PHL - ISP

$360 Find Cheap Flights from Philadelphia to Islip - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$360
Typical prices: $238-$1,417
Multiple Airlines
Sat 11/10Mon 11/12
PHL - ISP • 2 stops
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Cheap Flights from Philadelphia to Islip (PHL-ISP)

 

Cheap flights from Philadelphia to Islip with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Tue, Nov 10 - Thu, Nov 12
Multiple Airlines Logo
5:14 pm - 11:20 amPHL  Philadelphia-ISP Islip Long Island
18h 06m2 stops Atlanta Hartsfield-Jackson Raleigh-Durham
Multiple Airlines Logo
10:57 am - 4:24 pmISP  Islip Long Island-PHL Philadelphia
5h 27m1 stop Raleigh-Durham
$360Multiple Airlines
Mon, Nov 2 - Wed, Nov 4
Multiple Airlines Logo
7:20 pm - 11:20 amPHL  Philadelphia-ISP Islip Long Island
16h 00m1 stop Raleigh-Durham
Multiple Airlines Logo
12:00 pm - 11:16 pmISP  Islip Long Island-PHL Philadelphia
11h 16m2 stops Raleigh-Durham Atlanta Hartsfield-Jackson
$417Multiple Airlines
Tue, Nov 10 - Thu, Nov 12
Southwest Logo
6:25 am - 3:30 pmPHL  Philadelphia-ISP Islip Long Island
9h 05m1 stop Orlando
Southwest Logo
4:25 pm - 11:10 pmISP  Islip Long Island-PHL Philadelphia
6h 45m1 stop Orlando
$516Southwest
Mon, Nov 2 - Wed, Nov 4
Multiple Airlines Logo
7:42 am - 2:22 pmPHL  Philadelphia-ISP Islip Long Island
6h 40m1 stop Raleigh-Durham
Multiple Airlines Logo
6:08 pm - 11:15 amISP  Islip Long Island-PHL Philadelphia
17h 07m1 stop Myrtle Beach Intl
$551Multiple Airlines
Sat, Nov 7 - Sun, Nov 8
JetBlue Logo
6:00 am - 9:37 pmPHL  Philadelphia-ISP Islip Long Island
15h 37m1 stop Fort Lauderdale
JetBlue Logo
6:00 am - 11:43 pmISP  Islip Long Island-PHL Philadelphia
17h 43m1 stop Fort Lauderdale
$817JetBlue
Sat, Nov 7 - Sun, Nov 8
JetBlue Logo
8:15 am - 9:37 pmPHL  Philadelphia-ISP Islip Long Island
13h 22m1 stop Fort Lauderdale
JetBlue Logo
6:00 am - 11:43 pmISP  Islip Long Island-PHL Philadelphia
17h 43m1 stop Fort Lauderdale
$911JetBlue

Price, demand and travel trends for Philadelphia to Islip flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Which airline is the cheapest to fly from Philadelphia to Islip?

Southwest ($516) and JetBlue ($817) are the cheapest airlines to fly round-trip from Philadelphia to Islip according to KAYAK data over the last 5 days.

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Key details for Philadelphia to Islip flights

Cheapest flight

$360
Round-trip flight from Philadelphia to Islip

When to book flights from Philadelphia to Islip

Are your dates flexible? Find out the best times to travel from Philadelphia to Islip based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Philadelphia to Islip flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Philadelphia to Islip?

    Only Economy Class is available on flights from Philadelphia to Islip.

  • Do I need a passport to fly from Philadelphia to Islip?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • Have flight prices from Philadelphia to Islip changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $360 to $911. That means the highest observed fare was about 3x higher than the lowest one.

  • What car rental options are available at Islip Long Island Airport (ISP)?

    Islip Long Island Airport (ISP) hosts 5 major car rental companies, with daily rates starting from around $38 for economy cars. Top options include:

    • Budget
    • Enterprise Rent-A-Car
    • Avis
    • National
    • Empire Rent A Car

  • Which airports can I use when flying from Philadelphia to Islip?

    Flights from Philadelphia to Islip usually depart from Philadelphia (PHL) and arrive at Islip Long Island (ISP).

  • Can I save money by using flexible dates for flights from Philadelphia to Islip?

    Yes. Flexible dates can save you up to 84% on flights from Philadelphia to Islip. Monday is the cheapest departure day at $238 round-trip on average, while Saturday is the most expensive at $1,417, a difference of $1,179.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Your guide to booking Philadelphia to Islip flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Saturday. On this route, Monday flights average $238, about $1,179 less than Saturday fares (83% savings) based on the last 12 months.

More options for your flight from Philadelphia to Islip

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