| Airport Name | Long Island MacArthur Airport |
| Islip Airport Address | 100 Arrival Ave, Ronkonkoma, NY 11779, United States |
| Airport Code | ISP |
| Allegiant Air ISP Terminal | Terminal 1 |
| MacArthur Airport Contact No. | +16314673300 |
| Official Website | www.allegiantair.com |
| IATA Code | G4 |
| ICAO Code | AAY |
| Working Hours | 24 hours |
| Twitter Account | twitter.com/Allegiant |
| Facebook Page | www.facebook.com/Allegiant |
| YouTube Handle | www.youtube.com/c/allegiant |
| Instagram Account | www.instagram.com/allegiant |
| Flight Reservations | Flight Cancellations |
| Flight Delays | OKTB/Ok-to-Board |
| Economy Class | Meet & Greet Procedures |
| Facilities for Miles | Duty-free Baggage Allowance |
| Applying for Visas | Lounge Facilities |
| Baggage Services | Missed Baggage Services |
| Wi-Fi Services at Airports | Reserving Tickets |
| Economy Class | Services at the Airport |
| Check-in Procedures | Canceling Flights |
| Food Onboarding | Visa and Flight Information |
| Arrival Visa | Wi-Fi on Flights |
| Seat Upgradations | Counter Check-in |
| Business Class | Facilities for Immigration |
Terminal 1 at Long Island MacArthur Airport is used by Allegiant Air to manage its flight operations.
Terminal 1 at Long Island MacArthur Airport (ISP) is used by Allegiant Air flight arrivals.
Allegiant Air flights depart from Terminal 1 at Long Island MacArthur Airport.
Call Allegiant Air at +1 631-467-3300; visit the airline’s website to locate phone numbers for different regions.
Yes! Allegiant Air provides inflight internet/wifi service.
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