Which airlines fly to ISP?
5 airlines have inbound service to Islip in the current dataset.
Airlines
5 carriers
Domestic origins
9 airports
International origins
0 airports
Top origin countries serving ISP on this page
- US: 9 origin airport matches
Flight-number preview is shown for up to 8 routes per page.
Airlines flying to ISP
Southwest AirlinesSouthwest Airlines
Alaska AirlinesAlaska Airlines- Peninsula AirwaysPeninsula Airways
American AirlinesAmerican Airlines
Allegiant AirAllegiant Air
Origin airports
- United StatesBaltimore (BWI)
- United StatesBoston (BOS)
- United StatesFort Lauderdale (FLL)
- United StatesOrlando (MCO)
- United StatesPhiladelphia (PHL)
- United StatesPunta Gorda (PGD)
- United StatesTampa (TPA)
- United StatesWashington (DCA)
- United StatesWest Palm Beach (PBI)
Inbound route details
Origin-country mix in this list:US 10/10
- Baltimore (BWI) to Islip (ISP)
Airline:
Southwest AirlinesSouthwest AirlinesFlight numbers: WN937, WN966, WN523 - Boston (BOS) to Islip (ISP)
Airline:
Alaska AirlinesAlaska AirlinesFlight numbers: Unavailable for this route - Boston (BOS) to Islip (ISP)
Airline: Peninsula AirwaysPeninsula AirwaysFlight numbers: Unavailable for this route
- Fort Lauderdale (FLL) to Islip (ISP)
Airline:
Southwest AirlinesSouthwest AirlinesFlight numbers: Unavailable for this route - Orlando (MCO) to Islip (ISP)
Airline:
Southwest AirlinesSouthwest AirlinesFlight numbers: WN4544, WN862 - Philadelphia (PHL) to Islip (ISP)
Airline:
American AirlinesAmerican AirlinesFlight numbers: Unavailable for this route - Punta Gorda (PGD) to Islip (ISP)
Airline:
Allegiant AirAllegiant AirFlight numbers: Unavailable for this route - Tampa (TPA) to Islip (ISP)
Airline:
Southwest AirlinesSouthwest AirlinesFlight numbers: Unavailable for this route - Washington (DCA) to Islip (ISP)
Airline:
American AirlinesAmerican Airlines - West Palm Beach (PBI) to Islip (ISP)
Airline:
Southwest AirlinesSouthwest Airlines
Plan around ISP
Compare inbound and outbound coverage to evaluate connection opportunities, seasonal route depth, and airline mix before locking in your itinerary.
Frequently asked questions
How many origin airports connect to ISP?
On this page, 9 origin airports connect to ISP, including 9 domestic and 0 international origins.
How should I use this inbound route page for trip planning?
Use this page to identify feeder cities and airline options into one airport, then open city-pair route pages and map view to compare alternatives before booking.