Cheap flights from Islip to Philadelphia (ISP - PHL)

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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 2021: 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 to Philadelphia?

Thursday is generally a great day to depart. Flying on this day could help you save up to 95%.

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

To save up to 26% on this flight, we recommend booking at least 23 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Islip to Philadelphia from $179 1-2 weeks out and tickets from $231 for flights departing within the next 72 hours.

What is the cheapest month to fly from Islip to Philadelphia?

Flights from Islip to Philadelphia lean towards being more expensive in December. Prices are generally better when you fly from Islip to Philadelphia in July, with the cheapest ticket starting at $52.

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

Unlike in the morning, when flights are generally more expensive, you can save up to 35% on flights from Islip to Philadelphia by exploring options for tickets at noon.

Cheap flights from Islip to Philadelphia in July, August 2021

The best prices found for ISP to PHL flights for July, August
20 Aug - 22 Aug
$213pp
ISP
Islip Long Island
Frontier
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Frontier
 
1 STOP
ISP
Islip Long Island
20 Aug - 22 Aug
$250pp
ISP
Islip Long Island
Multiple Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Frontier
 
1 STOP
ISP
Islip Long Island
20 Aug - 22 Aug
$286pp
ISP
Islip Long Island
American Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
American Airlines
Non-Stop
ISP
Islip Long Island

Islip to Philadelphia 2021 flight deals

Cheap flights to Philadelphia from Islip found for this year
20 Aug - 22 Aug
$213pp
ISP
Islip Long Island
Frontier
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Frontier
 
1 STOP
ISP
Islip Long Island
29 Sep - 2 Oct
$232pp
ISP
Islip Long Island
American Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
American Airlines
Non-Stop
ISP
Islip Long Island
20 Aug - 22 Aug
$250pp
ISP
Islip Long Island
Multiple Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Frontier
 
1 STOP
ISP
Islip Long Island

Non-stop flights to Philadelphia from Islip

Save time with Islip to Philadelphia direct flight deals
29 Sep - 2 Oct
$232pp
ISP
Islip Long Island
American Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
American Airlines
Non-Stop
ISP
Islip Long Island
20 Aug - 22 Aug
$286pp
ISP
Islip Long Island
American Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
American Airlines
Non-Stop
ISP
Islip Long Island
21 Aug - 28 Aug
$329pp
ISP
Islip Long Island
American Airlines
Non-Stop
PHL
Philadelphia
PHL
Philadelphia
American Airlines
Non-Stop
ISP
Islip Long Island

One-way flights to Philadelphia from Islip

The cheapest one-way flights from Islip to Philadelphia
12:33 pm - 7:25 am
Frontier
1 Stop
18h 52m
ISP - PHL
Frontier
$257
Kiwi.com
2:25 am - 3:34 am
American Airlines
Nonstop
1h 09m
ISP - PHL
American Airlines
10:42 am - 1:59 pm
Linear Air Taxi
1 Stop
3h 17m
ISP - PHL
Linear Air Taxi
$1,816
AirfareAssist

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

Are flight prices decreasing from Islip to Philadelphia due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Islip and Philadelphia for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

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.

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 are 2 flights from Long Island to Philadelphia per day from 1 airline.

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

Yes, there are multiple flights from Islip to Philadelphia for under $200. The cheapest flight booked recently is on Frontier for just $194, but on average you can expect to pay $844.

Are there nonstop flights from Islip to Philadelphia for under $300 on Cheapflights?

Cheapflights has at least 5 direct flights from Islip to Philadelphia under $300. A good price for a nonstop flight from Islip to Philadelphia is less than $352.

How many flights depart from Islip to Philadelphia on average per day?

4 flight departures from Islip Long Island to Philadelphia per day on average.
Afternoon (Noon - 6pm) - 100% of flight departures

Does it rain more in Islip or Philadelphia?

When traveling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Islip is roughly less than Philadelphia. You can assume this to be the case over the next 13 days.

Is Islip weather warmer or cooler than Philadelphia?

With an average temperature of 88 °F, peak weather can be found in July. As a traveler, expect to see changes in flight prices during that period. The temperatures in Philadelphia are hotter than in Islip.

How long is the flight from Islip to Philadelphia?

A quick flight from Islip to Philadelphia can take about 1h 08m. American Airlines provides one of the quickest options available for as low as $329. There are 130 mi between Islip and Philadelphia. This flight may include one or multiple stops.

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

Flying on Frontier is currently your cheapest option to Philadelphia, with prices starting at $194. Additional round-trip tickets that might be worth considering are offered by American Airlines and Linear Air Taxi, with the lowest prices starting at $232 and $1,396, respectively. These flights start at 54% lower than the current average price 3 months from now.

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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $111. American Airlines flights start at $197 while deals on Linear Air Taxi start at $1,808 one-way.

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 72 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 72 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
1h 07m
Average temperature for July in Philadelphia
87.8 °F
Avg rainfall for July in Philadelphia
4.5 ″

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.
Afternoon Noon to 6 PM 72% of ISP to PHL departures
Early morning Midnight to 6 AM 28% of ISP to PHL departures
Morning 6 AM to noon 0% 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
3 daily flights
Tuesday
1 daily flight
Wednesday
1 daily flight
Thursday
3 daily flights
Friday
1 daily flight
Saturday
3 daily flights
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