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Cheap flights from Philadelphia to New York from $237

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 7/12. 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
6:16 pm - 2:55 pm
PHL
-
ISP
20h 39m
2 stops
Multiple Airlines Logo
11:50 am - 4:36 pm
ISP
-
PHL
4h 46m
1 stop
$246Multiple Airlines
Thu, Apr 23 - Sat, Apr 25
Multiple Airlines Logo
6:16 pm - 1:31 pm
PHL
-
ISP
19h 15m
1 stop
Multiple Airlines Logo
11:50 am - 4:36 pm
ISP
-
PHL
4h 46m
1 stop
$247Multiple Airlines
Thu, Apr 23 - Sat, Apr 25
Frontier Logo
9:19 am - 4:12 pm
PHL
-
ISP
6h 53m
1 stop
Frontier Logo
5:07 pm - 11:18 am
ISP
-
PHL
18h 11m
2 stops
$315Frontier
Fri, Feb 27 - Sun, Mar 1
Multiple Airlines Logo
12:46 pm - 11:10 am
PHL
-
ISP
22h 24m
1 stop
Multiple Airlines Logo
11:50 am - 4:52 pm
ISP
-
PHL
5h 02m
1 stop
$333Multiple Airlines
Fri, Mar 20 - Sat, Mar 28
Multiple Airlines Logo
7:10 pm - 11:10 am
PHL
-
ISP
16h 00m
2 stops
Multiple Airlines Logo
11:50 am - 4:52 pm
ISP
-
PHL
5h 02m
1 stop
$358Multiple Airlines
Fri, Mar 20 - Sat, Mar 28
Multiple Airlines Logo
9:19 am - 4:12 pm
PHL
-
ISP
6h 53m
1 stop
Multiple Airlines Logo
5:51 pm - 11:16 pm
ISP
-
PHL
29h 25m
1 stop
$360Multiple Airlines
Fri, Feb 27 - Sun, Mar 1
Multiple Airlines Logo
7:55 am - 6:55 pm
PHL
-
ISP
11h 00m
1 stop
Multiple Airlines Logo
4:34 pm - 8:07 am
ISP
-
PHL
15h 33m
2 stops
$557Multiple Airlines
Sat, Mar 14 - Sun, Mar 15
Multiple Airlines Logo
7:55 am - 6:55 pm
PHL
-
ISP
11h 00m
1 stop
Multiple Airlines Logo
4:34 pm - 7:36 am
ISP
-
PHL
15h 02m
1 stop
$685Multiple Airlines
Sat, Mar 14 - Sun, Mar 15
Multiple Airlines Logo
5:30 am - 6:44 pm
PHL
-
ISP
13h 14m
2 stops
Multiple Airlines Logo
9:59 am - 11:16 pm
ISP
-
PHL
13h 17m
2 stops
$1,037Multiple Airlines
Fri, Feb 27 - Sun, Mar 1
JetBlue Logo
7:00 am - 7:30 pm
PHL
-
ISP
12h 30m
1 stop
JetBlue Logo
8:25 am - 5:37 pm
ISP
-
PHL
9h 12m
1 stop
$1,304JetBlue
Fri, Mar 20 - Mon, Mar 23

JetBlue flights from Philadelphia to Islip, New York

Our best JetBlue deals on Philadelphia to Islip, New York flight tickets
JetBlue
Mar 20
PHL7:00 amPhiladelphia
12h 30m
1 stop
ISP7:30 pmIslip Long Island
Mar 23
ISP8:25 amIslip Long Island
9h 12m
1 stop
PHL5:37 pmPhiladelphia
$1,304
JetBlue
Mar 20
PHL9:54 amPhiladelphia
9h 36m
2 stops
ISP7:30 pmIslip Long Island
Mar 23
ISP8:25 amIslip Long Island
9h 12m
1 stop
PHL5:37 pmPhiladelphia
$1,487

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 February 17, 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

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 4/23

6:16 pm-2:55 pm

2 stops20h 39m

Islip Long Island

Sat 4/25

11:50 am-4:36 pm

1 stop4h 46m

$246

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 4/23

6:16 pm-1:31 pm

1 stop19h 15m

Islip Long Island

Sat 4/25

11:50 am-4:36 pm

1 stop4h 46m

$247

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 2/27

9:19 am-4:12 pm

1 stop6h 53m

Islip Long Island

Sun 3/1

5:07 pm-11:18 am

2 stops18h 11m

$315

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 3/20

12:46 pm-11:10 am

1 stop22h 24m

Islip Long Island

Sat 3/28

11:50 am-4:52 pm

1 stop5h 02m

$333

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 3/20

7:10 pm-11:10 am

2 stops16h 00m

Islip Long Island

Sat 3/28

11:50 am-4:52 pm

1 stop5h 02m

$358

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 2/27

9:19 am-4:12 pm

1 stop6h 53m

Islip Long Island

Sun 3/1

5:51 pm-11:16 pm

1 stop29h 25m

$360

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sat 3/14

7:55 am-6:55 pm

1 stop11h 00m

Islip Long Island

Sun 3/15

4:34 pm-8:07 am

2 stops15h 33m

$557

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sat 3/14

7:55 am-6:55 pm

1 stop11h 00m

Islip Long Island

Sun 3/15

4:34 pm-7:36 am

1 stop15h 02m

$685

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 2/27

5:30 am-6:44 pm

2 stops13h 14m

Islip Long Island

Sun 3/1

9:59 am-11:16 pm

2 stops13h 17m

$1,037

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 3/20

7:00 am-7:30 pm

1 stop12h 30m

Islip Long Island

Mon 3/23

8:25 am-5:37 pm

1 stop9h 12m

$1,304

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
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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

15h 20m

Direct flights

None
The fastest flight from Philadelphia to Islip, New York takes 15h 20m
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. 15h 20m 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.

  • How do I get Price Alerts for flights from Philadelphia to Islip, New York?

    Search flight deals from Philadelphia to Islip, New York. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Philadelphia to Islip, New York with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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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