9/29

5:28 pm-11:20 am

2 stops17h 52m

Islip Long Island

Fri 10/2

3:02 pm-11:27 pm

1 stop8h 25m

$355

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 9/29

7:42 am-11:20 am

1 stop27h 38m

Islip Long Island

Fri 10/2

3:02 pm-11:27 pm

1 stop8h 25m

$372

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 7/14

7:20 am-4:47 pm

1 stop9h 27m

Islip Long Island

Sat 7/18

3:34 pm-8:06 pm

1 stop28h 32m

$379

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sun 7/26

9:57 am-12:20 pm

1 stop26h 23m

Islip Long Island

Sun 8/2

7:49 pm-7:15 am

2 stops35h 26m

$401
Quickest round-trip

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sat 7/11

9:57 am-5:29 pm

1 stop7h 32m

Islip Long Island

Wed 7/15

10:57 am-8:00 pm

1 stop9h 03m

$402

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 7/24

4:40 pm-7:01 pm

2 stops26h 21m

Islip Long Island

Fri 7/31

2:28 pm-11:15 am

1 stop20h 47m

$406

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sun 7/12

9:57 am-12:20 pm

1 stop26h 23m

Islip Long Island

Thu 7/16

7:49 pm-7:20 pm

2 stops23h 31m

$407

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Mon 7/27

4:40 pm-9:53 am

2 stops41h 13m

Islip Long Island

Mon 8/3

10:57 am-8:52 am

1 stop21h 55m

$427

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 7/14

5:16 pm-9:53 am

2 stops16h 37m

Islip Long Island

Sat 7/18

3:34 pm-8:06 pm

1 stop28h 32m

$429

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 7/24

7:55 am-7:01 pm

1 stop11h 06m

Islip Long Island

Fri 7/31

2:28 pm-11:15 am

1 stop20h 47m

$433

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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

6h 08m

Direct flights

None
The fastest flight from Philadelphia to Islip, New York takes 6h 08m
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

Frequently asked questions about flying 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. 6h 08m 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
Southampton
Sag Harbor
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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Wed 7/29
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