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Route

Islip → Philadelphia

ISPIslipLong Island MacArthur Airport
PHLPhiladelphiaPhiladelphia International Airport
Distance
129 mi
Estimated flight time
~45m

Same local time in Islip and Philadelphia.

Observed nonstop

View the reverse route

How often does this route fly?

Frequency

Daily at most

On average around 1 flights a day, observed from October 2025 to September 2026.

1
flights per day
1.5
busiest month · Jul
1
quietest month · Nov
48 min
measured flight time
7 / 12
months seen

Through the year

Per day, month by month

  1. –Jan2026
  2. –Feb
  3. 1Mar
  4. –Apr
  5. 1May
  6. 1Jun
  7. 1.5Jul
  8. –Aug
  9. 1Sep
  10. –Oct2025
  11. 1Nov
  12. 1Dec

Airlines

Who flies it

Frontier Airlinesnow and then

Through the day

Departure times

Local time in Islip. Most departures between 15:00 and 18:00.

  1. 00:00
  2. 01:00
  3. 02:00
  4. 03:00
  5. 04:00
  6. 05:00
  7. 06:00
  8. 07:00
  9. 08:00
  10. 09:00
  11. 10:00
  12. 11:00
  13. 12:00
  14. 13:00
  15. 14:00
  16. 15:00
  17. 16:00
  18. 17:00
  19. 18:00
  20. 19:00
  21. 20:00
  22. 21:00
  23. 22:00
  24. 23:00

Through the week

By weekday

  1. 0.1Mon
  2. 0Tue
  3. 0.2Wed
  4. 0Thu
  5. 0.1Fri
  6. 0Sat
  7. 0.1Sun

Fleet

Aircraft observed

  1. Airbus A320neoA20N11%
  2. P28A11%
  3. Pilatus PC-12PC1211%
  4. Embraer Phenom 300E55P7%
  5. PA247%
All the numbers in a table
MonthPer daySeenAirlines
January 2026Not seen in this month.
February 2026Not seen in this month.
March 202613–
    April 2026Not seen in this month.
    May 202612–
      June 202615–
        July 20261.510
        • Frontier Airlines3×
        August 2026Not seen in this month.
        September 202612–
          October 2025Not seen in this month.
          November 202512–
            December 202513
            • Frontier Airlines1×

            Airlines observed on this route

            From observed callsign routes on ISP-PHL - not a booking guarantee.

            Frontier Airlines

            F9 · FFT

            Hub: DEN Denver

            91 departure airportsView airline →

            About this route

            • Domestic route: both airports are in the same country.
            • Direct destinations observed from Islip: 29.
            • Direct destinations observed from Philadelphia: 139.

            The airports on this route

            Long Island MacArthur Airport

            Islip, United StatesISP / KISP

            Regional airport · 29 direct destinations · 3 runways · longest runway 7,005 ft

            66 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center

            Airport pageAll direct destinations

            Philadelphia International Airport

            Philadelphia, United StatesPHL / KPHL

            Major airport · 139 direct destinations · 4 runways · longest runway 12,001 ft

            66 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center

            Airport pageAll direct destinations

            Alternative airports for this journey

            Same journey, a different airport nearby - with an observed direct connection.

            HPN PHLWestchester County AirportWhite Plains is about 37 mi from Islip.View route →JFK PHLJohn F. Kennedy International AirportNew York is about 37 mi from Islip.View route →LGA PHLLaGuardia AirportNew York is about 40 mi from Islip.View route →TEB PHLTeterboro AirportTeterboro is about 50 mi from Islip.View route →

            About the route from Islip to Philadelphia

            The observed direct connection between Long Island MacArthur Airport (ISP) and Philadelphia International Airport (PHL) covers approximately 129 mi. The estimated flight time is around 45m. Frontier Airlines has been observed on this connection in the available route data.

            Frequently asked questions about this route

            How far is Islip from Philadelphia by air?
            The great-circle distance between Long Island MacArthur Airport and Philadelphia International Airport is approximately 129 mi.
            How long is the flight from Islip to Philadelphia?
            Based on the distance, the estimated flight time is about 45m. This is an estimate, not a schedule.
            Is there a direct connection from Islip to Philadelphia?
            Yes, a direct connection between ISP and PHL has been observed in our route data.
            Which airlines have been observed on this route?
            In the available route data: Frontier Airlines.
            How often is there a flight from Islip to Philadelphia?
            On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 27 observed flights. Mainly Frontier Airlines. That is an observation, not a timetable.
            What is the current time difference between Islip and Philadelphia?
            Same local time in Islip and Philadelphia.

            Where this data comes from

            The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.

            The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.

            Route data updated on October 11, 2026.