Services Are Offered at Allegiant Air Tri-Cities Airport (TRI) Terminal
| Ticket Booking and Cancellation | Baggage Allowance | Airport / Online / Self-service Check-in |
| Airport Transfers | Duty-Free Allowance | Unaccompanied Minor Service |
| In-Flight Meals / Entertainment | Airport Lounges | Missing / Delayed / Lost Luggage |
| Flight Information / Flight Status | Delayed / Canceled Flights | Airport Facilities |
| Animal Relief Area | Boarding Class Enquiries | Valet Parking |
| Airport / Inflight Wi-Fi | ConnectMiles | Star Alliance |
List of all Allegiant Air Terminals Worldwide
Map location of Allegiant Air Tri-Cities Airport (TRI) Terminal
