Cheap flights from Islip to Philadelphia (ISP - PHL)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

How to find the cheapest flight from
Islip (ISP) to Philadelphia (PHL)

All the information you need to plan the best ISP to PHL flight in 2022: compare Islip to Philadelphia flight prices with the expected peak season, weather and rainfall in Philadelphia.
What is the cheapest day to fly round-trip from Islip, New York to Philadelphia?

Friday flights are found to be more expensive to fly from Islip, New York to Philadelphia. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Philadelphia.

How far in advance should I book a flight from Islip, New York to Philadelphia?

To save on the cost of your flight from Islip, New York to Philadelphia, book at least 53 days before your planned departure. Booking around this time can save you about 111% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $350 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $499.

When is the cheapest time to fly from Islip, New York to Philadelphia (ISP - PHL)?

It’s optimal to fly from Islip, New York to Philadelphia at noon. By choosing this option you can save up to 35% on the cost of your flight, compared to a flight in the morning.

Cheap flights from Islip to Philadelphia in January, February 2022

The best prices found for ISP to PHL flights for January, February
26 Jan - 27 Jan
$140pp
ISP
Islip Long Island
Frontier
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Frontier
 
1 STOP
ISP
Islip Long Island
5 Feb - 6 Feb
$144pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Frontier
 
1 STOP
ISP
Islip Long Island
21 Jan - 22 Jan
$164pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Multiple Airlines
 
1 STOP
ISP
Islip Long Island

Islip Long Island to Philadelphia 2022 flight deals

Cheap flights to Philadelphia from Islip found for this year
26 Jan - 27 Jan
$140pp
ISP
Islip Long Island
Frontier
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Frontier
 
1 STOP
ISP
Islip Long Island
5 Feb - 6 Feb
$144pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Frontier
 
1 STOP
ISP
Islip Long Island
21 Jan - 22 Jan
$164pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Multiple Airlines
 
1 STOP
ISP
Islip Long Island

Non-stop flights to Philadelphia from Islip

Save time with Islip to Philadelphia direct flight deals
26 Jan - 2 Feb
$198pp
ISP
Islip Long Island
American Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
American Airlines
Non-Stop
ISP
Islip Long Island
7 Feb - 8 Feb
$246pp
ISP
Islip Long Island
American Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
American Airlines
Non-Stop
ISP
Islip Long Island
22 Feb - 24 Feb
$273pp
ISP
Islip Long Island
American Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
American Airlines
Non-Stop
ISP
Islip Long Island

Last minute flights from Islip to Philadelphia

Late deals on round-trip flights to Philadelphia from Islip, departing today and this week
21 Jan - 22 Jan
$164pp
ISP
Islip Long Island
Multiple Airlines
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Multiple Airlines
 
1 STOP
ISP
Islip Long Island
21 Jan - 22 Jan
$179pp
ISP
Islip Long Island
Multiple Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Multiple Airlines
 
1 STOP
ISP
Islip Long Island
21 Jan - 22 Jan
$362pp
ISP
Islip Long Island
Multiple Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Multiple Airlines
   
2 STOPS
ISP
Islip Long Island

One-way flights to Philadelphia from Islip

The cheapest one-way flights from Islip to Philadelphia
2:00 am - 3:22 am
American Airlines
Nonstop
1h 22m
ISP - PHL
American Airlines
4:00 pm - 8:34 am
Frontier
1 Stop
16h 34m
ISP - PHL
Frontier
$435
Kiwi.com
2:57 am - 6:14 am
Linear Air Taxi
1 Stop
3h 17m
ISP - PHL
Linear Air Taxi
$1,067
Priceline

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Islip</span> to <span class="emphasized">Philadelphia</span> flights.

Flight FAQs

From Islip to Philadelphia

What airports do I use to fly from Islip to Philadelphia?

If you book a flight from Islip to Philadelphia, you will be flying from Long Island to Philadelphia. Flights to Philadelphia (PHL) from Islip Long Island (ISP) take 0h 57m for a nonstop flight. There is 1 flight from Long Island to Philadelphia per day from 1 airline.

Which airlines flying from Islip Long Island to Philadelphia have flexible changes due to COVID-19?

American Airlines is one of the carriers that may have flexible change policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Islip, New York to Philadelphia for under $200 on Cheapflights?

Yes, there are multiple flights from Islip, New York to Philadelphia for under $200. The cheapest flight booked recently is on Frontier for just $140, but on average you can expect to pay $264.

Are there nonstop flights from Islip, New York to Philadelphia for under $200 on Cheapflights?

Cheapflights has at least 8 direct flights from Islip, New York to Philadelphia under $200. A good price for a nonstop flight from Islip, New York to Philadelphia is less than $341.

Are there last-minute flights available from Islip, New York to Philadelphia for under $200?

There are currently 7+ open flights from Islip, New York to Philadelphia within the next 7 days for less than $200.

What are the cheapest airlines flying from Islip, New York to Philadelphia round-trip?

Flying on Frontier is currently your cheapest option to Philadelphia, with prices starting at $140. Another option worth looking into is American Airlines, starting at $198 round trip. Frontier is currently priced 67% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Islip, New York to Philadelphia one-way?

$146 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Frontier and Linear Air Taxi, with prices starting from $320 and $1,063, respectively.

What are the cheapest flights from Islip, New York to Philadelphia?

Looking at all options, your cheapest flight can be booked for $215. While the most popular route (Islip Long Island - Philadelphia) can be booked for $144 on average our data indicates $442 when flying from Islip, New York to Philadelphia.

What are the most reliable airlines from Islip, New York to Philadelphia?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Islip, New York to Philadelphia on time: Qatar Airways (97%), American Airlines (96%), Piedmont Airlines (96%).

COVID Restrictions

View COVID Travel Restrictions for Philadelphia, PA

Do I need a COVID test to fly to Philadelphia from Islip?

Information is based on travel restrictions for travel to Philadelphia within the United States

Most visitors from Islip Long Island need to provide a negative COVID-19 test result and/or quarantine to enter Philadelphia.

COVID-19 testing requirements
Visitors from Islip Long Island must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Philadelphia.

Quarantine requirements
Visitors from Islip Long Island are not required to quarantine after entering Philadelphia.

Do I need a test to fly back to Islip from Philadelphia?

Returning to Islip Long Island from Philadelphia

COVID-19 testing requirements
Visitors from Philadelphia must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Islip Long Island.

Quarantine requirements
Visitors from Philadelphia are not required to quarantine after entering Islip Long Island.

Hide COVID Travel Restrictions for Philadelphia, PA

Alternative routes for Islip to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Philadelphia

Things to know before you go - useful duration and weather info for your trip from Islip to Philadelphia.
Flight duration from ISP to PHL
1h 10m
Average temperature for January in Philadelphia
44.6 °F
Avg rainfall for January in Philadelphia
3.2 ″

Airports servicing Islip

Airports servicing Philadelphia

Hourly flight availability from Islip to Philadelphia

See what time of day planes typically take off from Islip towards Philadelphia.
Morning 6 AM to noon 53% of ISP to PHL departures
Afternoon Noon to 6 PM 46% of ISP to PHL departures
Early morning Midnight to 6 AM 1% of ISP to PHL departures
Evening 6 PM to midnight 0% of ISP to PHL departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Islip to Philadelphia
See how many times per day planes take to the skies headed from Islip to Philadelphia.
Sunday
3 daily flights
Monday
1 daily flight
Tuesday
1 daily flight
Wednesday
1 daily flight
Thursday
3 daily flights
Friday
3 daily flights
Saturday
1 daily flight
Home North America USA Pennsylvania Philadelphia Cheap flights from Islip to Philadelphia