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Cheap flights from Philadelphia to New York from $148

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 9/8. 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
8:48 am - 7:59 pm
PHL
-
ISP
11h 11m
1 stop
Multiple Airlines Logo
4:13 pm - 1:12 pm
ISP
-
PHL
20h 59m
2 stops
$340Multiple Airlines
Fri, Sep 11 - Sun, Sep 13
Multiple Airlines Logo
8:48 am - 7:59 pm
PHL
-
ISP
11h 11m
1 stop
Multiple Airlines Logo
4:13 pm - 9:32 am
ISP
-
PHL
17h 19m
1 stop
$372Multiple Airlines
Fri, Sep 11 - Sun, Sep 13
Frontier Logo
6:04 pm - 10:03 am
PHL
-
ISP
15h 59m
1 stop
Frontier Logo
10:48 am - 8:51 am
ISP
-
PHL
22h 03m
1 stop
$373Frontier
Thu, Sep 3 - Mon, Sep 7
Multiple Airlines Logo
9:16 pm - 9:53 am
PHL
-
ISP
12h 37m
1 stop
Multiple Airlines Logo
11:57 am - 1:09 am
ISP
-
PHL
13h 12m
2 stops
$384Multiple Airlines
Tue, Jul 14 - Wed, Jul 15
Multiple Airlines Logo
6:04 pm - 10:03 am
PHL
-
ISP
15h 59m
1 stop
Multiple Airlines Logo
2:28 pm - 8:51 am
ISP
-
PHL
18h 23m
2 stops
$407Multiple Airlines
Thu, Sep 3 - Mon, Sep 7
JetBlue Logo
8:05 am - 9:44 pm
PHL
-
ISP
13h 39m
1 stop
JetBlue Logo
6:00 am - 4:07 pm
ISP
-
PHL
10h 07m
1 stop
$423JetBlue
Tue, Jul 14 - Wed, Jul 15
JetBlue Logo
7:00 am - 2:12 pm
PHL
-
ISP
7h 12m
1 stop
JetBlue Logo
4:58 pm - 11:53 pm
ISP
-
PHL
6h 55m
1 stop
$439JetBlue
Tue, Jul 7 - Tue, Jul 7
JetBlue Logo
7:00 am - 2:12 pm
PHL
-
ISP
7h 12m
1 stop
JetBlue Logo
6:00 am - 4:07 pm
ISP
-
PHL
10h 07m
1 stop
$445JetBlue
Wed, Jul 8 - Wed, Jul 15
Multiple Airlines Logo
10:11 am - 8:57 pm
PHL
-
ISP
10h 46m
1 stop
Multiple Airlines Logo
5:27 pm - 12:22 pm
ISP
-
PHL
18h 55m
2 stops
$450Multiple Airlines
Wed, Jul 1 - Tue, Jul 7
Multiple Airlines Logo
10:11 am - 8:57 pm
PHL
-
ISP
10h 46m
1 stop
Multiple Airlines Logo
5:27 pm - 11:15 am
ISP
-
PHL
17h 48m
1 stop
$468Multiple Airlines
Wed, Jul 1 - Tue, Jul 7

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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 14
PHL8:05 amPhiladelphia
13h 39m
1 stop
ISP9:44 pmIslip Long Island
Jul 15
ISP6:00 amIslip Long Island
10h 07m
1 stop
PHL4:07 pmPhiladelphia
$423
JetBlue
Jul 7
PHL7:00 amPhiladelphia
7h 12m
1 stop
ISP2:12 pmIslip Long Island
Jul 7
ISP4:58 pmIslip Long Island
6h 55m
1 stop
PHL11:53 pmPhiladelphia
$439
JetBlue
Jul 8
PHL7:00 amPhiladelphia
7h 12m
1 stop
ISP2:12 pmIslip Long Island
Jul 15
ISP6:00 amIslip Long Island
10h 07m
1 stop
PHL4:07 pmPhiladelphia
$445

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 14, 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

Fri 9/11

8:48 am-7:59 pm

1 stop11h 11m

Islip Long Island

Sun 9/13

4:13 pm-1:12 pm

2 stops20h 59m

$340

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 9/11

8:48 am-7:59 pm

1 stop11h 11m

Islip Long Island

Sun 9/13

4:13 pm-9:32 am

1 stop17h 19m

$372

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 9/3

6:04 pm-10:03 am

1 stop15h 59m

Islip Long Island

Mon 9/7

10:48 am-8:51 am

1 stop22h 03m

$373

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 7/14

9:16 pm-9:53 am

1 stop12h 37m

Islip Long Island

Wed 7/15

11:57 am-1:09 am

2 stops13h 12m

$384

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 9/3

6:04 pm-10:03 am

1 stop15h 59m

Islip Long Island

Mon 9/7

2:28 pm-8:51 am

2 stops18h 23m

$407

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 7/14

8:05 am-9:44 pm

1 stop13h 39m

Islip Long Island

Wed 7/15

6:00 am-4:07 pm

1 stop10h 07m

$423
Quickest round-trip

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 7/7

7:00 am-2:12 pm

1 stop7h 12m

Islip Long Island

Tue 7/7

4:58 pm-11:53 pm

1 stop6h 55m

$439

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Wed 7/8

7:00 am-2:12 pm

1 stop7h 12m

Islip Long Island

Wed 7/15

6:00 am-4:07 pm

1 stop10h 07m

$445

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Wed 7/1

10:11 am-8:57 pm

1 stop10h 46m

Islip Long Island

Tue 7/7

5:27 pm-12:22 pm

2 stops18h 55m

$450

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Wed 7/1

10:11 am-8:57 pm

1 stop10h 46m

Islip Long Island

Tue 7/7

5:27 pm-11:15 am

1 stop17h 48m

$468

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

7h 28m

Direct flights

None
The fastest flight from Philadelphia to Islip, New York takes 7h 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

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. 7h 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.

Frequently asked questions about flying from Philadelphia to Islip, New York

  • 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
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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